Electric field structure, filter element and air purifier

Abstract

The embodiment of the utility model provides an electric field structure, a filter element and an air purifier, the electric field structure comprises a plurality of liquid film plates and electrode plates which are arranged at intervals, the liquid film plates are parallel to the electrode plates, at least one side face of each liquid film plate can form a liquid film when fluid flows through, and at least one side face of each liquid film plate is parallel to the electrode plates. And air flow channels at equal intervals are formed between the electrode plates and the adjacent liquid films. According to the electric field structure disclosed by the embodiment of the invention, the air flow channels between the liquid film plate and the electrode plate are distributed at equal intervals, so that the electric field in an air circulation path is uniformly distributed, the acting force on charged particles flowing through the electrostatic field is more balanced, the removal effect of the electric field structure on impurities in the air is improved, and the impurities captured by a water film cannot be accumulated on the liquid film plate; not only is secondary flying avoided, but also self-cleaning of the electric field structure is realized.

Description

TECHNICAL FIELD

[0001] The embodiment of the present disclosure relates to the technical field of air purification, in particular to an electric field structure, a filter element and an air purifier. BACKGROUND

[0002] At present, electrostatic precipitation is commonly used in factories and power plants that use coal as fuel to collect coal ash and dust in flue gas. In metallurgy, it is used to collect oxides of tin, zinc, lead, aluminum, etc. There are also dust removal and sterilization products for home use. The electric field structure is a key technology in such methods, which determines the collection efficiency and operation and maintenance cost. The existing electric field structures are various, and different application scenarios have different electric field structure designs. For the electric field structure of flue dust removal, a liquid cleaning method is used, which is as follows:

[0003] A kind of electric field structure, filter element and air purifier are disclosed in Chinese patent with application number CN202221097577.5, comprising: liquid film assembly, two adjacent liquid film plates in liquid film assembly form air flow channel, conductive assembly is placed in air flow channel, air flow channel is honeycomb, the conductive column of conductive assembly is inserted into honeycomb, honeycomb is staggered, interval is not uniform, so that electric field distribution is uneven in the path of air flow, the force of different positions in the path on the particles in air is different, and the self-cleaning effect is also different, thereby reducing the convenience of filter element use. Practical new type content

[0004] The purpose of the embodiment of the present disclosure is to provide an electric field structure, a filter element and an air purifier, so as to solve the aforementioned problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the embodiment of the present disclosure is as follows:

[0006] The embodiment of the present disclosure provides an electric field structure, which comprises: a plurality of spaced liquid film plates and electrode plates, the liquid film plates and the electrode plates are parallel, at least one side of the liquid film plate can form a liquid film when fluid flows, and the electrode plate and the adjacent liquid film form an air flow channel with equal spacing.

[0007] For example, at least one side of the liquid film plate is uniformly provided with a plurality of longitudinal flow guide ribs, and a flow guide surface through which fluid flows is formed between two adjacent flow guide ribs. The flow guide surface is provided with a plurality of transverse extension ribs, the extension ribs are staggered along the length direction of the flow guide surface, and the extension ribs and the flow guide surface form a concave-convex alternating pattern. One end of the liquid film plate is provided with a liquid inlet groove, and a plurality of liquid outlets are uniformly arranged on the bottom of the liquid inlet groove at least one side of the liquid film plate. The liquid outlets correspond to the corresponding flow guide surfaces, and the liquid flows through the corresponding flow guide surfaces to form a liquid film through the liquid outlets.

[0008] Exemplarily, the depth of the liquid inlet groove along its length direction increases from both ends to the middle.

[0009] Exemplarily, the depth of the liquid inlet groove along its width direction increases from both sides to the central region.

[0010] Exemplarily, the liquid inlet groove is provided with an anti-overflow part at both ends along its length direction, and the anti-overflow parts of two adjacent liquid film plates are in contact to arrange the two adjacent liquid film plates at equal distances at one end.

[0011] Exemplarily, the anti-overflow part comprises a first joint plate and a second joint plate arranged at intervals, the top end of the first joint plate is connected with the second joint plate, and a liquid overflow port is arranged above the sidewall of the liquid inlet groove at the top end of the first joint plate; the second joint plate is arranged at the end of the liquid inlet groove, and the top end of the second joint plate is higher than the top end of the first joint plate, and a clamping part is formed between the two opposite second joint plates.

[0012] Exemplarily, the liquid film plate is provided with a first mounting part at both sides along the length direction, and the electrode plate is provided with a second mounting part at both sides along the length direction; the electric field structure further comprises two groups of connecting assemblies, each group of connecting assemblies connects the first mounting part at one side of the liquid film plate and the second mounting part of the electrode plate, so that the adjacent liquid film plates and electrode plates are arranged at equal distances at both sides.

[0013] Exemplarily, the first mounting part comprises a first mounting port arranged at the central region along the height direction of the liquid film plate and a second mounting port arranged at both sides of the first mounting port, and a spacer column is arranged at both sides of the second mounting port away from the liquid film plate; the second mounting part comprises a third mounting port; each group of connecting assemblies comprises three first connecting rods, a plurality of tube sleeves, and two second connecting members;

[0014] wherein one of the first connecting rods is sequentially arranged in the first mounting ports at the same side of each liquid film plate and the third mounting port of the electrode plate, the tube sleeve is sleeved on the first connecting rod arranged in the first mounting port and penetrates through the corresponding first mounting port, and the two ends of each tube sleeve are respectively in abutment with the edges of the third mounting port of the electrode plate, so that the two adjacent electrode plates are arranged at equal distances; the other two first connecting rods are sequentially arranged in the corresponding second mounting ports at the same side of each liquid film plate, and the spacer columns of the two adjacent liquid film plates are in contact, so that the two adjacent liquid film plates are arranged at equal distances; and the second connecting member comprises three connected mounting caps; and the two ends of each first connecting rod are respectively connected with the corresponding mounting cap.

[0015] Exemplarily, the liquid film plate is symmetrically and uniformly provided with a plurality of clamping protrusions on both sides of the end away from the liquid inlet groove, and a blind groove is formed in the central region of the clamping protrusions; the electric field structure further comprises a plurality of positioning strips, the positioning strips are symmetrically and uniformly provided with a plurality of positioning protrusions on both sides in the length direction, the positioning protrusions are inserted into the corresponding blind grooves, and a gap is left between the positioning strips and the liquid film plates on both sides, so that the fluid passes through.

[0016] Exemplarily, the electric field structure further comprises a liquid distribution assembly provided at the top end of each liquid film plate for providing fluid to each liquid film plate; the liquid distribution assembly comprises a liquid distribution plate provided at the top end of each liquid film plate and provided with a plurality of rows of through holes in the length direction thereof, each row of through holes is uniformly provided with a plurality of through holes in the width direction thereof, and each row of through holes corresponds to the top end of a corresponding liquid film plate; and a plurality of liquid inlet pipes are respectively provided on the side of the liquid distribution plate away from the liquid film plates, and each liquid inlet pipe is respectively provided with a plurality of liquid outlet heads penetrating through the corresponding through holes of the liquid distribution plate; the liquid film plate comprises a liquid inlet groove, and each row of through holes corresponds to the liquid inlet groove of a corresponding liquid film plate; and the liquid film plate comprises an anti-overflow part, and the liquid distribution plate is arranged on the clamping part.

[0017] Another aspect of the embodiments of the present disclosure provides a filter element comprising the electric field structure as described above.

[0018] Another aspect of the embodiments of the present disclosure provides an air purifier comprising the filter element as described above.

[0019] The embodiments of the present disclosure have the following beneficial effects:

[0020] The electric field structure of the embodiments of the present disclosure has the following beneficial effects: the electric field structure is simple in structure, the air flow channels with equal intervals are formed between the liquid film plates and the electrode plates, the electric field is uniformly distributed in the path of air flow, the effects on the charged particles in the flowing air are balanced, and the impurity purification effect on the air is better. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic diagram of an electric field structure assembled by the embodiments of the present disclosure;

[0022] Figure 2 is a side view of an electric field structure assembled by the embodiments of the present disclosure;

[0023] Figure 3 is a structure schematic diagram of a liquid film plate and an electrode plate in an electric field structure provided by the embodiments of the present disclosure;

[0024] Figure 4 is a front view of a liquid film plate in an electric field structure provided by the embodiments of the present disclosure;

[0025] Figure 5is a structural schematic diagram of a liquid inlet groove of a liquid film plate in an electric field structure provided by an embodiment of the present disclosure;

[0026] Figure 6 is a structural schematic diagram of an anti-overflow part of a liquid film plate in an electric field structure provided by an embodiment of the present disclosure;

[0027] Figure 7 is a structural schematic diagram of a bottom part of a liquid film plate in an electric field structure provided by an embodiment of the present disclosure;

[0028] Figure 8 is a structural schematic diagram of a partially disassembled electric field structure provided by an embodiment of the present disclosure;

[0029] Figure 9 is a structural schematic diagram of a partially disassembled connecting assembly of an electric field structure provided by an embodiment of the present disclosure;

[0030] Figure 10 is a structural schematic diagram of a partially disassembled positioning strip of an electric field structure provided by an embodiment of the present disclosure;

[0031] Figure 11 is a structural schematic diagram of a partially disassembled positioning strip of an electric field structure provided by an embodiment of the present disclosure;

[0032] Figure 12 is a structural schematic diagram of a partially disassembled liquid distribution assembly of an electric field structure provided by an embodiment of the present disclosure;

[0033] Figure 13 is a structural schematic diagram of a liquid distribution assembly in an electric field structure provided by an embodiment of the present disclosure.

[0034] In the drawings:

[0035] 100, liquid film plate; 110, flow guide rib; 120, flow guide surface; 121, extension rib; 130, liquid inlet groove; 131, liquid outlet; 132, positioning groove; 133, positioning clamping block; 140, anti-overflow part; 141, first combination plate; 142, liquid overflow outlet; 143, liquid discharge outlet; 144, second combination plate; 145, clamping part; 150, first mounting part; 151, first mounting outlet; 152, second mounting outlet; 153, spacing column; 160, blind groove; 161, clamping protrusion; 200, electrode plate; 210, second mounting part; 220, third mounting outlet; 300, liquid distribution assembly; 310, liquid distribution plate; 311, through hole; 320, liquid inlet pipeline; 321, liquid outlet end; 330, total liquid supply pipeline; 331, liquid inlet end; 400, connecting assembly; 410, first connecting rod; 420, pipe sleeve; 430, second connecting piece; 431, mounting cap; 432, cap block; 433, nut; 500, positioning strip; 510, positioning protrusion; 520, reinforcing rib; 530, gap. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the embodiments of the present disclosure are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are merely intended to explain the embodiments of the present disclosure and not to limit the embodiments of the present disclosure.

[0037] As shown in Figure 1 and Figure 2 , the present disclosure proposes an electric field structure in one aspect, which comprises: a plurality of spaced liquid film plates 100 and electrode plates 200, the liquid film plates 100 are parallel to the electrode plates 200, at least one side of the liquid film plate 100 can form a liquid film when the fluid flows through, and the electrode plate 200 and the adjacent liquid film form an equal-interval air flow channel and a uniform electrostatic field.

[0038] When the fluid flows through the surface of the liquid film plate continuously, a continuous liquid film can be formed on the surface of the liquid film plate; the liquid film is grounded, specifically, the fluid flows into a water collecting tank, the water collecting tank is grounded, and the electrode plate is connected with a high-voltage static power supply; when the electrode plate is electrified, an electrostatic field is formed between the electrode plate and the liquid film plate, so that the charged particles entering the electrostatic field move under the action of the electric field force and enter the liquid film. The electric field structure of the present disclosure is usually arranged as an assembly in a corresponding purification device, and is placed in a pipeline or environment to be purified. Before the air flows through the electric field structure, the particles and other pollutants in the air are charged. When the charged particles and other impurities flow through the electric field structure, they will move towards the liquid film plate under the action of the electric field force and enter the liquid film, thereby achieving the purpose of purifying the air. The pollutants entering the liquid film are almost not separated from the liquid due to the surface tension and viscosity of the liquid, avoiding the secondary flying of the pollutants and improving the collection efficiency of the electric field. In addition, the fluidity of the liquid film also prevents the pollutants in the liquid film from gathering on the surface of the liquid film plate, thereby realizing self-cleaning of the liquid film plate and ensuring that the electrostatic field can work for a long time without maintenance and without reducing the efficiency. The charging properties of the impurity particles in the air and the charging properties of the electrode plate can be set according to actual conditions.

[0039] The liquid film plate and the electrode plate of the present disclosure are both flat plate structures, and are arranged in a cross shape and parallel to each other at equal intervals, so that an equal-interval air flow channel is formed between the electrode plate and the liquid film. The equal-interval air flow channel makes the air flow more smoothly, the electrostatic field generated by the plane of the electrode plate has a large range and is uniform, the forces on the charged particles in the air at different positions of the air flow path are the same, thereby improving the particle capture effect and improving the filtering function of the filter element.

[0040] Preferably, the two side surfaces of the liquid film plate form liquid films when the fluid flows through, thereby increasing the number of liquid films and improving the filtering efficiency.

[0041] As shown in Figure 3and Figure 4 As shown, each liquid film plate 100 has at least one side uniformly provided with multiple longitudinal guide ribs 110, and a guide surface 120 for fluid flow is formed between two adjacent guide ribs 110. The guide surface 120 is provided with multiple transverse extension ribs 121, which are staggered along the length of the guide surface. The extension ribs 121 and the guide surface 120 form an alternating texture, so that the liquid can be fully extended on the guide surface. One end of the liquid film plate 100 is provided with a liquid inlet groove 130. The bottom of the liquid inlet groove 130 is located on at least one side of the liquid film plate 100 and multiple liquid outlets 131 are uniformly provided. The liquid outlets 131 correspond to the corresponding guide surfaces 120, and the liquid flows through each liquid outlet 131 and through the corresponding guide surfaces 120 to form a liquid film.

[0042] In this embodiment, multiple guide ribs are symmetrically and evenly arranged on both sides of each liquid film plate. The guide ribs are arranged along the height direction of the liquid film plate, i.e., longitudinally, and a guide surface is formed between two adjacent guide ribs on the same side. The bottom part of the liquid inlet tank is provided with multiple pairs of liquid outlets evenly arranged on both sides of the liquid film plate, and the liquid outlets correspond to the corresponding guide surfaces. Each guide surface is provided with extension ribs 121, and multiple extension ribs are staggered along the length direction of the guide surface, so that the liquid can be fully extended on the guide surface. The textured surface of the liquid film plate allows the fluid to be better extended into a water film.

[0043] like Figure 4 As shown, preferably, the depth of each liquid inlet trough 130 increases sequentially from both ends to the middle along its length.

[0044] In other words, the bottom surface of the liquid inlet tank is inclined from both ends toward the central area, and the bottom surfaces at both ends of the liquid inlet tank are higher than the central area, so that the liquid in the liquid inlet tank automatically flows toward the center, and that liquid can flow out from each liquid outlet 131.

[0045] The width of the liquid inlet groove is greater than the width of the liquid film plate. The liquid inlet groove is provided with a locking structure on both sides along its width direction so that two adjacent liquid film plates can be aligned and installed.

[0046] Specifically, each liquid inlet groove has a plurality of inwardly recessed positioning grooves 132 evenly arranged on the outer side of one of its two side walls along its width direction. The shape of the positioning grooves can be set according to the actual situation. In this embodiment, the positioning grooves are similar to a T-shape. The liquid inlet groove has a plurality of outwardly protruding positioning blocks 133 evenly arranged on the outer side of the other side wall along its width direction. The positioning blocks 133 match the shape of the positioning grooves 132. The positioning blocks on both sides of the liquid inlet groove are symmetrically arranged with the corresponding positioning grooves. During assembly, the positioning groove of any liquid film plate inlet groove engages with the corresponding block of the previous liquid film plate inlet groove, which facilitates installation and ensures that each liquid film plate is neatly assembled.

[0047] like Figures 5 to 7As shown, each liquid film plate 100 is provided with an anti-overflow part 140 at both ends along the length direction of the liquid inlet groove 130, and the anti-overflow parts 140 of two adjacent liquid film plates 100 are in contact to arrange the two adjacent liquid film plates 100 at equal intervals at one end.

[0048] The anti-overflow part is provided with an overflow port to discharge excess fluid when a large amount of fluid is injected into the liquid inlet groove. The anti-overflow parts of the adjacent liquid film plates are in contact, that is, the first joint plate and the second joint plate of the adjacent liquid film plates are respectively in contact, so that the liquid film plates are kept at equal intervals at the upper end.

[0049] As shown, Figure 6 The anti-overflow part 140 includes a first joint plate 141 and a second joint plate 144 arranged at intervals, the top end of the first joint plate 141 is connected to the second joint plate 144, and the top end of the first joint plate 141 is provided with an overflow port 142 above the side wall of the liquid inlet groove 130; the second joint plate 144 is arranged at the end of the liquid inlet groove 130, and the top end of the second joint plate 144 is higher than the top end of the first joint plate 141, and a clamping part 145 is formed between the two opposite second joint plates 144.

[0050] The top end of the first joint plate is provided with an overflow port above the side wall of the liquid inlet groove, and the bottom part of the overflow port is arranged as a drain port 143 on both sides of the liquid film plate. The overflow port allows excess fluid injected into the liquid inlet groove to be discharged through the overflow port, and the fluid discharged through the overflow port is discharged along the length direction of the liquid film plate. The first joint plate 141 and the second joint plate 144 form an assembly groove.

[0051] The anti-overflow part of the embodiment of the present disclosure has multiple functions. When a plurality of liquid film plates are assembled, firstly, the first joint plate and the second joint plate of two adjacent liquid film plates are respectively in contact to keep the liquid film plates at equal intervals, and at least ensure that the liquid film plates are at equal intervals at one end of the liquid inlet groove; secondly, when excess fluid is injected into the liquid inlet groove, the excess fluid can be discharged through the overflow port to avoid overflow from other positions; thirdly, after the connection of a plurality of liquid film plates, the clamping part is connected to form a clamping structure for mounting the liquid distribution assembly, so that the liquid distribution plate is stably arranged above the liquid inlet groove of the liquid film plate, and can be further fixed by bolts or the like.

[0052] As shown, Figure 3 and Figure 4 The liquid film plate 100 is provided with a first mounting part 150 at both sides along the length direction, and the electrode plate 200 is provided with a second mounting part 210 at both sides along the length direction.

[0053] As shown, Figure 8 and Figure 9As shown, the electric field structure further comprises two groups of connecting components 400, which are connected with the first mounting portions 150 on both sides of the liquid film plates 100 and the second mounting portions 210 on both sides of the electrode plates 200 respectively, so that the adjacent liquid film plates 100 and the electrode plates 200 are arranged at equal intervals, and the electrode plate 200 is located in the middle region between the adjacent two liquid film plates 100.

[0054] The second mounting portion is arranged in the central region of the electrode plate along the length direction, and the connecting component can not only connect the plurality of liquid film plates, but also maintain the equal interval arrangement of the liquid film plates, and the electrode plate is clamped in the central region between the adjacent two liquid film plates, so as to ensure that the air flow channel between the liquid films of the electrode plate is smooth when the air flows through the air flow channel, the charged particles are subjected to the same force at each position to enter the corresponding liquid film, and the effect of capturing impurities in the air is ensured.

[0055] As shown in Figures 4 to 6 The first mounting portion 150 comprises a first mounting port 151 arranged in the central region of the liquid film plate 100 along the height direction and a second mounting port 152 arranged on both sides of the first mounting port 151, and a spacing column 153 is arranged on both sides of the second mounting port 152 away from the liquid film plate 100. Figure 3 As shown in

[0056] As shown in Figure 9 and Figure 10 The spacing column 153 is integrally formed with the liquid film plate 100, and the connecting component comprises three first connecting rods 410, a plurality of tube sleeves 420 and two second connecting components 430. One of the first connecting rods 410 is sequentially arranged in the first mounting port 151 and the third mounting port 220 on the same side of each liquid film plate 100. The tube sleeve 420 is sleeved on the first connecting rod 410 arranged in the first mounting port 151 and penetrates through the corresponding first mounting port 151, and the two ends of each tube sleeve 420 are respectively abutted with the edges of the third mounting port 220 of the electrode plate 200, so that the adjacent two electrode plates 200 are arranged at equal intervals. The other two first connecting rods 410 are sequentially arranged in the corresponding second mounting ports 152 on the same side of each liquid film plate 100, and the spacing columns 153 of the adjacent two liquid film plates 100 are in contact, so that the adjacent two liquid film plates 100 are arranged at equal intervals. The second connecting component 430 comprises three connected mounting caps 431, and the two ends of each first connecting rod 410 are respectively connected with the corresponding mounting cap 431.

[0057] That is, one of the first connecting rods is sequentially arranged in the first mounting port of each liquid film plate and the third mounting port of the electrode plate, and the other two first connecting rods are sequentially arranged in the corresponding second mounting ports on the same side of each liquid film plate, so that the two adjacent liquid film plates are arranged at equal intervals, and the electrode plate arranged between the two liquid film plates is also arranged at equal intervals. Since the two sides of the second mounting port are arranged on the spacing columns, after the liquid film plates are connected by the first connecting rod, the two adjacent spacing columns are connected to ensure that the two adjacent liquid film plates are arranged at equal intervals. The pipe sleeve is arranged on the first connecting rod and penetrates the first mounting port, and the two ends abut against the edge of the third mounting port of the adjacent electrode plate, so that the electrode plates are arranged at equal intervals. In this way, the liquid film plates and the electrode plates of the entire electric field structure are arranged uniformly and orderly, and the assembly is simple and convenient.

[0058] As shown in Figure 9 , the second connecting piece 430 further comprises a cap block 432 arranged in the mounting cap 431 and a nut 433 arranged in the cap block 432, and the two ends of the connecting rod are respectively provided with threads connected with the nut 433.

[0059] The first connecting rod and the second connecting piece can be detachably connected through threads and nuts.

[0060] As shown in Figure 10 and Figure 11 , the liquid film plate 100 is symmetrically and uniformly provided with a plurality of clamping protrusions 161 on both sides of one end away from the liquid inlet groove 130, and a blind groove 160 is formed in the central region of the clamping protrusion 161; the electric field structure further comprises a plurality of positioning strips 500, the positioning strips 500 are symmetrically and uniformly provided with a plurality of positioning protrusions 510 on both sides along the length direction, the positioning protrusions 510 are inserted into the corresponding blind grooves 160, and the positioning strips 500 and the liquid film plates 100 on both sides are left with gaps 530 for fluid to pass through.

[0061] The positioning strip is a long strip structure with a length matching the length of the liquid film plate, and the positioning strip ensures that the bottom ends of the liquid film plates are arranged at equal intervals. The positioning strip and the liquid film plates on both sides are left with a gap of 2mm-3mm, which is beneficial for the fluid left by the liquid film plates to flow out of the gap. The positioning strip is high in the middle and low at both ends, and can also prevent liquid from collecting on the upper surface of the positioning strip. A plurality of reinforcing ribs are arranged at intervals at the bottom of the positioning strip to ensure the structural strength of the positioning strip.

[0062] As shown in Figure 12 and Figure 13As shown, the electric field structure comprises: a liquid distribution assembly 300 arranged at one end of each liquid film plate 100 for providing fluid to each liquid film plate 100; the liquid distribution assembly 300 comprises: a liquid distribution plate 310 arranged at one end of each liquid film plate 100, and a plurality of rows of through holes 311 are arranged along the length direction of the liquid distribution plate 310, each row of through holes 311 is uniformly provided with a plurality of through holes along the width direction, and each row of through holes 311 corresponds to one end of the corresponding liquid film plate 100; a plurality of liquid inlet pipes 320 are arranged on the side of the liquid distribution plate 310 away from the liquid film plate 100, and each liquid inlet pipe 320 is provided with a plurality of liquid outlet heads 321, and the liquid outlet heads 321 pass through the corresponding through holes 311 of the liquid distribution plate 310; the liquid film plate 100 comprises: a liquid inlet groove 130, and each row of through holes 311 corresponds to the liquid inlet groove 130 of the corresponding liquid film plate 100; when the liquid film plate 100 comprises: an anti-overflow part 140, the liquid distribution plate 310 is arranged on the clamping part 145.

[0063] The liquid distribution assembly provides dispersed and uniform fluid for each liquid film plate, which facilitates the formation of a liquid film on the surface of the liquid film plate. The fluid is dispersed by the liquid distribution assembly and flows through the surface of the liquid film plate to form a continuous liquid film. The liquid distribution plate is arranged on the clamping part. The liquid outlet openings of the liquid outlet heads of the liquid inlet pipes are uniformly distributed above the liquid inlet grooves of the liquid film plates. The plurality of liquid inlet pipes can be arranged according to actual conditions.

[0064] Each row of through holes of the liquid distribution plate corresponds to the liquid inlet groove of the corresponding liquid film plate, and the through holes in each row are uniformly distributed above the liquid inlet groove of the corresponding liquid film plate, so that the liquid outlet heads of the water inlet pipes are uniformly distributed above the liquid inlet groove of the corresponding liquid film plate, which facilitates the uniform entry of liquid into the liquid film plate and the formation of a uniform liquid film on the surface of the liquid film plate.

[0065] Preferably, each water inlet pipe is arranged along the length direction of the liquid distribution plate.

[0066] In this way, fewer water inlet pipes can be arranged, and the plurality of water inlet pipes are connected to a total liquid inlet pipe 330, the total liquid inlet pipe 330 is provided with a plurality of liquid inlet heads 331, the liquid inlet heads 331 are connected to the corresponding water inlet pipes, and the total liquid inlet pipe can be connected to the liquid inlet pipe 320 by a water pump.

[0067] In another aspect, the disclosure provides a filter element comprising the electric field structure as described above.

[0068] In another aspect, the disclosure provides an air purifier comprising a water tank and a filter element as described above.

[0069] The above merely describes preferred embodiments of the present disclosure, and it should be noted that, for those of ordinary skill in the art, without departing from the principles of the present disclosure, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the present disclosure.

Claims

1. An electric field structure, characterized by, The electric field structure comprises: A plurality of spaced liquid film plates (100) and electrode plates (200), the liquid film plates (100) are parallel to the electrode plates (200), at least one side of the liquid film plates (100) can form a liquid film when fluid flows, and the electrode plates (200) and adjacent liquid films form equidistant air flow channels; At least one side of the liquid film plate (100) is uniformly provided with a plurality of longitudinal guide ribs (110), and a flow guide surface (120) through which fluid flows is formed between two adjacent guide ribs (110), the flow guide surface is provided with a plurality of transverse extension ribs (121), the extension ribs (121) are staggered along the length direction of the flow guide surface, and the extension ribs and the flow guide surface form convex-concave alternating lines; One end of the liquid film plate (100) is provided with a liquid inlet groove (130), a plurality of liquid outlets (131) are uniformly arranged on the bottom of the liquid inlet groove (130) at least on one side of the liquid film plate (100), the liquid outlets (131) correspond to the corresponding flow guide surfaces (120), and liquid flows through the corresponding flow guide surfaces (120) to form a liquid film through the liquid outlets (131).

2. The electric field structure of claim 1, wherein The liquid inlet groove (130) is provided with a spill-proof part (140) at both ends along the length direction thereof, the spill-proof parts (140) of two adjacent liquid film plates (100) are in contact, so that the two adjacent liquid film plates (100) are equidistantly arranged at one end.

3. The electric field structure of claim 2, wherein, The spill-proof part (140) comprises: a first combination plate (141) and a second combination plate (144) arranged at intervals, the top end of the first combination plate (141) is connected with the second combination plate (144), and a liquid overflow port (142) is arranged above the side wall of the liquid inlet groove (130) at the top end of the first combination plate (141); The second combination plate (144) is arranged at the end of the liquid inlet groove (130), the top end of the second combination plate (144) is higher than the top end of the first combination plate (141), and a clamping part (145) is formed between two opposite second combination plates (144).

4. The electric field structure according to any one of claims 1 to 3, characterized in that The liquid film plate (100) is respectively provided with a first mounting part (150) at both sides along the length direction, and the electrode plate (200) is provided with a second mounting part (210) at both sides along the length direction. The electric field structure further comprises: two groups of connecting assemblies (400), each group of connecting assemblies (400) connects the first mounting part (150) on one side of the liquid film plate (100) and the second mounting part (210) of the electrode plate (200), so that the adjacent liquid film plates (100) and electrode plates (200) are equidistantly arranged at both sides.

5. The electric field structure of claim 4, wherein, The first mounting part (150) comprises: a first mounting port (151) arranged in the central region of the height direction of the liquid film plate (100) and a second mounting port (152) separately arranged at both sides of the first mounting port (151), and a spacing column (153) is arranged on the side away from the liquid film plate (100) at both sides of the second mounting port (152); and the second mounting part (210) comprises: a third mounting port (220). Each of the connection assemblies (400) comprises three first connecting rods (410), a plurality of sleeves (420), and two second connecting rods (430); One of the first connecting rods (410) is sequentially arranged in the first mounting hole (151) on the same side of each liquid film plate (100) and the third mounting hole (220) of the electrode plate (200), the sleeve (420) is arranged on the first connecting rod (410) arranged in the first mounting hole (151) and penetrates through the corresponding first mounting hole (151), and the two ends of each sleeve (420) are respectively in abutment with the edges of the third mounting hole (220) of the electrode plate (200), so that the adjacent two electrode plates (200) are arranged at equal intervals; The other two first connecting rods (410) are sequentially arranged in the corresponding second mounting holes (152) on the same side of each liquid film plate (100), and the spacer columns (153) of the adjacent two liquid film plates (100) are in contact, so that the adjacent two liquid film plates (100) are arranged at equal intervals; The second connecting rod (430) comprises three connected mounting caps (431); The two ends of each first connecting rod (410) are respectively connected to the corresponding mounting cap (431).

6. The electric field structure according to any one of claims 1 to 3, characterized in that The liquid film plate (100) is symmetrically and uniformly provided with a plurality of clamping protrusions on both sides of the end away from the liquid inlet groove (130), and a blind groove (160) is formed in the central region of the clamping protrusion. The electric field structure further comprises a plurality of positioning strips (500), the positioning strips (500) are symmetrically and uniformly provided with a plurality of positioning protrusions (510) on both sides in the length direction, the positioning protrusions (510) are inserted into the corresponding blind grooves (160), and a gap is left between the positioning strips (500) and the liquid film plates (100) on both sides, so that the fluid can pass through.

7. The electric field structure of claim 3, wherein, The electric field structure further comprises a liquid distribution assembly (300) arranged at the top end of each liquid film plate (100) for providing fluid to each liquid film plate (100). The liquid distribution assembly (300) comprises a liquid distribution plate (310) arranged at the top end of each liquid film plate (100) and provided with a plurality of rows of through holes (311) in the length direction, each row of through holes (311) is uniformly provided with a plurality of through holes (311) in the width direction, and each row of through holes (311) corresponds to the top end of the corresponding liquid film plate (100). A plurality of liquid inlet pipes (320) are arranged on the side of the liquid distribution plate (310) away from the liquid film plate (100), and each liquid inlet pipe (320) is provided with a plurality of liquid outlet heads (321), and the liquid outlet heads (321) penetrate through the corresponding through holes (311) of the liquid distribution plate (310). When the liquid film plate (100) comprises a liquid inlet groove (130), each row of through holes (311) corresponds to the liquid inlet groove (130) of the corresponding liquid film plate (100). When the liquid film plate (100) comprises an anti-overflow part (140), the liquid distribution plate (310) is arranged on the clamping part (145).

8. A filter cartridge, characterized by The electric field structure comprises the water tank and the filter core.

9. An air cleaner characterized by comprising: The filter core comprises the water tank and the filter core.

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