Fiber mesh cloth, filter screen and humidifier

Abstract

The utility model provides fiber mesh cloth, a filter screen and a humidifier. The first surface layer and the second surface layer are woven fabrics, are connected through connecting fibers and are separated from each other. The first surface layer and the second surface layer are used for storing water instead of connecting fibers for storing water. The hydrophilicity of the first surface layer or the second surface layer is larger than that of the connecting fibers, and the water storage capacity of the first surface layer and the second surface layer is improved. The plurality of first openings of the first surface layer correspond to the plurality of second openings of the second surface layer, and the edge parts of the first openings are connected with the edge parts of the second openings through the connecting fibers, so that the ventilation resistance can be reduced. When air blows over the wetted fiber mesh cloth, the gas-liquid contact area between the air and the first surface layer and the second surface layer is large, the contact area between the air and the connecting fibers is small, and moisture in the fiber mesh cloth is easy to gasify, so that a large humidification amount is generated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of humidifiers, and particularly relates to a fiber mesh cloth, a filter screen and a humidifier. BACKGROUND

[0002] The current evaporative humidifier comprises a water tank, a water pump, a filter screen and a fan. The water pump extracts water in the water tank to wet the filter screen. The airflow generated by the fan passes through the filter screen, so that the water on the filter screen evaporates and is blown out with the airflow, realizing air humidification. The filter screen can be made of a mesh cloth, which plays a role in water storage. How to provide a fiber mesh cloth with strong water storage capacity and good hydrophilicity is a problem that the industry needs to face. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide a fiber mesh cloth, a filter screen and a humidifier, which has strong water storage capacity and good hydrophilicity.

[0004] The embodiment of the application provides a fiber mesh cloth, which comprises a first surface layer, a second surface layer and connecting fibers. The first surface layer and the second surface layer are woven fabrics of weft threads, and the weft threads have a plurality of first fiber filaments. The first surface layer and the second surface layer are arranged at intervals, the first surface layer has a plurality of first openings, and the second surface layer has a plurality of second openings. The plurality of first openings and the plurality of second openings correspond to each other. The edge part of the first opening and the edge part of the second opening corresponding to the first opening are connected by the connecting fibers. The hydrophilicity of the first surface layer or the second surface layer is greater than that of the connecting fibers.

[0005] In an optional implementation, the edge part of the first opening has a plurality of first mesh holes, the edge part of the second opening has a plurality of second mesh holes, and two connecting fibers extend from at least one first mesh hole to the second mesh hole, so that the edge part of the first opening and the edge part of the second opening are connected.

[0006] In an optional implementation, the number of the first mesh holes in the edge part of the first opening ranges from 8 to 40, and the number of the second mesh holes in the edge part of the second opening ranges from 8 to 40.

[0007] In an optional implementation, the connecting fiber is a single second fiber filament, and the diameter of the second fiber filament ranges from 20 microns to 120 microns.

[0008] In an optional implementation, the connecting fiber is a synthetic fiber, a natural fiber or a regenerated fiber.

[0009] In an optional implementation, the connecting fiber has an antibacterial layer.

[0010] In an optional implementation, the first fiber yarn is at least one of a synthetic fiber, a natural fiber, and a regenerated fiber;

[0011] In an optional implementation, at least part of the surface of the first fiber yarn has a water storage groove;

[0012] In an optional implementation, the cross section of at least part of the first fiber yarn is a cross shape, a multi-leaf shape, a polygonal shape, a W shape, or a U shape;

[0013] In an optional implementation, the weaving thread has a hydrophilic layer;

[0014] In an optional implementation, the weaving thread has an antibacterial layer;

[0015] In an optional implementation, in the same weaving thread, the cross section of one part of the first fiber yarn and the cross section of another part of the first fiber yarn are different in shape;

[0016] In an optional implementation, the weight range of the weaving thread is [30 grams, 300 grams] in 9000 meters, and the number of the first fiber yarns in the same weaving thread ranges from [18 to 500];

[0017] In an optional implementation, the surface of the first surface layer is provided with a first concave-convex hydrophobic layer;

[0018] In an optional implementation, the surface of the second surface layer is provided with a second concave-convex hydrophobic layer;

[0019] In an optional implementation, the fiber mesh cloth is a double-layer woven structure, the warp density ranges from [16 to 50 per inch], and the weft density ranges from [14 to 45 per inch];

[0020] In an optional implementation, the first opening is non-circular;

[0021] In an optional implementation, the second opening is non-circular.

[0022] In an optional implementation, the thickness of the fiber mesh cloth ranges from [3 to 20 millimeters];

[0023] In an optional implementation, the grammage of the fiber mesh cloth ranges from [80 to 1500 grams per square meter];

[0024] In an optional implementation, the water holding capacity per unit weight of the fiber mesh cloth ranges from [1 to 5 grams per gram];

[0025] In an optional implementation, the first opening or the second opening is a hexagon, a length of a long diagonal of the hexagon ranges from 3mm to 6mm, and a length of a short diagonal of the hexagon ranges from 2mm to 5mm.

[0026] In an optional implementation, the first opening or the second opening is a hexagon, a length of a long diagonal of the hexagon ranges from 3mm to 6mm, and a length of a short diagonal of the hexagon ranges from 2mm to 5mm.

[0027] In an optional implementation, the first opening or the second opening is a hexagon, a length of a long diagonal of the hexagon ranges from 3mm to 6mm, and a length of a short diagonal of the hexagon ranges from 2mm to 5mm.

[0028] The fiber mesh cloth provided by the embodiments of the present application has the following advantages: the first surface layer and the second surface layer are woven fabrics of threads, and the two are connected and kept apart by connecting fibers. Water is stored in the first surface layer and the second surface layer rather than in the connecting fibers. The hydrophilicity of the first surface layer or the second surface layer is greater than that of the connecting fibers, thereby improving the water storage capacity of the first surface layer and the second surface layer. The plurality of first openings of the first surface layer and the plurality of second openings of the second surface layer correspond to each other, and the edge portions of the first openings and the edge portions of the second openings are connected by connecting fibers, thereby reducing the ventilation resistance. When air blows through the wetted fiber mesh cloth, the air has more gas-liquid contact area with the first surface layer and the second surface layer and less contact with the connecting fibers, and the moisture in the fiber mesh cloth is easily vaporized to generate a larger humidification amount.

[0029] The embodiments of the present application provide a filter screen, which includes one of the above fiber mesh cloths or a plurality of the above fiber mesh cloths stacked and distributed.

[0030] The embodiments of the present application provide a humidifier, which includes the above filter screen.

[0031] The filter screen and the humidifier provided by the embodiments of the present application have the following advantages: the filter screen with the above fiber mesh cloth and the humidifier with the above filter screen both have the effects of the above fiber mesh cloth. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0033] Figure 1 The structure diagram of the fiber mesh cloth provided by the embodiments of the present application is shown in the figure, only part of the connecting fibers is shown.

[0034] Figure 2 for Figure 1 A partial structural diagram of the fiber mesh fabric, showing only some of the connecting fibers;

[0035] Figure 3 (a) and (b) are cross-sectional views of the yarns in the fiber mesh provided in different embodiments of this application, respectively.

[0036] Figure 4 (a) to (d) are cross-sectional views of the connecting fibers in the fiber mesh provided in different embodiments of this application, respectively;

[0037] Figure 5 This is a schematic diagram showing the connection between the first surface layer, the second surface layer, and the connecting fibers in the fiber mesh provided in the embodiments of this application.

[0038] Figure 6 (a) and (b) in the figure are schematic diagrams of the structure of the first surface layer in the fiber mesh provided in different embodiments of this application;

[0039] Figure 7 This is a schematic diagram of the structure of the filter provided in an embodiment of this application.

[0040] The following are the labeling elements in the figure:

[0041] 100-fiber mesh fabric;

[0042] 10 - First surface layer; 11 - First opening; 12 - Edge of the first opening; 13 - First mesh;

[0043] 20 - Second surface layer; 21 - Second opening; 22 - Edge of the second opening; 23 - Second mesh;

[0044] 30 - Weaving thread; 31, 31a, 31b - First fiber filament; 32 - Water storage groove; 40 - Connecting fiber;

[0045] 200-Filter. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0047] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0048] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0049] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] A mesh cloth in the related art can be used as a filter screen of an evaporative humidifier to store water. The mesh cloth includes a first face layer, a second face layer, and connecting fibers. The first face layer and the second face layer are arranged at intervals, the first face layer has a plurality of first openings, and the second face layer has a plurality of second openings. The first openings and the second openings are arranged correspondingly. The edge portion of the first opening has a plurality of first mesh holes, and the edge portion of the second opening has a plurality of second mesh holes. The first face layer and the second face layer are connected by a plurality of connecting fibers, and the connecting fibers pass through the plurality of first mesh holes and the plurality of second mesh holes. The effect of capillary water storage is achieved through the gap of the connecting fibers, rather than through the first face layer and the second face layer.

[0051] In order to improve the water storage capacity of the mesh cloth in the related art, there need to be four or more connecting fibers between the corresponding first mesh holes and the second mesh holes, and the wire diameter and the gap of the connecting fibers need to be controlled. The connecting fibers need to be arranged in a curved manner between the first face layer and the second face layer to improve the distribution density of the connecting fibers.

[0052] The smaller the opening of the surface layer is, the easier the water film is formed at the opening position after the mesh fabric is wetted. The ventilation resistance of the mesh fabric is increased after the water film is formed, and the ventilation and humidification are reduced. In order to prevent the mesh fabric from easily forming the water film, the maximum diagonal length of the opening of the surface layer is set to be large.

[0053] However, in the mesh fabric of the related art, the curved connecting fibers are arranged at a high density, and the connecting fibers are curved and filled towards the vertical holes between the first openings and the second openings. The connecting fibers curved into the vertical holes reduce the porosity of the three-dimensional structure in the vertical holes. After the mesh fabric is wetted, many small water films are easily formed, and the ventilation resistance of the mesh fabric is increased. Even if the maximum diagonal length of the opening of the surface layer is greater than 3 mm, the problem of the mesh fabric forming many water films cannot be effectively overcome.

[0054] The greater the maximum diagonal length of the opening of the surface layer is, the more difficult the hardness of the mesh fabric is to control. When the maximum diagonal length of the opening of the surface layer is greater than 3 mm, the connecting fibers are arranged in a curved manner and have low stiffness. After the mesh fabric is pulled and stretched during disassembly and cleaning, the curvature and inclination of the connecting fibers are increased. The size and shape of the opening of the surface layer mainly depend on the stiffness of the connecting fibers. After the connecting fibers are curved, the first openings of the first surface layer and the second openings of the second surface layer will be misaligned, and the mesh fabric has poor recovery effect.

[0055] Please refer to Figure 1 and Figure 2 , the embodiment of the present application provides a fiber mesh fabric 100, comprising: a first surface layer 10, a second surface layer 20 and a connecting fiber 40. In combination with Figure 3 , the first surface layer 10 and the second surface layer 20 are fabrics of weaves 30, and the weaves 30 have a plurality of first fiber filaments 31. Please refer to Figure 1 , the first surface layer 10 and the second surface layer 20 are arranged at intervals, the first surface layer 10 has a plurality of first openings 11, and the second surface layer 20 has a plurality of second openings 21. The plurality of first openings 11 and the plurality of second openings 21 correspond to each other. The edge part 12 of the first opening 11 and the edge part 22 of the second opening 21 corresponding to the first opening 11 are connected by the connecting fiber 40. The hydrophilicity of the first surface layer 10 or the second surface layer 20 is greater than the hydrophilicity of the connecting fiber 40.

[0056] Among them, the weaves 30 can be formed by interweaving a plurality of first fiber filaments 31.

[0057] Please refer to Figure 1 , the plurality of first openings 11 and the plurality of second openings 21 correspond to each other, which can be one-to-one correspondence and communication between the first openings 11 and the second openings 21.

[0058] The edge portion 12 of the first opening 11 refers to an edge region surrounding the first opening 11. Among the plurality of first openings 11 of the first face layer 10, two adjacent first openings 11 can have a portion of common edge. The edge portion 22 of the second opening 21 is similar.

[0059] The hydrophilicity refers to water retention or water absorption. The hydrophilicity of the first face layer 10 or the second face layer 20 is greater than that of the connecting fiber 40, so that the water storage capacity of the first face layer 10 or the second face layer 20 is stronger.

[0060] The fiber mesh cloth 100 provided by the embodiments of the present application is that the first face layer 10 and the second face layer 20 are fabrics of the woven threads 30, and the two are connected and kept apart by the connecting fibers 40. Water is stored in the first face layer 10 and the second face layer 20 rather than the connecting fibers 40. The hydrophilicity of the first face layer 10 or the second face layer 20 is greater than that of the connecting fiber 40, so that the water storage capacity of the first face layer 10 and the second face layer 20 is stronger. The plurality of first openings 11 of the first face layer 10 and the plurality of second openings 21 of the second face layer 20 correspond, and the edge portion 12 of the first opening 11 and the edge portion 22 of the second opening 21 are connected by the connecting fiber 40, which can reduce the ventilation resistance. When air blows through the wetted fiber mesh cloth 100, the air has more gas-liquid contact area with the first face layer 10 and the second face layer 20, and less contact with the connecting fiber 40, so that the moisture 1 in the fiber mesh cloth 100 is easily vaporized to generate a larger humidification amount.

[0061] In some embodiments, referring to Figure 3 , the first fiber filaments 31 are at least one of synthetic fibers, natural fibers, and regenerated fibers. These fiber filaments can be synthesized to form the woven threads 30, and the woven threads 30 can be woven to form the first face layer 10 and the second face layer 20. The synthetic fibers can be polyester, nylon, acrylic, polypropylene, vinylon, and chlorofiber. The natural fibers can be cotton yarn, wool, silk, and hemp. The regenerated fibers can be lyocell fiber and chitosan fiber.

[0062] In some embodiments, referring to Figure 3 , at least part of the surfaces of the first fiber filaments 31 have water storage grooves 32, which can store more moisture 1. This is conducive to improving the water storage capacity of the first face layer 10 and the second face layer 20.

[0063] For example, as shown in (a) of Figure 3 , a part of the first fiber filaments 31a have water storage grooves 32, and another part of the first fiber filaments 31b do not have water storage grooves 32,

[0064] For example, as shown in (b) of Figure 3 , all of the first fiber filaments 31a have water storage grooves 32.

[0065] In some embodiments, referring to (a) to (d) in Figure 4 The cross section of at least part of the first fiber yarn 31 can be shaped to form the water storage groove 32, such as a cross shape, a multi-leaf shape, a polygonal shape, a W shape or a U shape, etc. The multi-leaf shape can be a tri-leaf shape, similar to three leaves distributed in a Y shape. Each side of the polygonal shape can be concave to form the water storage groove 32. The polygonal shape can be a triangle, a quadrilateral, a pentagon, etc. The first fiber yarn 31 with the above cross section can form the water storage groove 32, and water can be kept in the water storage groove 32, in combination with Figure 1 , improving the water storage capacity of the first surface layer 10 and the second surface layer 20.

[0066] In some embodiments, the weaving thread 30 has a hydrophilic layer (not shown in the figure), and the hydrophilic layer of the weaving thread 30 makes the fiber mesh fabric 100 have better hydrophilicity.

[0067] In some embodiments, the hydrophilic layer of the weaving thread 30 can be provided on the outer surface of the first fiber yarn 31. During the synthesis of the first fiber yarn 31 into the weaving thread 30, a polymer with a hydrophilic group, such as polybutyl acrylate, methyl methacrylate, etc., is blended and added to graft and modify the molecular chain of the first fiber yarn 31, improving the hydrophilicity of the weaving thread 30 and being conducive to long-term maintenance of the water storage capacity of the first surface layer 10 and the second surface layer 20.

[0068] Compared with the use of post-coating hydrophilic oil to achieve moisture absorption in the mesh fabric, the hydrophilic oil will desorb and the hydrophilic effect will decrease after long-term use and multiple washes. In the present embodiment, the hydrophilic layer is formed on the outer surface of the first fiber yarn 31 when the weaving thread 30 is made. Under the conditions of external force (such as rubbing and washing), additional material cleaning (such as citric acid and dishwashing liquid), high temperature (such as water bath above 60°C), etc., the fiber mesh fabric 100 can also maintain long-term and stable hydrophilic effect, meeting the needs of long-term use.

[0069] In some embodiments, the weaving thread 30 has an antibacterial layer (not shown in the figure). The antibacterial layer of the weaving thread 30 makes the fiber mesh fabric 100 resistant to bacteria and mold.

[0070] In some embodiments, the antibacterial layer of the weaving thread 30 can be provided on the outer surface of the first fiber yarn 31. During the synthesis of the first fiber yarn 31 into the weaving thread 30, an antibacterial agent can be blended and added, which can be inorganic, organic, natural extract, etc. such as copper, zinc, graphene, phenol, plant extract organic acid, etc. These antibacterial agents can be embedded in the weaving thread 30.

[0071] Compared with the antibacterial cloth adopting the post-coating antibacterial oil agent (such as quaternary ammonium salt) to achieve antibacterial, the antibacterial oil agent will be detached after long-term use and multiple cleaning, and the antibacterial effect will be reduced. In this embodiment, the antibacterial layer is formed on the outer surface of the first fiber yarn 31 when the weaving yarn 30 is made, which can reduce the post-coating process. Under the conditions of external force (such as rubbing and washing), external material cleaning (such as citric acid, detergent, etc.), high temperature (such as water bath above 60℃), the fiber cloth 100 can maintain long-term stable antibacterial and mildew-proof effect, and meet the needs of long-term use.

[0072] For example, the antibacterial fiber yarn is embedded into the first fiber yarn 31, the first fiber yarn 31 and the antibacterial fiber yarn are interwoven to form the weaving yarn 30, and the antibacterial fiber yarn part serves as the antibacterial layer. There is no need to coat the antibacterial oil agent on the fiber cloth 100.

[0073] In some embodiments, referring to Figure 2 、 Figure 5 , the edge part 12 of the first opening 11 has a plurality of first mesh holes 13, the edge part 22 of the second opening 21 has a plurality of second mesh holes 23, and the two connecting fibers 40 extend from at least one first mesh hole 13 to the second mesh hole 23 to connect the edge part 12 of the first opening 11 and the edge part 22 of the second opening 21.

[0074] The plurality of first mesh holes 13 can be arranged in sequence along the edge part 12 of the first opening 11, and the plurality of second mesh holes 23 can be arranged in sequence along the edge part 22 of the second opening 21. In vision, the single first mesh hole 13 extends out two connecting fibers 40 to the second mesh hole 23, and in fact, the same connecting fiber 40 goes in and out through the single first mesh hole 13.

[0075] The connecting fiber 40 adopts the in-and-out (straight-in and straight-out) mode to pass through the first mesh hole 13 and the second mesh hole 23, and the connecting fiber 40 only passes through once for a single first mesh hole 13 or a second mesh hole 23, which reduces the number of times of the connecting fiber 40 passing through the first mesh hole 13 and the second mesh hole 23, and has a simple structure and is easy to make. The connecting fiber 40 can realize reliable connection and spacing between the first surface layer 10 and the second surface layer 20. The fiber cloth 100 has fewer processes and higher processing efficiency. The two connecting fibers 40 extend from the first mesh hole 13 to the second mesh hole 23, and the air resistance through the area between the first surface layer 10 and the second surface layer 20 is smaller, which reduces the ventilation resistance and increases the ventilation efficiency. It is easy to control the hardness of the connecting fiber 40 to control the deformation amount of the first opening 11 and the second opening 21, that is, the size of the overlapping part of the first opening 11 and the second opening 21.

[0076] In the process of making the fiber cloth 100, the first surface layer 10, the second surface layer 20 and the connecting fiber 40 are made synchronously, and can be made by using conventional cloth process.

[0077] For example, referring to Figure 2 , the edge portion 12 of the first opening 11 has a plurality of first meshes 13 arranged in sequence, the edge portion 22 of the second opening 21 has a plurality of second meshes 23 arranged in sequence, the first opening 11 and the second opening 21 are communicated, and the edge portion 12 of the first opening 11 corresponds to the edge portion 22 of the second opening 21. The connecting fiber 40 can alternately pass through different first meshes 13 and second meshes 23 in sequence according to the extension direction of the edge portion, that is, the connecting fiber 40 passes through a first mesh 13, a second mesh 23, a next first mesh 13, a next second mesh 23, and so on, to realize the connection between the first surface layer 10 and the second surface layer 20.

[0078] For example, when the connecting fiber 40 passes through part of the first meshes 13 or part of the second meshes 23, the connecting fiber 40 can first skip one or two first meshes 13 or second meshes 23 and pass through the first meshes 13 or second meshes 23 at the rear position, and then return to pass through the first meshes 13 or second meshes 23 that were skipped before, so that the connecting fiber 40 does not pass through the first meshes 13 and second meshes 23 in strict sequence to realize the connection between the first surface layer 10 and the second surface layer 20.

[0079] In some embodiments, referring to Figure 1 , Figure 2 , the number of first meshes 13 possessed by the edge portion 12 of the first opening 11 ranges from 8 to 40. The number of second meshes 23 possessed by the edge portion 22 of the second opening 21 ranges from 8 to 40.

[0080] The first surface layer 10 has a plurality of first openings 11, and a common edge is formed between two adjacent first openings 11. The first meshes 13 of the common edge can be counted as the number of first meshes 13 of the edge portion 12 of a single first opening 11 of the two adjacent first openings 11. The second meshes 23 of the second opening 21 of the second surface layer 20 are similar.

[0081] The number of first meshes 13 of the edge portion 12 of a single first opening 11 in a complete circle, the number of second meshes 23 of the edge portion 22 of a single second opening 21 in a complete circle, and the number of times the connecting fiber 40 passes through the first surface layer 10 and the second surface layer 20 in a predetermined area are determined, so that the first surface layer 10 and the second surface layer 20 can be reliably connected and kept apart. Moreover, the connecting fiber 40 is not easy to bend and fill in the vertical hole between the first opening 11 and the second opening 21, reducing the formation of a water film after the fiber web 100 is wetted.

[0082] The number of the first meshes 13 of the edge portion 12 of the first opening 11 and the number of the second meshes 23 of the edge portion 22 of the second opening 21 are both 16 or 24, for example. In combination with the connecting fibers 40 passing through the first meshes 13 and the second meshes 23, reliable connection and spacing between the first face layer 10 and the second face layer 20 can be achieved.

[0083] In some embodiments, the number of the first meshes 13 and the number of the second meshes 23 can be equal. The connecting fibers 40 pass through the first meshes 13 and the second meshes 23 in a one-in-one-out manner, which can achieve reliable connection between the first face layer 10 and the second face layer 20.

[0084] In other embodiments, the number of the first meshes 13 and the number of the second meshes 23 can not be equal. For example, the number of the first meshes 13 is less than the number of the second meshes 23, the connecting fibers 40 can not pass through some of the second meshes 23, but pass through most of the second meshes 23 and all of the first meshes 13, which can achieve reliable connection between the first face layer 10 and the second face layer 20.

[0085] In some embodiments, referring to Figure 2 , the connecting fibers 40 are single second fiber filaments rather than a plurality of fiber filaments. The diameter of the second fiber filament ranges from 20 microns to 120 microns, and the diameter of the second fiber filament is relatively large. The second fiber filament located between the first face layer 10 and the second face layer 20 is not easy to bend significantly, but maintains the stiffness in the thickness direction of the fiber web 100, and can be slightly bent.

[0086] The diameter and stiffness of the connecting fibers 40 are large, and the overall mechanical properties of the fiber web 100 are good. The fiber web 100 has good recovery effect after being pulled and repeatedly washed, and reduces the dislocation of the first face layer 10 and the second face layer 20. The connecting fibers 40 are not easy to bend and fill the vertical hole between the first opening 11 and the second opening 21, which reduces the ventilation resistance and reduces the water film generated by the fiber web 100 after being wetted, and can achieve good ventilation and humidification. If the diameter of the connecting fibers 40 is greater than 100 microns, the water hanging or locking capacity of the fiber web 100 will be poor.

[0087] For example, the diameter of the second fiber filament ranges from 50 microns to 80 microns. When the cross section of the second fiber filament is circular, the outer circumference of the second fiber filament ranges from 157 microns to 251 microns.

[0088] In some embodiments, the connecting fibers 40 are synthetic fibers, natural fibers or regenerated fibers. The synthetic fibers can be polyester, nylon, acrylic, polypropylene, vinylon, and chlorofiber. The natural fibers can be cotton, wool, silk and hemp. The regenerated fibers can be lyocell fiber and chitosan fiber.

[0089] In some embodiments, referring to Figure 1 , Figure 2 , the connecting fibers 40 have an antibacterial layer (not shown). The antibacterial layer of the connecting fibers 40 makes the fiber web 100 resistant to bacteria and mold. The antibacterial agent added to the connecting fibers 40 can be inorganic, organic, natural extract, such as copper, zinc, graphene, phenol, plant extract, organic acid, etc., which can be attached to the surface of the connecting fibers 40.

[0090] For example, the second fiber filaments can be polyester fibers with a filament diameter of 56 microns and embedded with graphene antibacterial agent. The second fiber filaments have a certain stiffness and will not bend significantly. The second fiber filaments are resistant to bacteria and mold.

[0091] In some embodiments, the surface of the second fiber filaments has water storage grooves (not shown), which can store more water and help improve the water storage capacity of the fiber web 100.

[0092] In some embodiments, referring to Figure 3 (a) in the same thread 30, the cross-section of a portion of the first fiber filaments 31a and the cross-section of another portion of the first fiber filaments 31b are different. The cross-section of a portion of the first fiber filaments 31a can be shaped to form water storage grooves 32, such as cross-shaped, multi-leaf-shaped, polygonal-shaped, W-shaped or U-shaped, etc. The cross-section of another portion of the first fiber filaments 31b can be circular, etc. The plurality of first fiber filaments 31 are interwoven to form the thread 30, so that the thread 30 or the face layer has different characteristics of the first fiber filaments 31.

[0093] For example, a first fiber filament 31b with a circular cross-section is used as a reinforcing fiber filament, and a plurality of first fiber filaments 31a with a shaped cross-section are used as water storage fiber filaments, and the plurality of water storage fiber filaments are interwoven around the reinforcing fiber filament. The thread 30 or the face layer has a certain strength and water storage capacity.

[0094] In other embodiments, referring to Figure 3 (b) in the same thread 30, the cross-sections of all the first fiber filaments 31 are the same. The cross-sections of all the first fiber filaments 31 can be shaped to form water storage grooves 32 to improve the water storage capacity of the thread 30 or the face layer.

[0095] For example, the cross-section of the first fiber filaments 31 can be cross-shaped, and the plurality of water storage grooves 32 form a high water storage capacity.

[0096] In some embodiments, referring to Figure 3, the first surface layer 10 and the second surface layer 20 are made of a weaving thread 30, the weight of the 9000-meter long weaving thread 30 is in the range of [30 grams, 300 grams]. The weaving thread 30 has a plurality of first fiber filaments 31. The number of the first fiber filaments 31 in the same weaving thread 30 is in the range of [18, 500]. By limiting the fineness of the weaving thread 30 and the number of the first fiber filaments 31 in the weaving thread 30, the first surface layer 10 and the second surface layer 20 woven by the weaving thread 30 have good water absorption and mechanical properties, and the structure is stable.

[0097] The denier (D) is a fineness expression of the fiber, which refers to the weight of the 9000-meter long weaving thread 30 in grams, also known as the denier number. The larger the D number, the thicker the weaving thread 30. The filament (F) is the number of fiber filaments in each weaving thread 30.

[0098] For example, the weaving thread 30 used by the first surface layer 10 and the second surface layer 20 can be a polyester of 150D / 144F specification. 150D means that the weight of the 9000-meter long weaving thread 30 is 150 grams. The weaving thread 30 is composed of 144 fine fiber filaments. In the process of making the weaving thread 30, a conventional blending process can be used, and monofilament polyester fibers with cross-shaped or triangular cross-section can be used, and graphene antibacterial agent can be embedded.

[0099] For example, the weaving thread 30 used by the first surface layer 10 and the second surface layer 20 can be a polyester of 150D / 96F specification. 150D means that the weight of the 9000-meter long weaving thread 30 is 150 grams. The weaving thread 30 is composed of 96 fine fiber filaments. In the process of making the weaving thread 30, a conventional blending process can be used, and monofilament polyester fibers with cross-shaped or triangular cross-section can be used, and graphene antibacterial agent can be embedded.

[0100] For example, the weaving thread 30 used by the first surface layer 10 and the second surface layer 20 can be a polyester of 150D / 96F specification. 150D means that the weight of the 9000-meter long weaving thread 30 is 150 grams. The weaving thread 30 is composed of 96 fine fiber filaments. In the process of making the weaving thread 30, a conventional blending process can be used, and monofilament polyester fibers with cross-shaped or triangular cross-section can be used, and graphene antibacterial agent can be embedded.

[0101] In some embodiments, please refer to Figure 1 The surface of the first surface layer 10 is provided with a first concave-convex hydrophobic layer (not shown in the figure); the surface of the second surface layer 20 is provided with a second concave-convex hydrophobic layer (not shown in the figure). The concave-convex hydrophobic layer can improve the water absorption and storage capacity of the surface layer. The concave-convex hydrophobic layer can be a micro concave-convex structure formed by adhering hydrophobic particles on the surface of the first surface layer 10 and the second surface layer 20, and the micro concave-convex structure has a water storage function. The hydrophobic particles can be ceramsite, silica particles, etc.

[0102] In some embodiments, please refer toFigure 1 The fiber mesh 100 has a double-layer woven structure, with the first surface layer 10 and the second surface layer 20 connected by connecting fibers 40. The connecting fibers 40 serve as warp fibers, while the fibers in the first surface layer 10 and the second surface layer 20 serve as weft fibers. The warp density ranges from 16 threads / inch to 50 threads / inch, and the weft density ranges from 14 threads / inch to 45 threads / inch. One inch (inch) equals 0.0254 meters (m). By defining the fiber distribution in both the warp and weft directions of the fiber mesh 100, the fiber mesh 100 exhibits good mechanical properties and structural stability. Furthermore, the first fibers 31 in the first surface layer 10 and the second surface layer 20 have water-retaining grooves 32, giving the fiber mesh 100 good water-retaining capacity.

[0103] For example, the fiber mesh 100 has a double-layer woven structure with a warp density of 30 threads / inch and a weft density of 26 threads / inch. That is, there are 30 warp-extending connecting fibers 40 within a 1-inch range in the weft direction, visually appearing as multiple connecting fibers 40. As previously mentioned, the same connecting fiber 40 can pass through the first mesh 13 (second mesh 23) once in and once out. There are 26 weft-extending first fiber filaments 31 within a 1-inch range in the warp direction.

[0104] For example, the fiber mesh 100 has a double-layer woven structure with a warp density of 42 threads / inch and a weft density of 30 threads / inch. That is, there are 42 warp-extending connecting fibers 40 within a 1-inch range in the weft direction. Visually, there are multiple connecting fibers 40. As mentioned earlier, the same connecting fiber 40 can pass through the first mesh 13 (second mesh 23) once in and once out. There are 30 weft-extending first fiber filaments 31 within a 1-inch range in the warp direction.

[0105] In some embodiments, please refer to Figure 2 , Figure 6 (a) and (b) in the text, Figure 6 This is a schematic diagram of the structure of the first opening in the first layer. The structure of the second opening in the second layer is similar. The first opening 11 is non-circular; the second opening 21 is also non-circular. Non-circular refers to shapes other than circles, such as ellipses, polygons, etc. Polygons can be rectangles, squares, hexagons, etc. Hexagons can be regular hexagons or non-regular hexagons. Setting the first opening 11 and the second opening 21 as non-circular reduces the formation of a water film at the openings after the fiber mesh 100 becomes wet, which helps reduce the ventilation resistance of the fiber mesh 100 and improves ventilation efficiency.

[0106] For example, see Figure 6 In (a), the first opening 11 and the second opening 21 are non-regular hexagons. At least two sides of the non-regular hexagon are not equal in length, making it difficult for a water film to form at the opening position, which helps to reduce ventilation resistance and improve ventilation efficiency.

[0107] For example, see Figure 6 In (b), the first opening 11 and the second opening 21 are elliptical, making it difficult for a water film to form at the opening position, which helps to reduce ventilation resistance and improve ventilation efficiency.

[0108] In some embodiments, please refer to Figure 6 In (a), the first opening 11 or the second opening 21 is hexagonal. The length of the long diagonal a1 of the hexagon ranges from [3 mm to 6 mm], and the length of the short diagonal a2 of the hexagon ranges from [2 mm to 5 mm]. The long diagonal a1 of the hexagon is the longest diagonal, and the short diagonal a2 is the shortest diagonal. By limiting the range of the diagonal lengths of the hexagon, the opening size of the first opening 11 or the second opening 21 can be limited, making it less likely for a water film to form at the opening position after the fiber mesh 100 is wetted.

[0109] For example, the first opening 11 or the second opening 21 is hexagonal, with the long diagonal a1 of the hexagon having a length of 4.5 mm and the short diagonal a2 of the hexagon having a length of 3 mm.

[0110] In some embodiments, please refer to Figure 6 In (b), the first opening 11 or the second opening 21 is elliptical. The length of the major diagonal a1 of the ellipse ranges from [4 mm to 6 mm], and the length of the minor diagonal a2 of the ellipse ranges from [2 mm to 5 mm]. The major diagonal a1 of the ellipse is the major axis, and the minor diagonal a2 is the minor axis. By limiting the range of the diagonal lengths of the ellipse, the opening size of the first opening 11 or the second opening 21 can be limited, making it less likely for a water film to form at the opening position after the fiber mesh 100 is wetted.

[0111] For example, the first opening 11 or the second opening 21 is elliptical, with the long diagonal a1 of the ellipse having a length of 6 mm and the short diagonal a2 of the ellipse having a length of 4 mm.

[0112] In some embodiments, please refer to Figure 1 The thickness D of the fiber mesh 100 ranges from 3 mm to 20 mm. Limiting the thickness of the fiber mesh 100 allows it to store a predetermined amount of moisture, ensuring sufficient contact time between the airflow and water, thus improving the humidification effect. The weight range of the fiber mesh 100 is from 80 g / m² to 1500 g / m². This ensures the fiber mesh 100 is within a suitable weight range while effectively storing moisture.

[0113] For example, the thickness of the fiber mesh 100 is 4.5 mm and the weight of the fiber mesh 100 is 290 g / m².

[0114] For example, the thickness of the fiber mesh 100 is 6 mm and the weight of the fiber mesh 100 is 450 g / m².

[0115] In some embodiments, referring to Figure 1 , the water retention amount per unit weight of the fiber mesh cloth 100 is in the range of [1 g / g, 5 g / g]. The ratio of the water retention amount of the fiber mesh cloth 100 to the weight of the fiber mesh cloth 100 can be used as a basis for selecting the first fiber yarn 31, so that the fiber mesh cloth 100 has a certain water retention amount and weight.

[0116] Referring to Figure 7 , the present embodiment provides a filter screen 200 including one fiber mesh cloth 100 or a plurality of fiber mesh cloths 100 stacked together. The filter screen 200 provided by the present embodiment has the effects of the fiber mesh cloth 100.

[0117] In order to achieve the performance requirements of the humidifier, such as the predetermined humidification amount, air volume, power consumption, and noise, the number of fiber mesh cloths 100 is set as needed, for example, 2 to 6 layers of fiber mesh cloths 100 are stacked together. When a plurality of fiber mesh cloths 100 are stacked, the plurality of fiber mesh cloths 100 can be arranged in a stacked manner and fixed by sewing. The shape of the plurality of fiber mesh cloths 100 is adjusted according to the shape of the filter screen 200. The air speed of the filter screen 200 of the present embodiment can be in the range of 0.3 m / s to 4.0 m / s.

[0118] For example, referring to Figure 7 , a cylindrical filter screen 200 is needed. A plurality of fiber mesh cloths 100 are stacked and sewn together to obtain a rectangular mesh cloth base material. The long edges of the rectangular mesh cloth base material are rolled and the two short edges are sewn together to obtain a cylindrical filter screen 200.

[0119] For example, a sheet-shaped filter screen 200 is needed. A plurality of fiber mesh cloths 100 are stacked and sewn together to obtain a sheet-shaped filter screen 200.

[0120] The present embodiment provides a humidifier including the filter screen 200 described above. The humidifier provided by the present embodiment has the effects of the fiber mesh cloth 100.

[0121] For example, the humidifier includes a water tank, a water pump, a filter screen 200, and a fan. The water pump draws water in the water tank to wet the filter screen 200. The airflow generated by the fan passes through the filter screen 200, so that the water on the filter screen 200 evaporates and is blown out with the airflow, achieving air humidification.

[0122] The filter screen and the humidifier of the present embodiment are tested as follows. In a plurality of experiments, a plurality of parameters of the filter screen / mesh cloth of the humidifier, such as thickness (mm), number of layers of mesh cloth, warp density / weft density (ends / inch), and gram weight (g / m 2), the quantitative and non-quantitative relationship between the control parameters, such as the connecting fiber yarn diameter, the first opening / second opening shape, the first opening / second opening size (mm), etc., can obtain the water absorption rate, ventilation resistance and humidification amount of the filter screen / gauze and other numerical values.

[0123] Referring to Figure 6 , the first opening 11 or the second opening 21 can be a hexagon-like shape or an ellipse-like shape. The hexagon-like shape is a hexagon with different side lengths and angles. The ellipse-like shape, also known as a deformed ellipse, is a figure obtained by deforming the original ellipse through projection. The length of the long diagonal a1 of the hexagon-like shape or the ellipse-like shape is in the range of [3mm, 6mm], and the length of the short diagonal a2 of the hexagon-like shape or the ellipse-like shape is in the range of [2mm, 5mm]. The filter screen / gauze with the above opening characteristics has good humidification effect and optimal wind resistance effect.

[0124] For example, as shown in Tables 1, 2 and 3, the thickness of the single-layer gauze in this experiment can be controlled between 3.0-8.0mm, and the wind resistance of the gauze with different thicknesses can be measured by increasing the number of gauze layers. Under the same measurement conditions, scheme 3.1 is adopted, the first opening 11 or the second opening 21 is hexagon-like, the length of the long diagonal of the hexagon-like shape is set to 5.0mm, and the length of the short diagonal is set to 3.0mm. Alternatively, scheme 3 is adopted, the first opening 11 or the second opening 21 is hexagon-like, the length of the long diagonal of the hexagon-like shape is set to 4.0mm, and the length of the short diagonal is set to 2.0mm. The water absorption rate of the gauze can be realized to be 3.0 or more, the wind resistance coefficient of the single-layer gauze can be controlled to be 2.0Pa or less, and the wind resistance of the multi-layer (N≥2) gauze stack can be realized to be less than N*2.0Pa.

[0125] Preferably, the warp density of the gauze is controlled to be 30-37 ends / inch, the weft density is controlled to be 23-26 ends / inch, and the thickness of the single-layer gauze is controlled to be 3.0-5.0mm. As shown in Table 2, scheme 3.1 is adopted, the warp density is controlled to be 30.5 ends / inch, the weft density is controlled to be 24 ends / inch, and the thickness of the single-layer gauze is controlled to be 3mm. Good humidification effect can be achieved by using single-layer or multi-layer stacked gauze.

[0126] Preferably, the gauze basis weight (g / m 2 ) is set to be 100-350g / m 2 , the warp density of the gauze is controlled to be 30-37 ends / inch, the weft density is controlled to be 23-26 ends / inch, and the humidification amount of the gauze can be realized to be 1000ml / h or more.

[0127] The filter screen / gauze with the above opening characteristics has a higher water absorption rate, smaller ventilation resistance and larger humidification amount.

[0128] The number of the first / second openings, the shape and size of the first / second openings, the filament diameter of the connecting fibers, the number of fibers, and other factors affect the water absorption and the dewatering of the mesh cloth. Good water absorption performance increases the weight of the filter mesh / mesh cloth that absorbs water under the same area and weight. Good dewatering performance increases the humidifying effect of the filter mesh / mesh cloth under the same wind force and wind resistance.

[0129] Table 1: Water absorption ratio data of the filter mesh / mesh cloth

[0130]

[0131]

[0132] In the water absorption ratio experiment, the measurement standard is to immerse the filter mesh in water for 5 minutes, take out the filter mesh and hang it for 2 minutes, and then weigh it to obtain the total weight of the filter mesh and the absorbed water after water absorption. Water absorption ratio = (total weight of the filter mesh and the absorbed water after water absorption - weight of the filter mesh before water absorption) / weight of the filter mesh before water absorption.

[0133] Table 2: Wind resistance data of the filter mesh / mesh cloth

[0134]

[0135]

[0136] Wherein, the thickness (mm) is the thickness of the single layer (i.e. 1 layer) mesh cloth. The unit of air volume is cubic meters / hour (m 3 / h). The unit of wind resistance is pascal (Pa).

[0137] Table 3: Humidifying amount data of the filter mesh / mesh cloth

[0138]

[0139] Wherein, the unit of temperature is Celsius (℃). Humidity is relative humidity, i.e. the percentage of water vapor pressure in air to saturated water vapor pressure at the same temperature. The unit of humidifying amount is milliliter / hour (ml / h).

[0140] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fibrous web comprising, The first surface layer, the second surface layer and the connecting fiber are included. The first surface layer and the second surface layer are fabrics of weaving threads, and the weaving threads have a plurality of first fiber filaments. The first surface layer and the second surface layer are arranged at intervals, the first surface layer has a plurality of first openings, and the second surface layer has a plurality of second openings. The plurality of first openings and the plurality of second openings are correspondingly connected. The edge part of the first opening and the edge part of the second opening corresponding to the first opening are connected by the connecting fiber. The connecting fiber is a second fiber filament, and the diameter of the second fiber filament ranges from 20 microns to 120 microns. The edge part of the first opening has a plurality of first meshes, the edge part of the second opening has a plurality of second meshes, and the connecting fiber extends from at least one of the first meshes to the second meshes to connect the edge part of the first opening and the edge part of the second opening; the connecting fiber passes through the first mesh and the second mesh in a straight-in straight-out manner. The hydrophilicity of the first surface layer or the second surface layer is greater than the hydrophilicity of the connecting fiber. The number of the first meshes possessed by the edge part of the first opening ranges from 8 to 40.

2. The web of claim 1 wherein, The number of the second meshes possessed by the edge part of the second opening ranges from 8 to 40. The connecting fiber is a single second fiber filament; and / or, the connecting fiber is a synthetic fiber, a natural fiber or a regenerated fiber; 3. The web of claim 1 or 2, wherein And / or, the connecting fiber has an antibacterial layer. The first fiber filament is at least one of a synthetic fiber, a natural fiber or a regenerated fiber; and / or, at least part of the surface of the first fiber filament has a water storage groove; 4. The fibrous web set forth in either of claims 1 or 2 wherein, And / or, the cross section of at least part of the first fiber filament is cruciform, multi-lobed, polygonal, W-shaped or U-shaped; And / or, the weaving thread has a hydrophilic layer; And / or, the weaving thread has an antibacterial layer; And / or, in the same weaving thread, the cross section shape of a part of the first fiber filaments is different from that of another part of the first fiber filaments; And / or, the weight of the weaving thread ranges from 30 grams to 300 grams in 9000 meters, and the number of the first fiber filaments in the same weaving thread ranges from 18 to 500. The surface of the first surface layer is provided with a first concave-convex hydrophobic layer; 5. The web of claim 1 or 2, wherein And / or, the surface of the second surface layer is provided with a second concave-convex hydrophobic layer; And / or, the fiber mesh cloth is a double-layer woven structure, the warp density ranges from 16 threads per inch to 50 threads per inch, and the weft density ranges from 14 threads per inch to 45 threads per inch; And / or, the thickness of the fiber mesh cloth ranges from 3 millimeters to 20 millimeters; And / or, the grammage of the fiber mesh cloth ranges from 80 grams per square meter to 1500 grams per square meter; And / or, the water holding capacity per unit weight of the fiber mesh cloth ranges from 1 gram per gram to 5 grams per gram. The first opening or the second opening is a hexagon, the length of the long diagonal of the hexagon ranges from 3 millimeters to 6 millimeters, and the length of the short diagonal of the hexagon ranges from 2 millimeters to 5 millimeters.

6. The fibrous web set forth in either of claims 1 or 2 wherein, ​ 7. The web of claim 1 or 2, wherein the first opening or the second opening is a quasi-hexagon, a length of a long diagonal of the quasi-hexagon is 5.0 millimeters, and a length of a short diagonal of the quasi-hexagon is 3.0 millimeters; or, the first opening or the second opening is a quasi-hexagon, a length of a long diagonal of the quasi-hexagon is 4.0 millimeters, and a length of a short diagonal of the quasi-hexagon is 2.0 millimeters.

8. A filter screen, characterized by A filter medium comprising one or more layers of the fibrous web according to any one of claims 1 to 7.

9. A humidifier, characterized in that A filter comprising the filter medium according to claim 8.

Images