Composite humidification filter screen piece and humidifier

Abstract

The utility model discloses a composite humidification filter screen piece and a humidifier. The composite humidification filter screen piece comprises a first humidification filter screen piece and a second humidification filter screen piece, the second humidifying filter screen piece is connected with the first humidifying filter screen piece, the second humidifying filter screen piece comprises a filtering base body and an adsorption piece, and the adsorption piece comprises an activated carbon piece, an ion exchange resin piece, a molecular sieve piece, a metal organic framework piece, a porous silica gel piece or a porous ceramic piece. When fluid flows through the second humidifying filter screen piece, the adsorption piece is suitable for adsorbing impurities to remove color. According to the composite humidification filter screen piece, the common humidification and impurity removal functions are achieved, pollutants causing yellowing and stinking of a water body in the water body can be removed, and the functions are rich. When the composite humidification filter screen piece is used for the humidifier, the problems of yellowing, stinking and the like of water stored in a water tank can be solved, and the use performance of the humidifier is improved.

Description

Technical Field

[0001] This utility model relates to the field of humidifier technology, and in particular to a composite humidifying filter and a humidifier. Background Technology

[0002] A humidifier is an electrical device that increases the humidity in a room. Existing household humidifiers mainly include two types: mist humidifiers and mist-free humidifiers. Mist-free humidifiers use a wet curtain made of absorbent synthetic fiber material to absorb moisture on its surface, and then a fan continuously blows air to disperse the moisture on the surface of the wet curtain into the air.

[0003] However, humidifiers with evaporative cooling pads often experience problems such as yellowing and foul odors in the water tank after prolonged use, requiring frequent maintenance and reducing the humidifier's performance. Furthermore, the evaporative cooling pad only provides humidification and basic filtration, making its functionality relatively limited. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a composite humidifying filter element that, in addition to its ordinary humidifying and impurity removal functions, can also remove pollutants from water that cause yellowing and odor, offering a wide range of functions. When used in a humidifier, this composite humidifying filter element can solve problems such as yellowing and odor in the water tank, improving the performance of the humidifier.

[0005] Another objective of this invention is to provide a humidifier that uses the aforementioned composite humidifying filter element.

[0006] According to a first aspect of the present invention, a composite humidifying filter element includes: a first humidifying filter element; and a second humidifying filter element connected to the first humidifying filter element. The second humidifying filter element includes a filter substrate and an adsorption element. The adsorption element includes an activated carbon element, an ion exchange resin element, a molecular sieve element, a metal-organic framework element, a porous silica gel element, or a porous ceramic element. When fluid flows through the second humidifying filter element, the adsorption element is suitable for adsorbing impurities to remove color and odor.

[0007] According to the first aspect of this utility model, the composite filter element has a simple structure and a reasonable arrangement, which is conducive to the performance of the composite filter element. When the composite filter element is used in a humidifier, the first filter element has a basic filtration function, which can remove impurities in the water to ensure the cleanliness of the humidified air. The second filter element has the same filtration function, and the adsorbent in the second filter element can remove pollutants that cause discoloration and odor in the water through physical or chemical methods, thereby effectively inhibiting yellowing of the water tank. Because yellowing is inhibited, humidifier users can reduce the maintenance frequency of the humidifier, and the water quality in the humidifier is qualified, which can ensure the indoor air quality during use. In addition, by setting a filter substrate, the second filter element can not only have a filtration function, but also serve as a carrier for the adsorbent, which is conducive to the setting and use of the adsorbent, thereby facilitating the long-term stable use of the composite adsorbent element and extending the service life of the composite filter element.

[0008] According to some embodiments of the present invention, the filter substrate includes non-woven fabric, woven fabric, microporous membrane or cellulose paper.

[0009] According to some embodiments of the present invention, one side of the first filter element is connected to one side of the second filter element, and the first filter element and the second filter element are on the same plane.

[0010] According to some embodiments of the present invention, there are multiple first filter elements and multiple second filter elements, which are arranged alternately. According to some embodiments of the present invention, the first humidifying filter element has a cylindrical structure, and there are multiple second humidifying filter elements, which are respectively disposed at both ends of the axial direction of the first humidifying filter element. One side of the second humidifying filter element in the thickness direction is connected to one end face of the first humidifying filter element in the axial direction.

[0011] According to some embodiments of the present invention, the ratio of the area of ​​the first humidifying filter element to the area of ​​the second humidifying filter element is S, wherein S satisfies: 1≤S≤50.

[0012] According to some embodiments of the present invention, the first humidifying filter element and the second humidifying filter element are stacked, and the first humidifying filter element is located downstream of the fluid flow.

[0013] According to some embodiments of the present invention, the ratio of the thickness of the second humidifying filter element to the thickness of the composite humidifying filter element is D, wherein D satisfies: 0.1≤D≤0.9.

[0014] According to some embodiments of the present invention, the second humidifying filter element is bonded or ultrasonically welded to the first humidifying filter element to form a whole; or, the second humidifying filter element is detachably connected to the first humidifying filter element.

[0015] According to some embodiments of the present invention, the first humidifying filter element includes non-woven fabric, woven fabric, microporous membrane or cellulose paper; and / or, the cross-sectional shape of the first humidifying filter element and / or the second humidifying filter element is serrated.

[0016] A humidifier according to a second aspect of the present invention includes a filter element, the filter element comprising: a composite humidifying filter element, the composite humidifying filter element being the composite humidifying filter element described in the first aspect of the present invention; and an end cap connected to the composite humidifying filter element, the shape of the composite humidifying filter element being adapted to the shape of the end cap.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a composite humidifying filter element according to an embodiment of the present invention, wherein the composite humidifying filter element is wound into a cylindrical shape;

[0020] Figure 2 This is a schematic diagram of a humidifier filter element according to an embodiment of the present utility model, wherein the first humidifying filter element and the second humidifying filter element are arranged circumferentially along the filter element;

[0021] Figure 3 This is a top view of a composite humidifying filter element according to an embodiment of the present invention;

[0022] Figure 4 This is a side view of the filter element of a humidifier according to another embodiment of the present invention, wherein the composite humidifying filter element is wound into a cylindrical shape;

[0023] Figure 5 This is a top view of a composite humidifying filter element according to another embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the filter element of a humidifier according to another embodiment of the present invention, wherein the first humidifying filter element and the second humidifying filter element are arranged along the axial direction of the filter element;

[0025] Figure 7 This is a top view of a composite humidifying filter element according to another embodiment of the present invention.

[0026] Figure label:

[0027] 100. Composite humidifying filter element; 200. Humidifier;

[0028] 1. First humidifying filter element; 2. Second humidifying filter element;

[0029] 201, Filter element; 2011, End cap. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1 This invention describes a composite humidifying filter element 100 according to an embodiment of the present invention. (In conjunction with...) Figures 2-7 In the following description of this application, the composite humidifying filter element 100 used in the humidifier 200 is used as an example. However, it is not limited to this.

[0031] like Figures 1-5 As shown, the composite humidifying filter element 100 according to the first aspect embodiment of the present invention includes a first humidifying filter element 1 and a second humidifying filter element 2.

[0032] Specifically, the second humidifying filter element 2 is connected to the first humidifying filter element 1. The second humidifying filter element 2 includes a filter substrate and an adsorption element. The adsorption element includes activated carbon, ion exchange resin, molecular sieve, metal-organic framework, porous silica gel, or porous ceramic. When fluid (e.g., clean water) flows through the second humidifying filter element 2, the adsorption element is suitable for adsorbing impurities to remove color and odor.

[0033] For example, the second humidifying filter element 2 and the first humidifying filter element 1 are both sheet-like structures, and both are formed into porous structures. The connection methods of the second humidifying filter element 2 and the first humidifying filter element 1 include stacking, splicing, and alternating arrangement. The arrangement of the filter substrate and the adsorbent element includes various methods. For example, the materials of the filter substrate and the adsorbent element can be mixed and then prepared into a mesh structure with a specific shape. Alternatively, an adsorbent element with adsorption properties can be connected to the filter substrate, so that the second humidifying filter element 2 has both filtration and adsorption functions. Furthermore, the composite humidifying filter element 100 has a simple structure and a reasonable arrangement, which is conducive to the performance of the composite humidifying filter element 100.

[0034] When the composite humidifying filter element 100 is used in the humidifier 200, clean water from the water tank (not shown) of the humidifier 200 flows to the composite humidifying filter element 100. The fan continuously blows air, dispersing the water on the surface of the composite humidifying filter element 100 into the air to achieve the humidification function. During this process, the first humidifying filter element 1 has a basic filtration function, removing impurities from the water to ensure the cleanliness of the humidified air. The second humidifying filter element 2 has the same filtration function, and the adsorption element in the second humidifying filter element 2 can remove pollutants that cause discoloration and odor from the water through physical or chemical methods, thereby effectively inhibiting yellowing of the water tank. Because yellowing is inhibited, the user of the humidifier 200 can reduce the maintenance frequency of the humidifier 200, and the qualified water quality in the humidifier 200 ensures the indoor air quality during use. In addition, by setting a filter substrate, the second humidifying filter element 2 can not only have a filtration function, but also serve as a carrier for the adsorbent. This is beneficial for the setting and use of the adsorbent, thereby facilitating the long-term stable use of the composite adsorbent element and extending the service life of the composite humidifying filter element 100.

[0035] Humidifiers 200 using composite humidifying filter element 100 do not experience issues such as water tank yellowing or odor throughout their entire product lifecycle. Manufacturers of humidifiers 200 do not need to modify their machine design, and users do not need to use purified water. The humidifying filter consumables made from composite humidifying filter element 100 are compatible with all humidifier models on the market, resulting in high economic efficiency.

[0036] For example, the activated carbon element can be an adsorbent made of activated carbon material, or it can be a mixture of filter substrate material and activated carbon material to form a mesh-like second humidifying filter element 2. Activated carbon has a highly developed pore structure and a large specific surface area, which can effectively adsorb impurities such as residual chlorine, heavy metal ions, iron ions, and organic matter in water, reduce odors in the water, improve humidification effect, and make the water vapor released into the air purer. Through adsorption, activated carbon can reduce the content of impurities in the water, help prevent scale formation, extend the service life of the humidifier 200, and also avoid damage or blockage of the humidifier 200 components due to water quality problems. Activated carbon can adsorb some nutrients in the water to a certain extent, reducing the nutrients for bacterial growth, thereby inhibiting the reproduction of bacteria and microorganisms in the humidifier 200 water tank, reducing the risk of bacteria entering the air with water vapor, and ensuring the hygiene and health of indoor air.

[0037] For example, the ion exchange resin element can be an adsorbent made of ion exchange resin, or it can be a mixture of filter matrix material and ion exchange resin material to form a mesh-like second humidifying filter element 2. Ion exchange resin can efficiently remove various cations (such as calcium, magnesium, iron, etc.) and anions (such as chloride ions, sulfate ions, etc.) from water through ion exchange. When used in a humidifier 200, it can significantly reduce water hardness, prevent calcium and magnesium ions from forming scale inside the humidifier 200, extend the humidifier 200's lifespan, and avoid affecting humidification performance due to scale accumulation. Water treated with ion exchange resin has high purity and contains almost no common ionic impurities. This helps reduce potential odors and harmful substances in the water, making the water vapor produced by the humidifier 200 purer, thereby improving indoor air quality and providing users with a healthier breathing environment. Ion exchange resin can remove or convert some unstable ions in water into more stable forms, making the water quality more stable. During the operation of the humidifier 200, stable water quality ensures consistent humidification effect and avoids fluctuations in humidification output or other problems caused by changes in water quality.

[0038] For example, the molecular sieve element can be an adsorbent made of molecular sieve, or the material of the filter matrix can be mixed with the molecular sieve material to prepare a mesh-like second humidifying filter element 2. Molecular sieves have a uniform microporous structure with pore sizes similar to water molecules, exhibiting a strong adsorption capacity for water molecules. In the humidifier 200, it can preferentially adsorb moisture from the air or water, effectively drying the air or purifying the water, reducing impurities in the water, and improving the purity of the humidifying water. Furthermore, molecular sieves can selectively adsorb based on the size and shape of molecules. Besides adsorbing moisture, it can also adsorb some small organic molecules, bacteria, and viruses in the water, while adsorbing little or no larger molecules. This helps remove harmful components from the water, making the water vapor produced by the humidifier 200 cleaner and reducing potential threats to human health. When the humidifier 200 uses water treated with molecular sieves for humidification, the water vapor released into the air is purer, reducing odors and pollutants caused by impurities in the water, thereby improving indoor air quality and providing a more comfortable and healthy living environment. Because molecular sieves can effectively remove impurities from water, prevent scale formation and the deposition of impurities on the internal components of humidifier 200, they reduce corrosion and clogging of humidifier 200, extend the service life of humidifier 200, and reduce maintenance costs.

[0039] For example, the metal-organic framework (MOF) component can be an adsorbent made of MOFs, or the filter matrix material can be mixed with MOF material to form a mesh-like second humidifying filter 2. MOFs have a very large specific surface area and abundant pore structure, providing numerous adsorption sites and exhibiting high adsorption capacity for various impurities in water, such as heavy metal ions and organic pollutants. This means it can efficiently remove various impurities from water, improve the purity of humidified water, reduce the accumulation of impurities inside the humidifier 200, and extend the service life of the humidifier 200. Some MOF materials possess good chemical and thermal stability, maintaining structural and performance stability under the operating conditions of the humidifier 200. This ensures they can continuously perform their impurity removal function during long-term use without rapidly failing due to water corrosion, temperature changes, or other factors. Good stability also helps reduce operating costs, as frequent replacement of the impurity removal material is unnecessary.

[0040] For example, the porous ceramic element can be an adsorbent made of porous ceramic, or the material of the filter matrix can be mixed with the porous ceramic element to form a mesh-like second humidifying filter element 2. Porous ceramics have a narrow pore size distribution range, enabling precise interception of suspended solids, colloids, and microorganisms in the water, resulting in purer filtered water and reducing problems such as humidifier nozzle clogging and water quality deterioration caused by impurities. Its interior contains numerous tiny, interconnected pores with a high porosity and specific surface area, allowing for full contact between the filtered material and the ceramic material, greatly improving the filtration effect and effectively removing various impurities from the water, providing a clean water source for the humidifier 200.

[0041] According to the first aspect of the present invention, the composite humidifying filter element 100 has a simple structure and reasonable arrangement, which is conducive to the performance of the composite humidifying filter element 100. When the composite humidifying filter element 100 is used in the humidifier 200, the first humidifying filter element 1 has a basic filtration function, which can remove impurities in the water to ensure the cleanliness of the humidified air. The second humidifying filter element 2 has the same filtration function, and the adsorption element in the second humidifying filter element 2 can remove pollutants that cause discoloration and odor in the water through physical or chemical methods, thereby effectively suppressing the yellowing and odor problems of the humidifier 200 water tank. Because yellowing is suppressed, the user of the humidifier 200 can reduce the maintenance frequency of the humidifier 200, and the water quality in the humidifier 200 is qualified, which can ensure the indoor air quality during use. In addition, by setting a filter substrate, the second humidifying filter element 2 can not only have a filtration function, but also serve as a carrier for the adsorbent. This is beneficial for the setting and use of the adsorbent, thereby facilitating the long-term stable use of the composite adsorbent element and extending the service life of the composite humidifying filter element 100.

[0042] According to some embodiments of the present invention, the filter substrate includes nonwoven fabric, woven fabric, microporous membrane or cellulose paper.

[0043] For example, the filter substrate can be a porous material made of hydrophilic fibers, polymers, or other similar materials. Cellulose paper components can be paper materials made from cellulose materials and their derivatives, such as cellulose fibers, cellulose acetate resin, cuprammonium cellulose, cotton, or wood pulp. Filter substrates can also be made of polyamide, polyester, or polyolefin materials.

[0044] With this design, when the filter substrate is non-woven fabric, its dense fiber structure effectively intercepts dust, impurities, and microorganisms in the water, resulting in high filtration precision. This provides the humidifier 200 with a cleaner water source, reducing damage to its internal components and preventing impurities from entering the air with the water vapor and affecting air quality. Furthermore, the soft material will not cause wear and tear on the humidifier 200's components, and even if a small amount of fiber falls off, it will not cause harm to the human body, making it relatively safe to use. Moreover, the non-woven fabric can quickly absorb moisture, distributing it evenly within the filter layer, which helps improve filtration efficiency. It also acts as a buffer for water flow, reducing the impact and noise generated when water flows inside the humidifier 200. In addition, the production process of non-woven fabric is relatively simple, and the raw material cost is low. Therefore, when used on a large scale in the humidifier 200, product costs can be effectively controlled, making the humidifier 200 more cost-effective.

[0045] When the filter substrate is woven fabric, the woven fabric, made of woven fibers, has high mechanical strength, can withstand greater water pressure and water flow impact, and is not easily damaged. During long-term use of the humidifier 200, it can maintain stable filtration performance, reducing frequent replacements due to filter material damage. Furthermore, the woven fabric surface is relatively smooth and has good wear resistance. When rubbing against other internal components of the humidifier 200, it is less likely to generate fiber debris, thus avoiding secondary pollution of the water and extending the service life of other components. In addition, the relatively loose structure of the woven fabric makes it less prone to clogging. After a period of use, simple cleaning can remove surface impurities and restore its filtration performance, thereby reducing operating costs and making it more environmentally friendly. Moreover, the woven fabric has a certain degree of breathability, preventing water accumulation during water filtration and thus helping to maintain normal air pressure inside the humidifier 200, ensuring stable operation.

[0046] When the filter substrate is a microporous membrane, the microporous membrane has extremely small and uniform micropores with precisely controllable pore size, enabling high-precision filtration. It effectively traps bacteria, viruses, colloids, and even smaller particulate impurities in the water, providing high-quality filtered water for the humidifier 200 and significantly improving the safety and purity of humidification. Furthermore, the microporous membrane has unique waterproof and moisture-permeable properties, preventing water leakage while allowing water vapor to pass through. During filtration, water is effectively trapped on one side of the membrane, while the filtered pure water vapor can smoothly pass through the membrane into the evaporation system of the humidifier 200, improving humidification efficiency. In addition, the smooth surface of the microporous membrane makes it difficult for impurities and dirt to adhere. Even if a small amount of impurities adheres to the membrane surface during use, it can be easily removed by simple rinsing or wiping, making maintenance convenient.

[0047] When the filter substrate is cellulose paper, it is mainly made of natural cellulose, derived from plant fibers, and has good biodegradability, making it environmentally friendly and meeting modern consumers' demand for eco-friendly products. At the same time, it does not release harmful substances into the water, ensuring the safety of the humidification water. Furthermore, it can reduce the generation of microplastics, minimizing harm to the environment and human health. Cellulose has abundant polar groups such as hydroxyl groups, which can adsorb some polar impurities, pigments, and odor substances in the water. It not only filters out visible impurities but also improves the odor and color of the water, making the water vapor produced by the humidifier 200 fresher. In addition, cellulose paper is soft and has a certain degree of flexibility, allowing it to adapt to different internal structures and shapes of the humidifier 200, making installation and use convenient and preventing damage to the humidifier 200 components from hard impacts. Furthermore, cellulose paper raw materials are widely available, the production process is relatively mature, and the cost is moderate.

[0048] According to some embodiments of this utility model, combined with Figures 1-3One side of the first humidifying filter element 1 is connected to one side of the second humidifying filter element 2, and the first humidifying filter element 1 and the second humidifying filter element 2 are within the same filter structure. For example, in Figures 1-3 In the example, when the first humidifying filter element 1 and the second humidifying filter element 2 are each one, the first humidifying filter element 1 and the second humidifying filter element 2 can be connected end to end to form a sheet-like composite humidifying filter element 100. For example, the first humidifying filter element 1 and the second humidifying filter element 2 can each be rectangular in shape. The above-mentioned "one side of the first humidifying filter element 1 is connected to one side of the second humidifying filter element 2" refers to: Figure 2 As shown, the long side of the first humidifying filter element 1 is connected to the long side of the second humidifying filter element 2; or, the short side of the first humidifying filter element 1 is connected to the short side of the second humidifying filter element 2. Alternatively, when the shapes of the first humidifying filter element 1 and the second humidifying filter element 2 are other polygonal or irregular shapes, any side of the first humidifying filter element 1 and any side of the second humidifying filter element 2 are connected to form a composite humidifying filter element 100.

[0049] It should be noted that the phrase "within the same filter structure" can be understood as follows: the composite humidifying filter element 100 can be designed as a planar structure. In this case, the first humidifying filter element 1 and the second humidifying filter element 2, when spliced ​​together, form a sheet-like structure, and the first humidifying filter element 1 and the second humidifying filter element 2 are approximately in the same plane. The composite humidifying filter element 100 can also be designed as a three-dimensional structure, such as a cylindrical structure. In this case, the first humidifying filter element 1 and the second humidifying filter element 2 are both cylindrical structures, and the first humidifying filter element 1 and the second humidifying filter element 2 can be aligned along the axial direction of the filter structure (e.g., ...). Figure 6 (as shown) or circumferential arrangement (such as) Figure 1 and Figure 2 As shown), the first humidifying filter element 1 and the second humidifying filter element 2 have the same bending angle, and the outer peripheral surfaces of the first humidifying filter element 1 and the second humidifying filter element 2 form the outer peripheral surface of the filter structure. The composite humidifying filter element 100 can be manufactured into humidifying filter cartridges or filter structures suitable for various humidifier models through folding, winding, and other methods, adapting to all humidifier models on the market. For example, Figures 1-3 The image shows a composite humidifying filter element 100 wound into a cylindrical shape for use in a humidifier 200.

[0050] This arrangement simplifies the manufacturing process of the composite humidifying filter element 100, resulting in a more rational layout. Furthermore, the simple structure and low manufacturing difficulty of the composite humidifying filter element 100 improve its production efficiency. In addition, while ensuring the filtration and humidification effect, the composite humidifying filter element 100 also possesses good adsorption capabilities, preventing water from yellowing or discoloring over long-term use, further enhancing its performance.

[0051] According to some embodiments of this utility model, combined with Figure 2 and Figure 3 There are multiple first humidifying filter elements 1 and multiple second humidifying filter elements 2, and the multiple first humidifying filter elements 1 and multiple second humidifying filter elements 2 are arranged alternately. For example, in Figure 2 and Figure 3 In the example, there are five first humidifying filter elements 1 and five second humidifying filter elements 2, arranged alternately in a sheet-like composite humidifying filter element 100. The composite humidifying filter element 100 can be manufactured into humidifying filter consumables suitable for various humidifier models through folding, winding, and other methods, making it compatible with all humidifier models on the market. For example, Figure 2 The image shows a composite humidifying filter element 100 wound into a cylindrical shape for use in a humidifier 200.

[0052] This arrangement increases the dispersion of the second humidifying filter element 2 within the composite humidifying filter element 100. That is, the second humidifying filter element 2 is located at multiple positions within the composite humidifying filter element 100. When water flows into the composite humidifying filter element 100 from different directions, each angle and position of the composite humidifying filter element 100 exhibits excellent impurity removal and adsorption performance. This results in a more rational arrangement of the first humidifying filter element 1 and the second humidifying filter element 2, further enhancing the adsorption performance of the composite humidifying filter element 100 and improving its overall effectiveness. Furthermore, the simple arrangement of the first humidifying filter element 1 and the second humidifying filter element 2 simplifies the processing of the composite humidifying filter element 100. The rational arrangement also reduces production difficulty, thereby improving the production efficiency of the composite humidifying filter element 100.

[0053] According to some embodiments of this utility model, the first humidifying filter element 1 has a cylindrical structure, and there are multiple second humidifying filter elements 2. These multiple second humidifying filter elements 2 are respectively disposed at both ends of the first humidifying filter element 1 along its axial direction. One side of the second humidifying filter element 2 along its thickness direction is connected to one end face of the first humidifying filter element 1 along its axial direction. For example, the first humidifying filter element 1 is processed into a cylindrical shape, such as... Figure 1As shown, the first humidifying filter element 1 is hollow inside. Two second humidifying filter elements 2 can be provided, each connected to one of the two axial end faces of the first humidifying filter element 1. The second humidifying filter element 2 has a ring-shaped structure and extends circumferentially along the first humidifying filter element 1. Therefore, the second humidifying filter element 2 can directly function as the end cap 2011 of the filter element 201 of the humidifier 200. Without using the end cap 2011, the composite humidifying filter element constitutes an independently usable filter element 201 (i.e., the aforementioned filter structure), enabling the filter element 201 to perform humidification, filtration, adsorption, and deodorization. It can be sold as a separate unit, making it convenient to use and thus improving the performance of the composite humidifying filter element 100.

[0054] According to some embodiments of the present invention, the ratio of the area of ​​the first humidifying filter element 1 to the area of ​​the second humidifying filter element 2 is S, wherein S satisfies: 1≤S≤50.

[0055] The aforementioned "area" refers to the cross-sectional area after transversely cutting along the surface of the first humidifying filter element 1 or the second humidifying filter element 2. It is also used to represent the area relationship after the first humidifying filter element 1 and the second humidifying filter element 2 are joined together. Therefore, by setting the ratio S of the area of ​​the first humidifying filter element 1 to the area of ​​the second humidifying filter element 2 to satisfy 1≤S≤50, the proportions of the first humidifying filter element 1 and the second humidifying filter element 2 in the composite humidifying filter element 100 are reasonably set, reducing the processing cost of the composite humidifying filter element 100 while ensuring its performance.

[0056] According to some embodiments of the present invention, a first humidifying filter element 1 and a second humidifying filter element 2 are stacked, with the first humidifying filter element 1 located downstream of the fluid flow.

[0057] For example, in Figure 4 and Figure 5 In the example, the second humidifying filter element 2 is connected to one side of the first humidifying filter element 1 in the thickness direction. When the composite humidifying filter element 100 is used in the humidifier 200, the composite humidifying filter element 100 is wound into a cylindrical shape and placed on the filter element 30 of the humidifier 200. The outer surface of the first humidifying filter element 1 is the outer surface of the filter element 30, and the second humidifying filter element 2 is located radially inside the first humidifying filter element 1. When fluid flows to or wets the composite humidifying filter element 100, the fluid first contacts the first humidifying filter element 1, and the water filtered by the first humidifying filter element 1 then flows to the second humidifying filter element 2.

[0058] Therefore, the first humidifying filter element 1 can initially filter out impurities in the water. The filtered water then comes into contact with the second humidifying filter element 2, allowing the second humidifying filter element 2 to adsorb and remove substances that cause the water to turn yellow or smelly, thus better maximizing the performance of the second humidifying filter element 2. Furthermore, this design enriches the arrangement options for the first humidifying filter element 1 and the second humidifying filter element 2, allowing for specific configurations based on actual usage requirements in production to better meet practical applications.

[0059] According to some embodiments of the present invention, the ratio of the thickness of the second humidifying filter element 2 to the thickness of the composite humidifying filter element 100 is D, wherein D satisfies: 0.1≤D≤0.9.

[0060] For example, when the ratio D of the thickness of the first humidifying filter element 1 to the thickness of the composite humidifying filter element 100 is less than 0.1, that is, when the ratio of the thickness of the second humidifying filter element 2 to the thickness of the first humidifying filter element 1 is less than 1:9, the volume ratio of the second humidifying filter element 2 is small, reducing the adsorption performance of the composite humidifying filter element 100. When the ratio D of the thickness of the first humidifying filter element 1 to the thickness of the composite humidifying filter element 100 is greater than 0.9, that is, when the ratio of the thickness of the second humidifying filter element 2 to the thickness of the first humidifying filter element 1 is greater than 9:1, the volume ratio of the second humidifying filter element 2 is large, increasing the processing cost of the composite humidifying filter element 100. Therefore, by setting the ratio D of the thickness of the second humidifying filter element 2 to the thickness of the composite humidifying filter element 100 to satisfy 0.1≤D≤0.9, the volume ratio of the first humidifying filter element 1 and the second humidifying filter element 2 in the composite humidifying filter element 100 is reasonably set, which reduces the processing cost of the composite humidifying filter element 100 while ensuring the performance of the composite humidifying filter element 100.

[0061] According to some embodiments of this utility model, the second humidifying filter element 2 is bonded or ultrasonically welded to the first humidifying filter element 1. Alternatively, the second humidifying filter element 2 and the first humidifying filter element 1 are detachably connected.

[0062] For example, the second humidifying filter element 2 and the first humidifying filter element 1 can be connected by hot melt adhesive bonding, Velcro bonding, ultrasonic welding, or by applying the second humidifying filter element 2 to the surface of the first humidifying filter element 1 through spraying or scraping processes. When the second humidifying filter element 2 and the first humidifying filter element 1 are detachably connected, they can be fixed into a whole using stainless steel clips.

[0063] This design simplifies the connection between the first humidifying filter element 1 and the second humidifying filter element 2, and reduces the manufacturing difficulty of the composite humidifying filter element 100, thereby further improving its production efficiency. Furthermore, the connection between the second humidifying filter element 2 and the first humidifying filter element 1 is strong, preventing either element from easily detaching. This facilitates the long-term stable use of the composite humidifying filter element 100, thus extending its service life. The composite humidifying filter element 100 can be modularized and mass-produced. It can also be made into small modules and embedded in conventional humidifying filters.

[0064] According to some embodiments of this utility model, the first humidifying filter element 1 includes non-woven fabric, woven fabric, microporous membrane, or cellulose paper. And / or, combined with... Figure 3 and Figure 7 The cross-sectional shape of the first humidifying filter element 1 and / or the second humidifying filter element 2 is serrated.

[0065] For example, the first humidifying filter element 1 and the filter substrate can be made of the same material or different materials. The first humidifying filter element 1 can be a porous material made of hydrophilic fibers, polymers, or other substances. The cellulose paper element can be a paper material made of cellulose materials and their derivatives, such as cellulose fibers, cellulose acetate resin, cuprammonium cellulose, cotton, or wood pulp. The first humidifying filter element 1 can also be made of polyamide, polyester, or polyolefin materials.

[0066] With this configuration, when the first humidifying filter element 1 is made of non-woven fabric, the fabric's dense fiber structure effectively intercepts dust, impurities, and microorganisms in the water, providing a high filtration precision. This ensures a cleaner water source for the humidifier 200, reducing damage to its internal components and preventing impurities from entering the air with the water vapor and affecting air quality. Furthermore, the soft material prevents wear on the humidifier 200's components, and even if a small amount of fiber falls off, it will not harm the human body, making it relatively safe to use. Moreover, the non-woven fabric quickly absorbs moisture, distributing it evenly within the filter layer, which helps improve filtration efficiency. It also buffers the water flow to some extent, reducing the impact and noise generated when water flows inside the humidifier 200. Additionally, the production process of non-woven fabric is relatively simple, and the raw material cost is low. Therefore, its large-scale application in the humidifier 200 effectively controls product costs, making the humidifier 200 more cost-effective.

[0067] When the first humidifying filter element 1 is woven fabric, the woven fabric, made of woven fibers, has high mechanical strength, can withstand greater water pressure and water flow impact, and is not easily damaged. During long-term use of the humidifier 200, it can maintain stable filtration performance, reducing frequent replacements due to filter material damage. Furthermore, the woven fabric has a relatively smooth surface and good wear resistance, making it less likely to generate fiber debris when rubbing against other internal components of the humidifier 200, thus avoiding secondary pollution of the water and extending the service life of other components. In addition, the relatively loose structure of the woven fabric makes it less prone to clogging. After a period of use, simple cleaning can remove surface impurities and restore its filtration performance, thereby reducing operating costs and making it more environmentally friendly. Moreover, the woven fabric has a certain degree of breathability, preventing water accumulation during water filtration and thus helping to maintain normal air pressure inside the humidifier 200, ensuring stable operation.

[0068] When the first humidifying filter element 1 is a microporous membrane, the microporous membrane has extremely small and uniform micropores with precisely controllable pore size, enabling high-precision filtration. It effectively traps bacteria, viruses, colloids, and even smaller particulate impurities in the water, providing high-quality filtered water to the humidifier 200 and significantly improving the safety and purity of humidification. Furthermore, the microporous membrane has unique waterproof and moisture-permeable properties, preventing water leakage while allowing water vapor to pass through. During filtration, water is effectively trapped on one side of the membrane, while the filtered pure water vapor can smoothly pass through the membrane into the evaporation system of the humidifier 200, improving humidification efficiency. In addition, the smooth surface of the microporous membrane makes it difficult for impurities and dirt to adhere. Even if a small amount of impurities adheres to the membrane surface during use, it is easily removed by simple rinsing or wiping, making maintenance convenient.

[0069] When the first humidifying filter element 1 is made of cellulose paper, it is mainly made of natural cellulose, derived from plant fibers, and has good biodegradability, making it environmentally friendly and meeting the demands of modern consumers for environmentally friendly products. At the same time, it does not release harmful substances into the water, ensuring the safety of the humidifying water. Furthermore, it can reduce the generation of microplastics, lowering harm to the environment and human health. Cellulose has abundant polar groups such as hydroxyl groups, which can adsorb some polar impurities, pigments, and odor substances in the water. It can not only filter out visible impurities but also improve the odor and color of the water, making the water vapor produced by the humidifier 200 fresher. In addition, cellulose paper is soft and has a certain degree of flexibility, allowing it to adapt to different internal structures and shapes of the humidifier 200, making installation and use convenient and preventing damage to the humidifier 200 components from hard impacts. Furthermore, cellulose paper raw materials are widely available, the production process is relatively mature, and the cost is moderate.

[0070] The first humidifying filter element 1 and the second humidifying filter element 2 can be combined into a composite humidifying filter element 100 by physical or chemical means. The combination methods include, but are not limited to, welding, bonding, adhesion, stacking, mounting, coating, blending, and grafting. The first humidifying filter element 1 accounts for 1%-99% of the mass of the composite humidifying filter element 100, and the second humidifying filter element 2 accounts for 99%-1% of the mass of the composite humidifying filter element 100. Preferably, the first humidifying filter element 1 accounts for 10%-90% of the mass of the composite humidifying filter element 100, and the second humidifying filter element 2 accounts for 90%-10% of the mass of the composite humidifying filter element 100. The connection and arrangement of the first humidifying filter element 1 and the second humidifying filter element 2 can be achieved through various forms such as top-bottom splicing structures, internal-external combination structures, embedded structures, and partially spaced splicing structures, making them suitable for various mist-free humidifier models and compatible with all humidifier models on the market.

[0071] Combination Figure 3 and Figure 7 The cross-sectional shape of the first humidifying filter element 1 and / or the second humidifying filter element 2 is serrated. Therefore, the serrated shape of the first humidifying filter element 1 and the second humidifying filter element 2 increases the contact area between the water and the first humidifying filter element 1 and the second humidifying filter element 2, thereby further improving the humidification and filtration effect of the first humidifying filter element 1, and also improving the humidification, filtration, and adsorption effect of the second humidifying filter element 2.

[0072] Optionally, the first humidifying filter element 1 has antibacterial properties. During the manufacturing process, the first humidifying filter element 1 is endowed with antibacterial characteristics through methods such as additive doping and chemical grafting modification. The adsorbent element can be loaded into the filter matrix through methods such as blending, doping, coating, spraying, and grafting. The adsorbent element accounts for 5%-100% of the mass of the second humidifying filter element 2.

[0073] According to the humidifier 200 of the second aspect embodiment of the present utility model, combined with Figures 2-7 The humidifier 200 includes a filter element 201, which includes a composite humidifying filter element 100 and an end cap 2011. The composite humidifying filter element 100 is the composite humidifying filter element 100 according to the first aspect embodiment described above. The end cap 2011 is connected to the composite humidifying filter element 100, and the shape of the composite humidifying filter element 100 is adapted to the shape of the end cap 2011.

[0074] For example, when the composite humidifying filter element 100 is wound into a cylindrical structure, end caps 2011 can be respectively disposed at both ends of the composite humidifying filter element 100 along its axial direction. The end caps 2011 are connected to the composite humidifying filter element 100 to jointly construct a cylindrical filter element 201. The filter element 201 can be directly disposed in the humidifier 200 for use.

[0075] According to the second aspect of this utility model, the humidifier 200, by employing the aforementioned composite humidifying filter element 100, improves the filtration, impurity removal, and adsorption performance of the humidifier 200. The humidifier 200 using the composite humidifying filter element 100 does not experience issues such as water tank yellowing or odor throughout its entire product lifecycle. Humidifier 200 manufacturers do not need to change the machine design, and users do not need to use purified water. The humidifying filter consumable made from the composite filter curtain is compatible with all humidifier 200 models on the market, resulting in high economic efficiency. Furthermore, the composite humidifying filter element 100 can be manufactured into humidifying filter consumables suitable for various humidifier 200 models through folding, rolling, or other methods, making it compatible with all humidifier 200 models on the market. For example, the humidifier 200 is a mist-free humidifier. Additionally, it avoids secondary pollution caused by residual moisture on the surface of the composite humidifying filter element 100 in the humidifier 200, improving the cleanliness of the humidified air and further enhancing the performance of the humidifier 200.

[0076] Other configurations and operations of the humidifier 200 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0077] The embodiments of this utility model are described in detail below. It should be noted that the embodiments described below are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. In addition, unless otherwise specified, all reagents used in the following embodiments are commercially available or can be synthesized according to the methods described herein or known to others. For reaction conditions not listed, they are also readily available to those skilled in the art.

[0078] The composite humidifying filter element 100 and humidifier 200 of this utility model will be described through exemplary embodiments and comparative examples. The following tests will examine the performance of the humidifier 200 of the embodiments and comparative examples.

[0079] The humidifier 200 was run for 24 hours a day for 90 days. The discoloration of the water tank and the humidification capacity of the humidifier 200 were recorded.

[0080] Examples 1-4

[0081] Preparation of the second humidifying filter element 2: Wood pulp fiber is dispersed in water, and wet-strength agent polyethyleneimine and activated carbon powder are added and stirred evenly. The mass ratio of activated carbon powder to wood pulp fiber is detailed in Table 1. The above system is prepared into a mesh by a wet papermaking process, and then dried for later use.

[0082] Preparation of the composite humidifying filter element 100: Conventional hydrophilic nonwoven fabric is combined with the aforementioned second humidifying filter element 2. The bonding method involves adhering carbon cellulose paper and hydrophilic nonwoven fabric end-to-end using hot melt adhesive. In the resulting composite humidifying filter element 100 semi-finished product, the ratio of carbon cellulose paper to conventional hydrophilic nonwoven fabric is 1:9 (area ratio). The composite humidifying filter element 100 semi-finished product is then processed through folding, packaging, and other processes to prepare a cylindrical filter element.

[0083] The aforementioned cartridge filter element was installed in a commercially available humidifier of a certain brand, and the humidification capacity was tested. During prolonged use, it was observed whether there was any yellowing or foul odor in the water tank. Municipal tap water was used during operation. The test results are shown in Table 1.

[0084] Comparative Example 1 used commercially available filter cartridges, and the testing method was the same.

[0085] Table 1. Test results of composite humidifying filter element 100 with different activated carbon contents.

[0086]

[0087] The results showed that the composite humidifying filter element 100 containing carbon adsorbent could effectively inhibit yellowing of the water tank. Because yellowing was suppressed, users of the humidifier 200 could reduce the frequency of maintenance, and the water quality in the humidifier 200 was up to standard, ensuring good indoor air quality during use.

[0088] Example 5

[0089] Preparation of the second humidifying filter element 2: Disperse wood pulp fiber in water, add wet strength agent polyethyleneimine and 20-mesh ion exchange resin, stir evenly, the mass ratio of ion exchange resin to wood pulp fiber is 1:9, prepare the mesh by wet papermaking process, and dry it for later use.

[0090] Preparation of the composite humidifying filter element 100: Conventional hydrophilic nonwoven fabric is combined with the aforementioned ion-exchange resin-containing cellulose paper material. The combination method involves ultrasonic welding to connect the ion-exchange resin-containing cellulose paper material and the hydrophilic nonwoven fabric end-to-end. In the resulting composite humidifying filter element 100 semi-finished product, the ratio of ion-exchange resin-containing cellulose paper material to conventional hydrophilic nonwoven fabric is 1:1 (area ratio). The composite humidifying filter element 100 semi-finished product is then processed through folding, packaging, and other processes to prepare a cylindrical filter element.

[0091] The aforementioned cartridge filter element was installed in a commercially available humidifier of a certain brand, and the humidification capacity was tested. During prolonged use, it was observed whether there was any yellowing or foul odor in the water tank. Municipal tap water was used during operation. The test results are shown in Table 2.

[0092] Table 2 Test results of composite humidifying filter element 100 containing ion exchange resin

[0093]

[0094] The results show that the composite humidification filter 100 containing ion exchange resin adsorbent can effectively prolong the time of yellowing of the water tank, and the user of humidifier 200 can reduce the maintenance frequency of humidifier 200.

[0095] Example 6

[0096] Preparation of the second humidifying filter element 2: Wood pulp fiber is dispersed in water, and wet-strength agent polyethyleneimine and molecular sieve powder are added. The mixture is stirred evenly, with the mass ratio of molecular sieve powder to wood pulp fiber being 1:7. The filter element is then prepared into a mesh using a wet papermaking process and dried for later use.

[0097] Preparation of Composite Humidifying Filter Component 100: Conventional hydrophilic nonwoven fabric is combined with the aforementioned molecular sieve cellulose-containing paper material. The combination method involves connecting the molecular sieve cellulose-containing paper material and the hydrophilic nonwoven fabric end-to-end using stainless steel clips. In the resulting composite humidifying filter component 100 semi-finished product, the ratio of molecular sieve cellulose-containing paper material to conventional hydrophilic nonwoven fabric is 1:1 (area ratio). The composite humidifying filter component 100 semi-finished product is then processed through folding, packaging, and other processes to prepare a cylindrical filter element.

[0098] The aforementioned cartridge filter element was installed in a commercially available humidifier of a certain brand, and the humidification capacity was tested. During prolonged use, it was observed whether there was any yellowing or foul odor in the water tank. Municipal tap water was used during operation. The test results are shown in Table 3.

[0099] Table 3 Test results of composite humidifying filter element 100 containing molecular sieves

[0100]

[0101] The results showed that the composite humidifying filter element 100 containing molecular sieve adsorbent can effectively inhibit yellowing of the water tank. Because yellowing is suppressed, users of the humidifier 200 can reduce the frequency of maintenance, and the water quality in the humidifier 200 is up to standard, ensuring good indoor air quality during use.

[0102] Example 7

[0103] Preparation of the second humidifying filter element 2: Wood pulp fibers are dispersed in water, and wet-strength agent polyethyleneimine and activated carbon powder are added and stirred evenly. The mass ratio of activated carbon to wood pulp fibers is 1:2. The mixture is then formed into a web using a wet papermaking process and dried. The activated carbon-containing cellulose paper is cut into strips of specific sizes, and the strips are bonded to nylon Velcro using pressure-sensitive adhesive.

[0104] Preparation of the composite humidifying filter element 100: A commercially available humidifying filter material processed using a weaving technique (such as the material disclosed in patent JP2018159123) is prepared into a cylindrical filter element. Then, activated carbon cellulose paper is attached to the cylindrical filter element via nylon Velcro on its back to form a composite filter element. The area ratio of the activated carbon cellulose paper to the overall composite humidifying filter element 100 is 1:19 (area ratio).

[0105] The aforementioned cartridge filter element was installed in a commercially available humidifier of a certain brand, and the humidification capacity was tested. During prolonged use, it was observed whether there was any yellowing or foul odor in the water tank. Municipal tap water was used during operation. The test results are shown in Table 4.

[0106] Compared with Example 7, Comparative Example 2 did not include a second humidifying filter element 2, and instead used commercially available humidifying filter material (such as the material disclosed in patent JP2018159123) to prepare a cylindrical filter element. The measurement methods were the same.

[0107] Table 4 Test results of composite humidifying filter element 100 containing activated carbon

[0108]

[0109] The results showed that the composite filter element could effectively inhibit yellowing of the water tank. Because yellowing was suppressed, users of humidifier 200 could reduce the frequency of maintenance, and the water quality in humidifier 200 was up to standard, ensuring good indoor air quality during use.

[0110] Example 8

[0111] Preparation of composite humidifying filter element 100: An adsorbent (such as activated carbon powder) is dispersed in a solvent, and a binder, polyvinyl alcohol, and a surfactant, sodium dodecyl sulfonate, are added to prepare a slurry. The slurry is then applied to the surface of the first humidifying filter element 1 using a spraying process. After drying in an oven, a semi-finished product is obtained. In the semi-finished product, the adsorbent content accounts for 5% (by mass) of the first humidifying filter element 1. Subsequently, the semi-finished product is packaged into a cylindrical filter element with humidifying function through processes such as folding and winding.

[0112] The aforementioned cartridge filter element was installed in a commercially available humidifier of a certain brand, and the humidification capacity was tested. During prolonged use, it was observed whether there was any yellowing or foul odor in the machine's water tank. Municipal tap water was used during operation, and the test results are shown in Table 5.

[0113] Table 5 Test results of composite humidifying filter element 100 containing activated carbon

[0114]

[0115] The results show that the composite humidifying filter element 100 can effectively inhibit yellowing of the water tank. Because yellowing is inhibited, users of the humidifier 200 can reduce the maintenance frequency of the humidifier 200, and the water quality in the humidifier 200 is qualified, which can ensure the indoor air quality during use.

[0116] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0117] In the description of this utility model, "multiple" means two or more.

[0118] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0119] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A composite humidifying filter element, characterized in that, include: First humidifying filter element; The second humidifying filter element is connected to the first humidifying filter element. The second humidifying filter element includes a filter substrate and an adsorption element. The adsorption element includes an activated carbon element, an ion exchange resin element, a molecular sieve element, a metal-organic framework element, a porous silica gel element, or a porous ceramic element. When fluid flows through the second humidifying filter element, the adsorption element is suitable for adsorbing impurities to remove color and odor.

2. The composite humidifying filter element according to claim 1, characterized in that, The filter substrate includes nonwoven fabric, woven fabric, microporous membrane or cellulose paper.

3. The composite humidifying filter element according to claim 1, characterized in that, One side of the first humidifying filter element is connected to one side of the second humidifying filter element, and the first humidifying filter element and the second humidifying filter element are in the same filter structure.

4. The composite humidifying filter element according to claim 3, characterized in that, The first humidifying filter element is a cylindrical structure, and there are multiple second humidifying filter elements. The multiple second humidifying filter elements are respectively disposed at both ends of the first humidifying filter element in the axial direction, and one side of the second humidifying filter element in the thickness direction is connected to one end face of the first humidifying filter element in the axial direction.

5. The composite humidifying filter element according to claim 3, characterized in that, There are multiple first humidifying filter elements and multiple second humidifying filter elements, and the multiple first humidifying filter elements and multiple second humidifying filter elements are arranged alternately.

6. The composite humidifying filter element according to claim 3, characterized in that, The ratio of the area of ​​the first humidifying filter to the area of ​​the second humidifying filter is S, wherein S satisfies: 1≤S≤50.

7. The composite humidifying filter element according to claim 1, characterized in that, The first humidifying filter and the second humidifying filter are stacked, with the second humidifying filter located downstream of the fluid flow.

8. The composite humidifying filter element according to claim 7, characterized in that, The ratio of the thickness of the second humidifying filter element to the thickness of the composite humidifying filter element is D, where D satisfies: 0.1≤D≤0.

9.

9. The composite humidifying filter element according to claim 1, characterized in that, The second humidifying filter element is bonded or ultrasonically welded to the first humidifying filter element to form a single unit; or The second humidifying filter element is detachably connected to the first humidifying filter element.

10. The composite humidifying filter element according to any one of claims 1-9, characterized in that, The first humidifying filter element includes non-woven fabric, woven fabric, microporous membrane or cellulose paper; and / or The cross-sectional shape of the first humidifying filter element and / or the second humidifying filter element is serrated.

11. A humidifier, characterized in that, Includes a filter element, the filter element comprising: A composite humidifying filter element, wherein the composite humidifying filter element is the composite humidifying filter element according to any one of claims 1-10; An end cap is connected to the composite humidifying filter element, and the shape of the composite humidifying filter element is adapted to the shape of the end cap.

Images