阅读说明：本技术 用于空气调节设备的加湿膜及制备方法、空气调节设备 (Humidifying membrane for air conditioning equipment, preparation method and air conditioning equipment ) 是由 麦剑章 林勇强 冯翔敏 于 2019-11-27 设计创作，主要内容包括：本发明公开了加湿膜及制备方法、空气调节设备。加湿膜包括：依次层叠设置的亲水纤维层、导流纤维层和疏水纤维层,亲水纤维层的纤维之间构成沿亲水纤维层厚度方向延伸且贯穿亲水纤维层的第一贯通孔,导流纤维层的纤维之间构成沿导流纤维层厚度方向延伸且贯穿导流纤维层的第二贯通孔,疏水纤维层的纤维之间构成沿疏水纤维层厚度方向延伸且贯穿疏水纤维层的第三贯通孔,第一贯通孔、第二贯通孔和第三贯通孔彼此连通,第一贯通孔、第二贯通孔和第三贯通孔的平均孔径依次减小,第一贯通孔的孔隙密度P<Sub>1</Sub>、第二贯通孔的孔隙密度P<Sub>2</Sub>和第三贯通孔的孔隙密度P<Sub>3</Sub>满足P<Sub>1</Sub>≤P<Sub>2</Sub>≤P<Sub>3</Sub>。该加湿膜具有吸水速度快、吸水量大以及蒸发速率快的优点,使得加湿量显著提升。(The invention discloses a humidifying membrane, a preparation method thereof and air conditioning equipment. The humidifying membrane includes: the hydrophilic fiber layer, the flow guide fiber layer and the hydrophobic fiber layer are sequentially stacked, a first through hole extending along the thickness direction of the hydrophilic fiber layer and penetrating through the hydrophilic fiber layer is formed between fibers of the hydrophilic fiber layer, a second through hole extending along the thickness direction of the flow guide fiber layer and penetrating through the flow guide fiber layer is formed between fibers of the flow guide fiber layer, and fibers of the hydrophobic fiber layer are arranged in a stacking mannerA third through hole extending in the thickness direction of the hydrophobic fiber layer and penetrating the hydrophobic fiber layer, wherein the first through hole, the second through hole and the third through hole are communicated with each other, the average pore diameters of the first through hole, the second through hole and the third through hole are sequentially reduced, and the pore density P of the first through hole is 1 The pore density P of the second through hole 2 And the pore density P of the third through-hole 3 Satisfy P 1 ≤P 2 ≤P 3 . The humidifying membrane has the advantages of high water absorption speed, large water absorption capacity and high evaporation rate, so that the humidifying capacity is obviously improved.)

1. A humidifying membrane for an air conditioning apparatus, comprising:

a hydrophilic fiber layer, a flow guide fiber layer and a hydrophobic fiber layer which are sequentially arranged in a stacking way,

a first through hole extending along the thickness direction of the hydrophilic fiber layer and penetrating through the hydrophilic fiber layer is formed among fibers of the hydrophilic fiber layer, a second through hole extending along the thickness direction of the flow guide fiber layer and penetrating through the flow guide fiber layer is formed among fibers of the flow guide fiber layer, a third through hole extending along the thickness direction of the hydrophobic fiber layer and penetrating through the hydrophobic fiber layer is formed among fibers of the hydrophobic fiber layer,

the first through-hole, the second through-hole, and the third through-hole are communicated with each other, and an average pore diameter K of the first through-hole₁An average pore diameter K of the second through-holes₂And an average pore diameter K of the third through-holes₃Sequentially decreases, the pore density P of the first through holes in the hydrophilic fiber layer₁The pore density P of the second through holes in the flow guide fiber layer₂And a pore density P of the third through-holes in the hydrophobic fiber layer₃Satisfy P₁≤P₂≤P₃。

2. A humidifying membrane for an air-conditioning apparatus as claimed in claim 1, wherein the first through-hole has an average pore diameter K₁An average pore diameter K of the second through-holes₂And an average pore diameter K of the third through-holes₃Satisfy K₁ ³＝aK₂ ³+bK₃ ³+ c, wherein a is more than 0, b is more than 0, and c is more than or equal to 0.

3. A humidifying membrane for an air-conditioning apparatus as claimed in claim 2, wherein the first through-hole has an average pore diameter K₁An average pore diameter K of the second through-holes₂And an average pore diameter K of the third through-holes₃Satisfy K₁ ³＝K₂ ³+K₃ ³。

4. A humidifying membrane for an air-conditioning apparatus as claimed in claim 3, wherein the first through-hole has an average pore diameter K₁K is 3 mu m < K₁Less than or equal to 6 mu m, the pore density of the first through holes in the hydrophilic fiber layer is 200-500ppi, and the fiber diameter of the hydrophilic fiber layer is 800-1000 nm.

5. A humidifying membrane for an air-conditioning apparatus as defined in claim 3, wherein the second through-holes have an average pore diameter K₂Is 3-5 μm, the pore density of the second through holes in the flow guide fiber layer is 500-800ppi, and the diameter of the fibers in the flow guide fiber layer is 300-800 nm.

6. A humidifying membrane for an air-conditioning apparatus as defined in claim 3, wherein the third through-holes have an average pore diameter K₃2-3 μm, the pore density of the third through holes in the hydrophobic fiber layer is 800-1000ppi, and the diameter of the fibers of the hydrophobic fiber layer is 100-400 nm.

7. A humidifying membrane for an air-conditioning apparatus as claimed in claim 1, wherein the humidifying membrane satisfies at least one of the following conditions:

the thickness of the hydrophilic fiber layer is 10-50 μm;

the thickness of the guide fiber layer is 10-50 μm;

the thickness of the hydrophobic fiber layer is 10-50 μm.

8. A humidifying membrane for an air-conditioning apparatus as claimed in claim 1, wherein the material constituting the hydrophilic fibrous layer comprises a hydrophilic type polymer, the material constituting the flow-guiding fibrous layer comprises a hydrophilic type polymer and a hydrophobic type polymer, the material constituting the hydrophobic fibrous layer comprises a hydrophobic type polymer,

wherein the hydrophilic polymer comprises at least one of cellulose acetate, chitosan, polyacrylonitrile, ethylene/vinyl alcohol copolymer, polyamide and polyimide,

the hydrophobic polymer includes at least one of polyurethane, polystyrene, polyvinylidene fluoride-hexafluoropropylene, polyvinylidene fluoride-chlorotrifluoroethylene, and polyvinylidene fluoride-tetrafluoroethylene-perfluoromethyl vinyl ether.

9. A humidifying membrane for an air-conditioning apparatus as claimed in claim 1, wherein the humidifying membrane is quadrilateral, a first edge of the humidifying membrane is parallel to a water surface in a water tank, the fibers in the hydrophilic fiber layer, the fibers in the guide fiber layer and the fibers in the hydrophobic fiber layer are all arranged parallel to the first edge,

in the thickness direction of the humidifying membrane, the fibers in the hydrophilic fiber layer are arranged in a staggered mode, the fibers in the flow guide fiber layer are arranged in a staggered mode, and the fibers in the hydrophobic fiber layer are arranged in a staggered mode.

10. A humidifying membrane for an air conditioning apparatus as claimed in any one of claims 1 to 9, wherein the humidifying membrane has a zigzag structure, the humidifying membrane has a tooth height of 10 to 100mm, and the humidifying membrane has a tooth density of 150 to 500 teeth/m.

11. A method of making a humidifying membrane as claimed in any one of claims 1 to 10, wherein the hydrophilic fibrous layer, the flow directing fibrous layer and the hydrophobic fibrous layer are each formed using electrospinning.

12. The method of claim 11, wherein the electrospinning voltage is 10-50kV, the receiving distance is 10-30cm, and the perfusion rate of the spinning solution is 0.2-5 mL/h.

13. An air conditioning apparatus, characterized by comprising:

the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell;

the humidifying filter element is arranged in the shell and positioned between the air inlet and the air outlet, the humidifying filter element comprises an outer frame and a humidifying membrane, the outer frame is provided with an accommodating space, the humidifying membrane is arranged in the accommodating space, the humidifying membrane is the humidifying membrane as claimed in any one of claims 1 to 10, and the hydrophilic fiber layer in the humidifying membrane is arranged close to the air inlet;

a water tank disposed below the humidification filter, a portion of the humidification membrane being immersed in water in the water tank.

14. The air conditioning apparatus according to claim 13, characterized in that the air conditioning apparatus comprises an air conditioner, a purifier, or a humidifier.

Technical Field

The invention relates to the field of air conditioning equipment, in particular to a humidifying membrane for the air conditioning equipment, a preparation method and the air conditioning equipment.

Background

The humidifying membrane is a key element when the air conditioning equipment adjusts the humidity. The process of humidity conditioning in an air conditioning unit is generally: the humidifying membrane absorbs moisture, outside air enters the air conditioning equipment through the air inlet, then passes through the humidifying membrane, water on the humidifying membrane is vaporized, and the water is discharged to the outer side of the air conditioning equipment through the air outlet along with the air, so that the aim of humidifying the air is fulfilled.

However, currently, humidifying membranes for air conditioning equipment still need to be improved.

Disclosure of Invention

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

the inventor finds that the existing humidifying membrane is generally a non-woven fabric formed by common terylene and viscose fiber, however, the humidifying membrane has the problems of low water absorption speed, small water absorption amount and low evaporation rate, and the humidifying membrane has difficulty in increasing the humidifying amount.

The present invention aims to alleviate or solve at least to some extent at least one of the above mentioned problems.

In one aspect of the invention, a humidifying membrane for an air conditioning apparatus is presented. The humidifying membrane includes: the hydrophilic fiber layer, the flow guide fiber layer and the hydrophobic fiber layer are sequentially stacked, a first through hole which extends along the thickness direction of the hydrophilic fiber layer and penetrates through the hydrophilic fiber layer is formed among fibers of the hydrophilic fiber layer,a second through hole extending along the thickness direction of the guide fiber layer and penetrating through the guide fiber layer is formed among fibers of the guide fiber layer, a third through hole extending along the thickness direction of the hydrophobic fiber layer and penetrating through the hydrophobic fiber layer is formed among fibers of the hydrophobic fiber layer, the first through hole, the second through hole and the third through hole are communicated with each other, and the average aperture K of the first through hole₁An average pore diameter K of the second through-holes₂And an average pore diameter K of the third through-holes₃Sequentially decreases, the pore density P of the first through holes in the hydrophilic fiber layer₁The pore density P of the second through holes in the flow guide fiber layer₂And a pore density P of the third through-holes in the hydrophobic fiber layer₃Satisfy P₁≤P₂≤P₃. Therefore, the humidifying membrane has the advantages of high water absorption speed, large water absorption amount and high evaporation rate, so that the humidifying amount of the humidifying membrane is remarkably improved.

According to an embodiment of the invention, the average pore diameter K of the first through-hole₁An average pore diameter K of the second through-holes₂And an average pore diameter K of the third through-holes₃Satisfy K₁ ³＝aK₂ ³+bK₃ ³+ c, wherein a is more than 0, b is more than 0, and c is more than or equal to 0. Thereby, the humidification amount of the humidification film can be further increased.

According to an embodiment of the invention, the average pore diameter K of the first through-hole₁An average pore diameter K of the second through-holes₂And an average pore diameter K of the third through-holes₃Satisfy K₁ ³＝K₂ ³+K₃ ³. Thereby, the humidification amount of the humidification film can be further increased.

According to an embodiment of the invention, the average pore diameter K of the first through-hole₁K is 3 mu m < K₁Less than or equal to 6 mu m, the pore density of the first through holes in the hydrophilic fiber layer is 200-500ppi, and the fiber diameter of the hydrophilic fiber layer is 800-1000 nm. Thereby, it is advantageous to significantly increase the humidification amount of the humidification film.

According to an embodiment of the invention, the average pore diameter K of the second through holes₂Is 3-5 μm, the pore density of the second through holes in the flow guide fiber layer is 500-800ppi, and the diameter of the fibers in the flow guide fiber layer is 300-800 nm. Thereby, it is advantageous to significantly increase the humidification amount of the humidification film.

According to an embodiment of the invention, the third through holes have an average hole diameter K₃2-3 μm, the pore density of the third through holes in the hydrophobic fiber layer is 800-1000ppi, and the diameter of the fibers of the hydrophobic fiber layer is 100-400 nm. Thereby, it is advantageous to significantly increase the humidification amount of the humidification film.

According to an embodiment of the present invention, the humidifying membrane satisfies at least one of the following conditions: the thickness of the hydrophilic fiber layer is 10-50 μm; the thickness of the guide fiber layer is 10-50 μm; the thickness of the hydrophobic fiber layer is 10-50 μm. Thereby, it is advantageous to significantly increase the humidification amount of the humidification film.

According to an embodiment of the present invention, a material constituting the hydrophilic fiber layer includes a hydrophilic type polymer, a material constituting the guide fiber layer includes a hydrophilic type polymer and a hydrophobic type polymer, and a material constituting the hydrophobic fiber layer includes a hydrophobic type polymer, wherein the hydrophilic type polymer includes at least one of cellulose acetate, chitosan, polyacrylonitrile, ethylene/vinyl alcohol copolymer, polyamide, and polyimide, and the hydrophobic type polymer includes at least one of polyurethane, polystyrene, polyvinylidene fluoride-hexafluoropropylene, polyvinylidene fluoride-chlorotrifluoroethylene, and polyvinylidene fluoride-tetrafluoroethylene-perfluoromethylvinylether. Therefore, the three fiber layers are matched with each other, so that the humidifying membrane realizes excellent one-way water guiding, moisture guiding and quick-drying performances.

According to the embodiment of the invention, the humidifying membrane is quadrilateral, the first edge of the humidifying membrane is parallel to the water surface in the water tank, the fibers in the hydrophilic fiber layer, the fibers in the flow guide fiber layer and the fibers in the hydrophobic fiber layer are all arranged in parallel to the first edge, the fibers in the hydrophilic fiber layer, the fibers in the flow guide fiber layer and the fibers in the hydrophobic fiber layer are arranged in a staggered mode in the thickness direction of the humidifying membrane, and the fibers in the hydrophilic fiber layer and the fibers in the flow guide fiber layer are arranged in a staggered mode. From this, hydrophilic fibrous layer, water conservancy diversion fibrous layer and hydrophobic fibrous layer can form respectively and do benefit to the first perforating hole, second perforating hole and the third perforating hole of steam transmission, and simultaneously on the perpendicular to surface of water direction, hydrophilic fibrous layer, water conservancy diversion fibrous layer and hydrophobic fibrous layer can form respectively and do benefit to the capillary channel who absorbs water, do benefit to the humidifying membrane and absorb moisture from the basin.

According to the embodiment of the invention, the humidifying membrane has a sawtooth structure, the tooth height of the humidifying membrane is 10-100 mm, and the tooth density of the humidifying membrane is 150-500 teeth/m. The humidifying membrane has a zigzag structure, so that the contact area between the humidifying membrane and air can be increased, the humidifying amount of the humidifying membrane can be increased, and the humidifying amount of the humidifying membrane can be further increased by respectively setting the tooth height and the tooth density of the humidifying membrane within the above ranges.

In another aspect of the invention, the invention provides a method of making a humidifying membrane as hereinbefore described. According to an embodiment of the present invention, the hydrophilic fiber layer, the guide fiber layer, and the hydrophobic fiber layer are respectively formed using electrospinning. The fiber layer formed by the electrostatic spinning method is large in specific surface area, fine in fiber diameter and strong in wicking effect, moisture can be rapidly transmitted in the three fiber layers, the moisture can be rapidly evaporated when being transmitted to the hydrophobic fiber layer, excellent one-way water guiding, moisture guiding and quick-drying performances are achieved, and the humidifying quantity of the humidifying membrane is remarkably improved.

According to the embodiment of the invention, the voltage of the electrostatic spinning is 10-50kV, the receiving distance is 10-30cm, and the perfusion speed of the spinning solution is 0.2-5 mL/h. Therefore, the hydrophilic fiber layer with the first through hole, the flow guide fiber layer with the second through hole and the hydrophobic fiber layer with the third through hole are formed.

In another aspect of the present invention, an air conditioning apparatus is provided. According to an embodiment of the present invention, the air conditioning apparatus includes: the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell; the humidifying filter element is arranged in the shell and positioned between the air inlet and the air outlet, the humidifying filter element comprises an outer frame and a humidifying membrane, the outer frame is provided with an accommodating space, the humidifying membrane is arranged in the accommodating space, the humidifying membrane is the humidifying membrane, and the hydrophilic fiber layer in the humidifying membrane is arranged close to the air inlet; a water tank disposed below the humidification filter, a portion of the humidification membrane being immersed in water in the water tank. Thus, the air conditioning apparatus has all of the features and advantages of the humidification membrane described above, and will not be described in detail herein. In general, the air conditioning apparatus has a good humidifying effect.

According to an embodiment of the present invention, the air conditioning apparatus includes an air conditioner, a purifier, or a humidifier. Therefore, the air conditioning equipment has good humidifying effect.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows a schematic diagram of the structure of a humidifying membrane according to one embodiment of the present invention;

FIG. 2 shows a schematic view of the arrangement of fibers in a humidifying membrane according to one embodiment of the present invention;

FIG. 3 shows a schematic diagram of the structure of a humidifying membrane according to one embodiment of the present invention;

FIG. 4 shows a schematic cross-sectional view taken along section A-A' of FIG. 3;

fig. 5 shows a schematic configuration diagram of an air conditioning apparatus according to an embodiment of the present invention;

fig. 6 shows a schematic view of a humidifying filter element according to an embodiment of the present invention.

Description of reference numerals:

100: a humidifying membrane; 110: a hydrophilic fibrous layer; 120: a flow-guiding fiber layer; 130: a hydrophobic fiber layer; 111: fibers of the hydrophilic fiber layer; 121: guiding the fibers of the fiber layer; 131: fibers of the hydrophobic fiber layer; 200: a humidifying filter element; 210: an outer frame; 300: a housing; 310: an air inlet; 320: an air outlet; 400: a water tank; 10: a first through hole; 20: a second through hole; 30: a third through hole; 140: and (4) teeth.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In one aspect of the invention, a humidifying membrane for an air conditioning apparatus is presented. According to an embodiment of the present invention, referring to fig. 1, a humidifying membrane 100 includes: a hydrophilic fiber layer 110, a flow guiding fiber layer 120 and a hydrophobic fiber layer 130, which are sequentially stacked, referring to fig. 2 (fig. 2 can be seen as a schematic diagram of the humidifying membrane of fig. 1 rotated by 90 degrees), a first through hole 10 extending along the thickness direction of the hydrophilic fiber layer 110 and penetrating through the hydrophilic fiber layer 110 is formed between fibers 111 of the hydrophilic fiber layer, a second through hole 20 extending along the thickness direction of the flow guiding fiber layer 120 and penetrating through the flow guiding fiber layer 120 is formed between fibers 121 of the flow guiding fiber layer, a third through hole 30 extending along the thickness direction of the hydrophobic fiber layer 130 and penetrating through the hydrophobic fiber layer 130 is formed between fibers 131 of the hydrophobic fiber layer, the first through hole 10, the second through hole 20 and the third through hole 30 are communicated with each other, and the average pore diameter K of the first through hole 10 is equal to the average pore₁The average diameter K of the second through-holes 20₂And the average pore diameter K of the third through-holes 30₃The pore density P of the first through holes 10 in the hydrophilic fiber layer 110 is reduced in turn₁The pore density P of the second through holes 20 in the flow guiding fiber layer 120₂And the pore density P of the third through-holes 30 in the hydrophobic fiber layer 130₃Satisfy P₁≤P₂≤P₃. Therefore, the humidifying membrane has the advantages of high water absorption speed, large water absorption amount and high evaporation rate, so that the humidifying amount of the humidifying membrane is remarkably improved.

It should be noted that the plane of the hydrophilic fiber layer may be the surface close to the side of the guide fiber layer, or the surface far from the side of the guide fiber layer. The plane of the flow guide fiber layer can be the surface close to one side of the hydrophilic fiber layer or the surface close to one side of the hydrophobic fiber layer. The plane of the hydrophobic fiber layer can be the surface close to one side of the flow guide fiber layer or the surface far away from one side of the flow guide fiber layer.

According to the embodiment of the invention, firstly, the humidifying membrane is composed of three layers of a hydrophilic fiber layer, a flow guide fiber layer and a hydrophobic fiber layer, moisture can be rapidly transmitted in the three fiber layers, and the moisture can be rapidly evaporated when being transmitted to the hydrophobic fiber layer, so that excellent unidirectional water guiding, moisture guiding and quick-drying performances are realized. Then, the average pore diameters of the first through-hole, the second through-hole and the third through-hole are sequentially decreased, and the pore density P of the first through-hole is decreased₁The pore density P of the second through hole₂And the pore density P of the third through-hole₃Satisfy P₁≤P₂≤P₃The multi-stage communication pore passages from large to small can be formed in the humidifying membrane, the multi-stage communication pore passages have a multi-stage branching structure similar to a plant transpiration effect, and the maximum substance transmission principle of the Murray law is followed, so that the humidifying membrane has self-driven directional water guide, quick moisture absorption and release and excellent quick drying performance, and the humidifying quantity of the humidifying membrane is remarkably improved.

The following describes the respective structures of the humidifying membrane in detail according to the embodiments of the present invention:

according to an embodiment of the present invention, the average pore diameter K of the first through-hole 10₁The average diameter K of the second through-holes 20₂And the average pore diameter K of the third through-holes 30₃Satisfy K₁ ³＝aK₂ ³+bK₃ ³+ c, wherein a is more than 0, b is more than 0, and c is more than or equal to 0. When the humidifying membrane works, wind sequentially passes through the hydrophilic fiber layer, the flow guide fiber layer and the hydrophobic fiber layer, when the wind passes through the humidifying membrane, the moisture absorbed by the humidifying membrane is vaporized into water vapor, so that the water vapor is evaporated into the air sequentially through the large holes, the middle holes and the small holes along with the wind (the water vapor transmission path is shown as a path 1 in figure 2, and only one path for water vapor transmission is shown in figure 2), and the average pore diameters of the holes in the hydrophilic fiber layer, the flow guide fiber layer and the hydrophobic fiber layer are regulated according to a certain ruleThe law reduces in proper order for steam can realize good transmission between the three-layer fibrous layer, makes the speed of absorbing water, the volume of absorbing water and the evaporation rate phase-match of humidification membrane, with the maximize transmission that realizes steam, thereby is showing the humidification volume that promotes the humidification membrane.

According to a preferred embodiment of the invention, the mean pore diameter K of the first through-going hole 10₁The average diameter K of the second through-holes 20₂And the average pore diameter K of the third through-holes 30₃Satisfy K₁ ³＝K₂ ³+K₃ ³. From this for steam can realize better transmission between the three-layer fibrous layer, makes the speed of absorbing water, the volume of absorbing water and the evaporation rate of humidifying membrane match more, with the maximize transmission that realizes steam, further promotes the humidification volume of humidifying membrane.

According to the embodiment of the present invention, the average pore diameter K of the first through-holes 10 in the hydrophilic fiber layer 110₁Can be 3 mu m < K₁Less than or equal to 6 μm, such as 3.3 μm, 4 μm, 4.2 μm, 5 μm, 5.1 μm, 5.6 μm, 6 μm, the pore density of the first through-going openings 10 in the hydrophilic fiber layer 110 may be 200-500ppi, such as 200ppi, 300ppi, 400ppi, 500ppi, the diameter D of the fibers 111 of the hydrophilic fiber layer₁(refer to FIG. 2) may be 800-1000nm, such as 800nm, 900nm, 1000 nm. Thereby, a significant increase in the humidification amount of the humidifying membrane is facilitated.

According to the embodiment of the present invention, the average diameter K of the second through holes 20 in the guide fiber layer 120₂May be 3-5 μm, such as 3 μm, 4 μm, 5 μm, the pore density of the second through holes 20 in the flow guiding fiber layer 120 may be 500-800ppi, such as 500ppi, 600ppi, 700ppi, 800ppi, the diameter D of the fibers 121 of the flow guiding fiber layer₂(refer to FIG. 2) may be 300-800nm, such as 300nm, 400nm, 500nm, 600nm, 700nm, 800 nm. Thereby, a significant increase in the humidification amount of the humidifying membrane is facilitated.

According to the embodiment of the present invention, the average pore diameter K of the third through holes 30 in the hydrophobic fiber layer 130₃May be 2 to 3 μm, such as 2 μm, 2.2 μm, 2.5 μm, 3 μm, the pore density of the third through-holes 30 in the hydrophobic fiber layer 130 may be 800-1000ppi, such as 800ppi, 900ppi, 1000ppi, of the hydrophobic fiber layerDiameter D of fiber 131₃(refer to FIG. 2) may be 100-400nm, such as 100nm, 200nm, 300nm, 400 nm. Thereby, a significant increase in the humidification amount of the humidifying membrane is facilitated.

According to the embodiment of the invention, through holes in the hydrophilic fiber layer, the flow guide fiber layer and the hydrophobic fiber layer are matched with one another, and the pore density is matched with one another, so that multi-stage communication pore channels from large to small can be formed in the humidifying membrane, the humidifying membrane has a multi-stage branching structure similar to a plant transpiration effect, and the maximum substance transmission principle of the Murray law is followed, so that the humidifying membrane has self-driven directional water guide, quick moisture absorption and release and excellent quick drying performance, the humidifying quantity of the humidifying membrane is obviously improved, the fiber diameter in the three fiber layers is small, the specific surface area of the fiber layers is large, the moisture can be quickly transmitted and evaporated in the three fiber layers, the humidifying membrane realizes unidirectional water guide and quick drying performance, and the humidifying quantity is improved.

The average pore diameter of the three through-holes satisfies K₁ ³＝K₂ ³+K₃ ³The pore density satisfies P₁≤P₂≤P₃In the case where the above relationship is satisfied, a specific size may be selected from the above range.

According to an embodiment of the present invention, the thickness of the hydrophilic fiber layer 110 may be 10-50 μm, such as 10 μm, 20 μm, 30 μm, 40 μm, 50 μm. Thus, the hydrophilic fiber layer has a suitable thickness, which is advantageous for increasing the humidification amount of the humidifying membrane.

According to an embodiment of the present invention, the thickness of the flow guiding fiber layer 120 may be 10-50 μm, such as 10 μm, 20 μm, 30 μm, 40 μm, 50 μm. Therefore, the diversion fiber layer has proper thickness, which is beneficial to increasing the humidifying quantity of the humidifying membrane.

According to an embodiment of the present invention, the thickness of the hydrophobic fiber layer 130 may be 10-50 μm, such as 10 μm, 20 μm, 30 μm, 40 μm, 50 μm. Thus, the hydrophobic fiber layer has a suitable thickness, which facilitates an increase in the amount of humidification of the humidifying membrane.

According to an embodiment of the present invention, the material constituting the hydrophilic fiber layer may include a hydrophilic type polymer, the material constituting the fluid guiding fiber layer may include a hydrophilic type polymer and a hydrophobic type polymer, and the material constituting the hydrophobic fiber layer may include a hydrophobic type polymer, wherein the hydrophilic type polymer may include at least one of cellulose acetate, chitosan, polyacrylonitrile, ethylene/vinyl alcohol copolymer, polyamide, and polyimide, and the hydrophobic type polymer may include at least one of polyurethane, polystyrene, polyvinylidene fluoride-hexafluoropropylene, polyvinylidene fluoride-chlorotrifluoroethylene, and polyvinylidene fluoride-tetrafluoroethylene-perfluoromethylvinylether. Therefore, the three fiber layers are respectively composed of the hydrophilic material, the hydrophobic material and the hydrophobic material, the three fiber layers are matched with each other, when moisture is transmitted to the surface of the flow guide fiber layer from the hydrophilic fiber layer, the flow guide fiber layer has certain hydrophobicity, the moisture can be rapidly transmitted along the second through hole, after the moisture is transmitted to the surface of the hydrophobic fiber layer, the rapid evaporation of the moisture can be realized due to the strong hydrophobicity of the hydrophobic fiber layer, and the humidification film achieves excellent one-way water guiding, moisture guiding and quick-drying performances. According to the embodiment of the invention, the fibers in the flow-guiding fiber layer can be formed by melting and mixing the hydrophilic polymer and the hydrophobic polymer.

The arrangement of the fibers in the hydrophilic fiber layer, the flow-guiding fiber layer, and the hydrophobic fiber layer is not particularly limited as long as the first through-hole, the second through-hole, and the third through-hole described above can be formed among the fibers in each layer, and the average pore diameter and the pore density of the pores respectively satisfy the relationship described above. For example, according to an embodiment of the present invention, the humidifying membrane may be a quadrilateral, a first side (an inward side of a vertical paper in fig. 2) of the humidifying membrane is parallel to a water surface in the water tank, the fibers in the hydrophilic fiber layer 110, the fibers in the guiding fiber layer 120, and the fibers in the hydrophobic fiber layer 130 are all arranged parallel to the first side, the fibers in the hydrophilic fiber layer 110, the fibers in the guiding fiber layer 120, and the fibers in the hydrophobic fiber layer 130 are arranged in a staggered manner in a thickness direction of the humidifying membrane. From this, hydrophilic fibrous layer, water conservancy diversion fibrous layer and hydrophobic fibrous layer can form respectively and do benefit to the first perforating hole, second perforating hole and the third perforating hole of steam transmission, and simultaneously on the perpendicular to surface of water direction, hydrophilic fibrous layer, water conservancy diversion fibrous layer and hydrophobic fibrous layer can form respectively and do benefit to the capillary channel who absorbs water, do benefit to the humidifying membrane and absorb moisture from the basin.

According to an embodiment of the present invention, referring to fig. 3, the humidifying membrane 100 has a zigzag structure, i.e., the humidifying membrane includes a plurality of teeth 140 (refer to fig. 4), the height of the teeth (H shown in fig. 4) of the humidifying membrane may be 10 to 100mm, such as 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, and the density of the teeth of the humidifying membrane may be 150 to 500 teeth/m, such as 150 teeth/m, 200 teeth/m, 250 teeth/m, 300 teeth/m, 350 teeth/m, 400 teeth/m, 450 teeth/m, 500 teeth/m. The humidifying membrane has a zigzag structure, the contact area of the humidifying membrane and air can be increased, the humidifying amount of the humidifying membrane is improved, and the tooth height and the tooth density of the humidifying membrane are respectively set in the ranges, so that the humidifying membrane is ensured to have a large area, meanwhile, the wind resistance is not too large, and the humidifying amount of the humidifying membrane can be further improved.

In another aspect of the invention, the invention provides a method of making the humidification membrane described above. According to an embodiment of the present invention, the hydrophilic fiber layer, the guide fiber layer, and the hydrophobic fiber layer may be respectively formed using electrospinning. The fiber layer formed by the electrostatic spinning method is large in specific surface area, fine in fiber diameter and strong in wicking effect, and a first through hole, a second through hole and a third through hole can be formed in the three fiber layers respectively, so that moisture can be rapidly transmitted in the three fiber layers, the moisture can be rapidly evaporated when being transmitted to the hydrophobic fiber layer, excellent one-way water guiding, moisture guiding and quick-drying performances are realized, the humidification quantity of the humidifying membrane is remarkably improved, and the electrostatic spinning method has the advantages of being efficient and capable of continuously preparing the fiber layers.

According to the embodiment of the invention, the humidifying membrane can be obtained by firstly depositing a hydrophilic fiber layer on the receiving substrate by using an electrostatic spinning method, then depositing a flow guide fiber layer on the side of the hydrophilic fiber layer far away from the substrate by using the electrostatic spinning method, then depositing a hydrophobic fiber layer on the side of the flow guide fiber layer far away from the hydrophilic fiber layer by using the electrostatic spinning method, and finally removing the three fiber layers from the receiving substrate in a whole.

According to the embodiment of the present invention, the voltage of electrospinning may be 10 to 50kV, the receiving distance may be 10 to 30cm, and the perfusion rate of the spinning solution may be 0.2 to 5 mL/h. Thus, under the above conditions, it is advantageous to form the hydrophilic fiber layer having the first through-holes, the fluid-directing fiber layer having the second through-holes, and the hydrophobic fiber layer having the third through-holes.

In another aspect of the present invention, an air conditioning apparatus is provided. According to an embodiment of the present invention, referring to fig. 5, the air conditioning apparatus includes: the humidifying device comprises a shell 300, a humidifying filter element 200 and a water tank 400, wherein an air inlet 310 and an air outlet 320 are arranged on the shell 300, the humidifying filter element 200 is arranged in the shell 300 and is positioned between the air inlet 310 and the air outlet 320, the humidifying filter element 200 comprises an outer frame 210 and a humidifying membrane 100, the outer frame 210 is provided with an accommodating space, the humidifying membrane 100 is arranged in the accommodating space (refer to fig. 6), the humidifying membrane 100 is the humidifying membrane described above, a hydrophilic fiber layer in the humidifying membrane is arranged close to one side of the air inlet 310, the water tank 400 is arranged below the humidifying filter element 200, and a part of the humidifying membrane 100 is immersed in water in the water tank 400. Thus, the air conditioning apparatus has all of the features and advantages of the humidification membrane described above, and will not be described in detail herein. In general, the air conditioning apparatus has a good humidifying effect.

According to the embodiment of the present invention, referring to fig. 5, the humidifying membrane in the humidifying filter 200 draws moisture from the water tank 400, the wind enters the housing 300 from the wind inlet 310, passes through the humidifying membrane in the direction of the arrow in the figure, and then is discharged from the wind outlet 320, when the wind passes through the humidifying membrane, the moisture in the humidifying membrane is vaporized and discharged to the outside of the housing 300 along with the wind, so as to achieve the purpose of humidifying the air. According to the embodiment of the invention, the humidifying membrane comprises a hydrophilic fiber layer, a flow guide fiber layer and a hydrophobic fiber layer which are sequentially stacked, the average pore diameter of through holes in the three fiber layers is sequentially reduced according to a certain rule, and the pore density satisfies P₁≤P₂≤P₃The multi-stage humidification membrane can form a multi-stage communication pore passage from large to small in the humidification membrane, has a multi-stage branching structure similar to a plant transpiration effect, follows the maximum substance transmission principle of the Murray law, enables the humidification membrane to have self-driven directional water guide, quick moisture absorption and release and excellent quick drying performance, obviously improves the humidification quantity of the humidification membrane, and further enables air conditioning equipment to have a good humidification effect.

The specific type of the air conditioning device is not particularly limited, and for example, the air conditioning device may include an air conditioner, a purifier, or a humidifier according to an embodiment of the present invention. Therefore, the air conditioning equipment has good humidifying effect.

According to an embodiment of the present invention, the air conditioning equipment may further include structures and components that conventional air conditioning equipment must have, for example, taking an air conditioner as an example, the air conditioning equipment may include an indoor unit and an outdoor unit, the humidification filter element may be disposed in the indoor unit of the air conditioner, and both the indoor unit and the outdoor unit may have the structures and components of the conventional air conditioner, for example, the indoor unit may include a panel, an air deflector, a wind wheel, a filter screen, a water pan, a face frame, a fan, a heat exchanger, and the like, which are not described herein again.

The invention will now be illustrated by means of specific examples, which are provided for illustration only and should not be construed as limiting the scope of the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.