CN112452068A - High-efficiency low-resistance antibacterial repeatedly-washable air conditioner filtering assembly and application thereof - Google Patents
High-efficiency low-resistance antibacterial repeatedly-washable air conditioner filtering assembly and application thereof Download PDFInfo
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a high-efficiency low-resistance antibacterial repeatedly-washable air conditioner filtering assembly and application thereof, wherein the air conditioner filtering assembly comprises a high-efficiency low-resistance antibacterial filtering layer and a rhombic grid filtering net layer; the high-efficiency low-resistance antibacterial filter layer consists of an antibacterial mildew-proof filter supporting layer and a high-efficiency low-resistance static cotton filter layer; the surface of the diamond grid filter screen layer is coated with nano silver paint; the rhombus grid filter screen layer is composed of a plurality of aluminum strips which are longitudinally arranged and distributed, each aluminum strip which is longitudinally arranged is in a wave shape, and a plurality of rhombus grids which are connected end to end are formed between two adjacent aluminum strips; the side length of the rhombic grid is 5-7 mm; the depth of the rhombic grids is 7-8 mm; the width of the aluminum strip is 1-1.5mm, and the thickness of the aluminum strip is 0.5-1 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height of the wave shape is 18-22mm, and the wavelength is 20-25 mm. The air conditioner filtering component can realize the integration of functions such as high efficiency, low resistance filtering, antibiosis, repeated flushing, low cost maintenance and the like.
Description
Technical Field
The invention relates to an air purification material and an application technology thereof, in particular to a high-efficiency, low-resistance, antibacterial and repeatedly-washable air conditioner filter assembly and an application thereof in a central air conditioner and a household air conditioner.
Background
In recent years, due to the development of human society and industry, the total emission amount of atmospheric pollutants is high for years, and especially the concentration of particulate matters such as PM2.5 and the like is seriously exceeded, so that the sustainable development of national social economy and the life health of people are seriously influenced.
In order to improve the air quality in the living environment, air purifiers are available in the market, the environment can be effectively improved as long as the air purifiers are arranged indoors, but common air purifiers are additionally provided with equipment and are expensive, most units and families cannot bear the air purifiers, the air purifiers are high in power consumption and high in purification efficiency, some equipment is accompanied with ozone, and a plurality of office units and families with common income are difficult to bear increased equipment cost and electricity charges.
Meanwhile, air conditioners are already popularized in office and home environments earlier, and air filter screens or/and cotton filter elements are designed on the air conditioners and are used for filtering larger air dust particles sent into rooms so as to achieve high quality of indoor air. After the existing air conditioner is used for a period of time, certain dust can be collected on an air conditioner filter screen or/and a cotton filter element, and under the condition of certain temperature and humidity, if the existing air conditioner is not cleaned in time, the dust collected on the air conditioner filter screen or/and the cotton filter element is too much, bacteria are easily bred, secondary pollution of indoor air is caused, and the quality of the indoor air is influenced. In addition, the air conditioner filter screen or/and the cotton filter core gather too much dust and can cause the mesh to block and cause the ventilation to be not smooth, will increase the air running resistance of the air intake while the air conditioner operates, lead to the increase of energy consumption, influence the heating and refrigerating effect, is unfavorable for the whole operation of the air conditioner; the increase of wind resistance also causes noise problems, and reduces the user's sense of embodiment. The cotton filter element is a consumable material, has large wind resistance and poor durability, and needs to be replaced after being continuously used for 3 months under the condition that the wind resistance is more than 50Pa, so the maintenance cost is high. Therefore, how to modify and add the existing air conditioner filter assembly to realize the function integration effects of high efficiency, low resistance filtration, antibiosis, low cost maintenance and the like is a blank of the current air conditioner market.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an efficient low-resistance antibacterial repeatedly-flushing air conditioner filter assembly.
The invention also aims to provide the air conditioning equipment with high efficiency, low resistance, antibiosis and low cost maintenance, which particularly comprises a detachable cleaned air conditioning filter assembly arranged on an air outlet of the air conditioning equipment, wherein the air conditioning filter assembly adopts the air conditioning filter assembly with high efficiency, low resistance, antibiosis and repeated flushing.
One of the purposes of the invention is realized by adopting the following technical scheme: a high-efficiency low-resistance antibacterial repeatedly-washable air conditioner filtering component comprises a high-efficiency low-resistance antibacterial filtering layer and a diamond-shaped grid filtering net layer which are sequentially arranged from filtering-in direction to filtering-out direction and have the same projection area;
the high-efficiency low-resistance antibacterial filter layer consists of an antibacterial mildew-proof filter supporting layer and a high-efficiency low-resistance electrostatic cotton filter layer compounded on one surface of the antibacterial mildew-proof filter supporting layer, wherein the antibacterial mildew-proof filter supporting layer is a polymer fiber filament layer with antibacterial mildew-proof nano particles mixed in fiber molecules, and the diameter of the filament is 2-4 mu m; the high-efficiency low-resistance static cotton filter layer is a needle-punched non-woven fabric with the gram weight of 30-50g/m2(ii) a The needle-punched non-woven fabric is an electrostatic needle-punched non-woven fabric subjected to high-voltage corona discharge treatment;
the surface of the diamond grid filter screen layer is coated with nano silver paint; the rhombus grid filter screen layer is composed of a plurality of aluminum strips which are longitudinally arranged and distributed, each aluminum strip which is longitudinally arranged is in a wave shape, and a plurality of rhombus grids which are connected end to end are formed between two adjacent aluminum strips; the side length of the rhombic grid is 5-7 mm; the depth of the rhombic grids is 7-8 mm; the width of the aluminum strip is 1-1.5mm, and the thickness of the aluminum strip is 0.5-1 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height of the wave shape is 18-22mm, and the wavelength is 20-25 mm.
Further, the side length of the rhombic grid is 6 mm; the depth of the rhombic grids is 6 mm; the width of the aluminum strip is 1.5mm, and the thickness of the aluminum strip is 0.5 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height of the wave shape is 20mm, and the wavelength is 25 mm.
Furthermore, the air conditioner filtering component also comprises a detachable frame used for coating the peripheries of the high-efficiency low-resistance antibacterial filtering layer and the diamond-shaped grid filtering net layer; the detachable frame is installed at an air outlet/air inlet of the air conditioning equipment through a buckle structure.
Further, the detachable frame comprises a first flexible bag frame and a second flexible bag frame; the contact positions of the first flexible packaging frame and the second flexible packaging frame are assembled and disassembled through joggling.
Furthermore, the average particle diameter of the antibacterial and mildewproof nano particles is 20-80 nm; the antibacterial and mildewproof nano particles are selected from one or a mixture of several of nano silver particles, graphene particles, zinc oxide particles, titanium dioxide particles or silver oxide particles.
Further, the polymer fiber is one or a mixture of polylactic acid, polyvinyl butyral, polyvinyl alcohol, polyacrylonitrile or polyurethane fiber.
Furthermore, the voltage in the high-voltage corona discharge electric field is 30-60KV, and the discharge time is 1-10 s.
Further, the preparation method of the high-efficiency low-resistance antibacterial filter layer comprises the following steps:
a. preparation of PM2.5 antibacterial and mildewproof polymer solution
The weight percentages are as follows: 20-28% of polymer, 65-75% of solvent and 0.1-3% of antibacterial and mildewproof nano particle, mixing the polymer, the solvent and the antibacterial and mildewproof nano particle, heating to 35-90 ℃, and mechanically stirring for 1-3 hours to obtain a polymer solution containing the antibacterial and mildewproof nano particle;
b. preparation of PM2.5 antibacterial mildew-proof filtering supporting layer
Injecting a polymer solution containing antibacterial and mildewproof nano particles into a centrifugal spinning tank with a spinning hole aperture of 100-6000 mu m, increasing the rotating speed of the spinning tank to 4000-6000r/min at a speed of 50r/s, forming continuous filaments with the diameter of 2-4 mu m by the polymer solution containing the antibacterial and mildewproof nano particles under the action of centrifugal force, and allowing the filaments to fall and deposit on the surface of a conventional lapping screen to form an antibacterial and mildewproof filtering supporting layer;
c. preparation of PM2.5 high-efficiency low-resistance electrostatic cotton filter layer
Polypropylene short fibers are subjected to opening, mixing, carding and lapping in sequence to prepare a polypropylene fiber web, and then the polypropylene fiber web is reinforced into a polypropylene fiber web with the gram weight of 30-50g/m through multiple needling by a needling machine2The needle punched non-woven fabric is then passed through one or several continuous high voltage corona discharge electric fields with voltage of 30-60KV and discharge time of 1-10s to obtain high efficiency low resistance static cotton filter layer;
d. ultrasonic composite preparation of high-efficiency low-resistance antibacterial and mildewproof filtering material
Thermally bonding the antibacterial mildew-proof filtering supporting layer and the high-efficiency low-resistance electrostatic cotton filtering layer by an ultrasonic compounding machine to obtain the high-efficiency low-resistance antibacterial mildew-proof filtering material, wherein the ultrasonic compounding time is 1.5-3s, and the frequency is 15-25 kHz;
e. preparation of high-efficiency low-resistance antibacterial filter layer
The high-efficiency low-resistance antibacterial mildew-proof filtering material is cut into the size and specification required by the air conditioner filter screen.
Further, the polymer is selected from one or a mixture of polyvinyl butyral, polyvinyl alcohol or polyurethane fiber; the solvent is one of water, ethanol, dimethylformamide, dichloromethane or acetone.
The second purpose of the invention is realized by adopting the following technical scheme: the air conditioning equipment comprises detachable and washable air conditioning filter components which are arranged on an air inlet and an air outlet of the air conditioning equipment, wherein the air conditioning filter components adopt the efficient low-resistance antibacterial repeatedly-washable air conditioning filter components. The air conditioning equipment is mainly equipment such as domestic air conditioner host computer or central air conditioning, new trend system, and this application air conditioner filter assembly can realize dismantling to wash the used repeatedly function many times, and air conditioner filter assembly filtration efficiency, ventilation resistance after the washing, the efficiency of disinfecting do not have very big change.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention preferably selects the high-efficiency low-resistance PM2.5 antibacterial and mildewproof filtering material suitable for central air conditioners and household air conditioners, designs the structure of the air conditioner filtering screen, makes the high-efficiency low-resistance PM2.5 antibacterial and mildewproof filtering material into a high-efficiency low-resistance antibacterial filtering layer, combines a diamond-shaped grid filtering screen layer as a supporting layer, and arranges the combined air conditioner filtering screen according to a certain sequence, so that the problem of killing bacteria, mildew, viruses and the like can be further processed after the PM2.5 is filtered at high efficiency and low resistance;
(2) in addition, the diamond lattice filter screen layer is designed in a diamond shape and a wave shape to a certain extent in the longitudinal direction and the transverse direction respectively, so that the specific surface area of the diamond lattice filter screen layer is increased as much as possible, and then the antibacterial and mildewproof effects of the diamond lattice filter screen layer are greatly improved through the surface coating treatment of the nano silver coating, and various bacteria and viruses attached to the surface of the diamond lattice filter screen layer are effectively killed; the flexible material and the detachable structure of the detachable frame can effectively install and place two layers of deformed filter screens, the installation volume is small, the filter screens can be conveniently replaced and installed, the two filter layers on the frame can be repeatedly used, the service life is long, and the detachable frame is detachable, clean, convenient and reusable; the air conditioner filtering component can realize the integration of functions of high efficiency, low resistance filtering, antibiosis, maintenance cost reduction and the like.
Drawings
FIG. 1 is a schematic view of the assembly of a high efficiency, low resistance, antimicrobial and low cost maintenance domestic air conditioner and air conditioner filter assembly according to the preferred embodiment of the present invention;
FIG. 2 is a schematic view of another angle assembly of the high efficiency, low resistance, antibacterial, low cost maintenance domestic air conditioner and air conditioner filter assembly according to the preferred embodiment of the present invention;
FIG. 3 is a perspective view of a high efficiency, low resistance, antimicrobial, re-flushable air conditioner filter assembly in accordance with a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a flat-laid arrangement of a high efficiency, low resistance, antimicrobial, re-flushable air conditioning filter assembly in accordance with a preferred embodiment of the present invention;
FIG. 5 is an enlarged view of area A of FIG. 4;
FIG. 6 is a schematic cross-sectional view of a diamond-shaped mesh layer according to a preferred embodiment of the present invention;
FIG. 7 is a schematic longitudinal cross-sectional view of a diamond-shaped mesh layer according to a preferred embodiment of the present invention;
FIG. 8 is a pictorial view of a diamond shaped mesh layer in accordance with a preferred embodiment of the present invention;
FIG. 9 is a schematic representation of another angle of a diamond shaped lattice screen layer according to the preferred embodiment of the present invention;
FIG. 10 is a schematic view of the assembly of the high efficiency, low resistance, antibacterial and low cost filter assembly of the central air conditioning system and the air conditioner according to the preferred embodiment 3 of the present invention;
FIG. 11 is a schematic view of another embodiment of the present invention 3, showing the assembly of the high efficiency, low resistance, antibacterial and low cost filter assembly of the central air conditioning system and the air conditioner;
fig. 12 is an assembly view of the central air conditioning system and the air conditioning filter assembly with high efficiency, low resistance, antibacterial property and low cost maintenance according to the preferred embodiment 3 of the present invention.
In the figure: 100. an air conditioning filter assembly; 1. a high-efficiency low-resistance antibacterial filter layer; 11. an antibacterial mildew-proof filtering supporting layer; 12. a high-efficiency low-resistance static cotton filter layer; 2. a diamond lattice screen layer; 21. aluminum strips; 3. a detachable frame; 31. a first flexible bag frame; 32. a second flexible bag frame; 33. a buckle structure; 200. an air conditioner main machine; 300. a ventilation duct; 400. a central air conditioning unit; a. a diamond-shaped grid; a1, the side length of the diamond grid; a2, depth of diamond mesh; b1, wave height of the cross section wave of the diamond grid filter screen layer; b2, cross-sectional wavelength of the diamond-shaped grid filter layer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified.
As shown in fig. 1 to 12, an efficient low-resistance antibacterial repeatedly-washable air conditioner filtering assembly 100 comprises an efficient low-resistance antibacterial filtering layer 1 and a rhombic lattice filtering layer 2 which are sequentially arranged from filtering-in direction to filtering-out direction and have the same projection area;
the high-efficiency low-resistance antibacterial filter layer consists of an antibacterial mildew-proof filter supporting layer 11 and a high-efficiency low-resistance electrostatic cotton filter layer 12 compounded on one surface of the antibacterial mildew-proof filter supporting layer, wherein the antibacterial mildew-proof filter supporting layer is a polymer fiber filament layer with antibacterial mildew-proof nano particles mixed in fiber molecules, and the diameter of the filament is 2-4 mu m; the high-efficiency low-resistance static cotton filter layer is a needle-punched non-woven fabric with the gram weight of 30-50g/m2(ii) a The needle-punched non-woven fabric is an electrostatic needle-punched non-woven fabric subjected to high-voltage corona discharge treatment;
the surface of the diamond grid filter screen layer is coated with nano silver paint; the diamond lattice filter screen layer 2 is composed of a plurality of aluminum strips 21 which are longitudinally arranged and distributed, each longitudinally arranged aluminum strip is in a wave shape, and a plurality of end-to-end diamond lattices a are formed between two adjacent aluminum strips; the side length a1 of the rhombic grid is 5-7 mm; the depth a2 of the rhombic grids is 7-8 mm; the width of the aluminum strip is 1-1.5mm, and the thickness of the aluminum strip is 0.5-1 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height b1 of the wave shape of the cross section of the diamond lattice filter screen layer is 18-22mm, and the cross section wavelength b2 of the diamond lattice filter screen layer is 20-25 mm.
As a further preferable scheme, the side length of the rhombic grid is 6 mm; the depth of the rhombic grids is 6 mm; the width of the aluminum strip is 1.5mm, and the thickness of the aluminum strip is 0.5 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height of the wave shape is 20mm, and the wavelength is 25 mm.
As a further preferred scheme, the air conditioner filtering component also comprises a detachable frame 3 used for coating the peripheries of the high-efficiency low-resistance antibacterial filtering layer and the diamond-shaped lattice filtering net layer; the removable frame is mounted to the air outlet/inlet of the air conditioning unit by a snap-fit arrangement 33.
As a further preferred solution, the detachable frame comprises a first flexible bag frame 31 and a second flexible bag frame 32; the contact positions of the first flexible packaging frame and the second flexible packaging frame are assembled and disassembled through joggling. The first flexible wrapping frame and the second flexible wrapping frame are made of plastic with certain flexibility.
As a further preferable scheme, the average particle diameter of the antibacterial and mildewproof nano particles is 20-80 nm; the antibacterial and mildewproof nano particle is one or a mixture of several of nano silver particles, graphene particles, zinc oxide particles, titanium dioxide particles or silver oxide particles.
As a further preferable scheme, the polymer fiber is one or a mixture of polyvinyl butyral, polyvinyl alcohol or polyurethane fiber.
In a further preferable scheme, the voltage in the high-voltage corona discharge electric field is 30-60KV, and the discharge time is 1-10 s.
As a further preferable scheme, the preparation method of the high-efficiency low-resistance antibacterial filter layer comprises the following steps:
a. preparation of PM2.5 antibacterial and mildewproof polymer solution
The weight percentages are as follows: 20-28% of polymer, 65-75% of solvent and 0.1-3% of antibacterial and mildewproof nano particle, mixing the polymer, the solvent and the antibacterial and mildewproof nano particle, heating to 35-90 ℃, and mechanically stirring for 1-3 hours to obtain a polymer solution containing the antibacterial and mildewproof nano particle;
b. preparation of PM2.5 antibacterial mildew-proof filtering supporting layer
Injecting a polymer solution containing antibacterial and mildewproof nano particles into a centrifugal spinning tank with a spinning hole aperture of 100-6000 mu m, increasing the rotating speed of the spinning tank to 4000-6000r/min at a speed of 50r/s, forming continuous filaments with the diameter of 2-4 mu m by the polymer solution containing the antibacterial and mildewproof nano particles under the action of centrifugal force, and allowing the filaments to fall and deposit on the surface of a conventional lapping screen to form an antibacterial and mildewproof filtering supporting layer;
c. preparation of PM2.5 high-efficiency low-resistance electrostatic cotton filter layer
Polypropylene short fibers are subjected to opening, mixing, carding and lapping in sequence to prepare a polypropylene fiber web, and then the polypropylene fiber web is reinforced into a polypropylene fiber web with the gram weight of 30-50g/m through multiple needling by a needling machine2The needle punched non-woven fabric is then passed through one or several continuous high voltage corona discharge electric fields with voltage of 30-60KV and discharge time of 1-10s to obtain high efficiency low resistance static cotton filter layer;
d. ultrasonic composite preparation of high-efficiency low-resistance antibacterial and mildewproof filtering material
Thermally bonding the antibacterial mildew-proof filtering supporting layer and the high-efficiency low-resistance electrostatic cotton filtering layer by an ultrasonic compounding machine to obtain the high-efficiency low-resistance antibacterial mildew-proof filtering material, wherein the ultrasonic compounding time is 1.5-3s, and the frequency is 15-25 kHz;
e. preparation of high-efficiency low-resistance antibacterial filter layer
The high-efficiency low-resistance antibacterial mildew-proof filtering material is cut into the size and specification required by the air conditioner filter screen.
The high-efficiency low-resistance antibacterial filter layer has the following advantages:
a. the contact area of the antibacterial and mildewproof particles and pathogenic bacteria is effectively increased by utilizing the polymer superfine fiber containing the antibacterial and mildewproof nano particles, and the longer antibacterial and mildewproof effect is achieved by utilizing the high porosity of the superfine fiber.
b. The high-efficiency low-resistance static cotton filter layer is obtained by utilizing the needled non-woven fabric, the PM2.5 filter efficiency is more than or equal to 99 percent, and the wind resistance is less than or equal to 10Pa, so that the problem of contradiction between the filter efficiency and the wind resistance is solved.
c. The antibacterial effect of the surface charge is combined with the antibacterial and mildewproof nano particles, so that the antibacterial and mildewproof effects are improved.
d. The antibacterial mildew-proof filtering supporting layer and the high-efficiency low-resistance static cotton filtering layer are compounded through the ultrasonic bonder, so that the pollution of a chemical bonding agent to the environment is avoided, the compounding effect is good, and the working procedure is simple.
e. The antibacterial and mildewproof nano particles are mixed with the polymer to form filaments, and the antibacterial and mildewproof particles are fused among polymer macromolecules forming the superfine fibers and are not only attached to the surfaces of the fibers, so that the antibacterial and mildewproof nano particles are not easy to separate from the fibers and are uniformly distributed, and the antibacterial and mildewproof durability is improved.
As a further preferable scheme, the polymer is one or a mixture of polyvinyl butyral, polyvinyl alcohol or polyurethane fiber; the solvent is one of water, ethanol, dimethylformamide, dichloromethane or acetone.
The following are specific examples of the present invention, and raw materials, equipments and the like used in the following examples can be obtained by purchasing them unless otherwise specified.
Example 1:
a high-efficiency low-resistance antibacterial repeatedly-washable air conditioner filtering component 100 comprises a high-efficiency low-resistance antibacterial filtering layer 1, a diamond-shaped grid filtering net layer 2 and a detachable frame 3, wherein the high-efficiency low-resistance antibacterial filtering layer 1, the diamond-shaped grid filtering net layer 2 and the detachable frame 3 are sequentially arranged from filtering direction to filtering direction and have the same projection area; the detachable frame comprises a first flexible bag frame 31 and a second flexible bag frame 32; the contact positions of the first flexible packaging frame and the second flexible packaging frame are assembled and disassembled through joggling. The first flexible wrapping frame and the second flexible wrapping frame are made of plastic with certain flexibility. The detachable frame is installed at an air outlet of the air conditioner main unit through a buckling structure 33.
The high-efficiency low-resistance antibacterial filter layer consists of an antibacterial mildew-proof filter supporting layer 11 and a high-efficiency low-resistance electrostatic cotton filter layer 12 compounded on one surface of the antibacterial mildew-proof filter supporting layer, wherein the antibacterial mildew-proof filter supporting layer is a polymer fiber filament layer with antibacterial mildew-proof nano particles mixed in fiber molecules, and the diameter of the filament is 2-4 mu m; the high-efficiency low-resistance static cotton filter layer is a needle-punched non-woven fabric with the gram weight of 30-50g/m2(ii) a What is needed isThe needle-punched non-woven fabric is an electrostatic needle-punched non-woven fabric which is treated by high-voltage corona discharge;
the surface of the diamond grid filter screen layer is coated with nano silver paint; the rhombus grid filter screen layer is composed of a plurality of aluminum strips 21 which are longitudinally arranged and distributed, each longitudinally arranged aluminum strip is in a wave shape, and a plurality of rhombus grids a which are connected end to end are formed between two adjacent aluminum strips; the side length a1 of the rhombic grid is 6 mm; the depth a2 of the rhombic grid is 6 mm; the width of the aluminum strip is 1.5mm, and the thickness of the aluminum strip is 0.5 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height b1 of the wave shape of the cross section of the diamond grid filter screen layer is 20mm, and the cross section wavelength b2 of the diamond grid filter screen layer is 25 mm.
The preparation method of the high-efficiency low-resistance antibacterial filter layer comprises the following steps:
a. preparation of PM2.5 antibacterial and mildewproof polymer solution
The weight percentages are as follows: 22% of polyvinyl alcohol, 75% of dichloromethane solution and 3% of antibacterial and mildewproof nano particles, and after the polymer, the solvent and the antibacterial and mildewproof nano particles are mixed, the temperature is raised to 45 ℃ and the mixture is mechanically stirred for 3 hours, so that polymer solution containing the antibacterial and mildewproof nano particles is obtained;
b. preparation of PM2.5 antibacterial mildew-proof filtering supporting layer
Injecting a polyvinyl alcohol solution containing antibacterial and mildewproof nano particles into a centrifugal spinning tank with a spinning hole with the aperture of 150 mu m, simultaneously increasing the rotating speed of the spinning tank to 4500r/min at the speed of 50r/s, forming continuous filaments with the diameter of 3 mu m by the polyvinyl alcohol solution containing the antibacterial and mildewproof nano particles under the action of centrifugal force, and falling and depositing the filaments on the surface of a conventional lapping screen to form an antibacterial and mildewproof filtering supporting layer under the action of gravity;
c. preparation of PM2.5 high-efficiency low-resistance electrostatic cotton filter layer
Polypropylene short fibers are subjected to opening, mixing, carding and lapping in sequence to prepare a polypropylene fiber web, and then the polypropylene fiber web is consolidated into a grammage of 55g/m by a needle machine through multiple needling2Then the needle-punched non-woven fabric is passed through one or several continuous high-voltage corona discharge electric fields, the voltage is 30-60KV, and the discharge time is 1-10s, obtaining a high-efficiency low-resistance static cotton filter layer;
d. ultrasonic composite preparation of high-efficiency low-resistance antibacterial and mildewproof filtering material
Thermally bonding the antibacterial mildew-proof filtering supporting layer and the high-efficiency low-resistance electrostatic cotton filtering layer through an ultrasonic compounding machine to obtain the high-efficiency low-resistance antibacterial mildew-proof filtering material, wherein the ultrasonic compounding time is 2s, and the frequency is 25 kHz;
e. preparation of high-efficiency low-resistance antibacterial filter layer
The high-efficiency low-resistance antibacterial mildew-proof filtering material is cut into the size and specification required by the air conditioner filter screen.
The diamond-shaped lattice filter screen layer is processed by a plurality of aluminum strips according to the structural design of wave shape and diamond shape.
And finally, assembling to obtain the high-efficiency low-resistance antibacterial repeatedly-washable air conditioner filtering component, which is shown in figure 3.
Comparative example 1
Compared with the air conditioner filtering component in the embodiment 1, the air conditioner filtering component uses a conventional air conditioner filtering net and a filtering cotton core, the air conditioner filtering net adopts an air conditioner filtering net with the model of KFR35/DY-IA, the filtering cotton core adopts a conventional filtering cotton core, and the area size of the filtering cotton core is consistent with the size of the high-efficiency low-resistance antibacterial filtering layer in the embodiment 1.
Comparative example 2
Compared with the embodiment 1, the air-conditioning filter assembly has the advantages that the diamond-shaped lattice filter layer is replaced by a conventional air-conditioning filter screen, and the air-conditioning filter screen is an air-conditioning filter screen with the type of KFR35/DY-IA, namely, the air-conditioning filter assembly comprises a high-efficiency low-resistance antibacterial filter layer and an air-conditioning filter screen; other conditions were the same as in example 1.
Example 2:
as shown in fig. 1-2, a household air conditioner with high efficiency, low resistance, antibacterial property and low maintenance cost comprises a main air conditioner 200, and a detachable and cleanable air conditioner filter assembly installed on an air outlet of the main air conditioner, wherein the air conditioner filter assembly adopts the repeatedly-washable air conditioner filter assembly 100 of embodiment 1.
Example 3:
as shown in fig. 10-12, a central air conditioner with high efficiency, low resistance, antibacterial property and low maintenance cost comprises a central air conditioning unit 400 and a ventilation duct 300 connected with the central air conditioning unit, in this embodiment, an air conditioner filtering component may be installed at an air outlet of the ventilation duct, as shown in fig. 10; or the air conditioner filter assembly can be arranged on the air inlet of the ventilating duct, as shown in fig. 11; or the air conditioner filter assembly may be installed in the central air conditioning equipment, as shown in fig. 12, in this example, the air conditioner filter assembly may be installed at an air inlet (as left side of the view in fig. 12) in the central air conditioning equipment as a primary filter, or may be installed at an air outlet (as right side of the view in fig. 12) in the central air conditioning equipment as a secondary filter; the air conditioning filter assembly utilized the re-flushable air conditioning filter assembly 100 of example 1.
Effect evaluation and Performance detection
Comparative examples 1-2 were compared with example 1, and the filtration efficiency, the wind resistance, the antibacterial effect (24h bacteria reduction rate), the mildewproof rating (after 28 days), and the antibacterial durability, which were expressed as the antibacterial effect after 6 months of continuous use, were measured, respectively, and the results are shown in table 1.
Table 1 shows performance test data of the air conditioner filter assemblies of example 1 and comparative examples 1-2
It can be seen from table l that, compared with comparative example 1, the invention selects the high-efficiency low-resistance PM2.5 antibacterial and mildewproof filtering material suitable for the household air conditioner, designs the structure of the air conditioner filtering net, makes the high-efficiency low-resistance PM2.5 antibacterial and mildewproof filtering material into the high-efficiency low-resistance antibacterial filtering layer, combines the rhombic lattice filtering net layer as the supporting layer, and arranges the combined air conditioner filtering net according to a certain sequence, can further process the killing problem of bacteria, mildew, viruses and the like after ensuring the high-efficiency low-resistance filtering of PM2.5, compared with the existing metal filtering net or/and cotton filtering net, the filtering, purifying and sterilizing effect is better, the ventilation low resistance is ensured, and the invention is more suitable for the installation of the air outlet. Compared with the comparative example 2, because of no diamond-shaped grid filter screen layer, the high-efficiency low-resistance antibacterial filter layer is not effectively supported, more importantly, the common filter screen is not subjected to nano particle surface treatment, the continuous antibacterial effect of the filter screen is reduced, and the meshes of the existing filter screen are very small and smaller than 1 multiplied by 1mm, so that the wind resistance is relatively improved.
In summary, the air conditioner filter assembly of the present invention can achieve the integration of functions such as high efficiency, low resistance filtration, antibacterial, maintenance cost reduction (repeated flushing), etc.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The high-efficiency low-resistance antibacterial repeatedly-washable air conditioner filtering component is characterized by comprising a high-efficiency low-resistance antibacterial filtering layer and a rhombic grid filtering layer, wherein the high-efficiency low-resistance antibacterial filtering layer and the rhombic grid filtering layer are sequentially arranged from filtering-in direction to filtering-out direction and have the same projection area;
the high-efficiency low-resistance antibacterial filter layer consists of an antibacterial mildew-proof filter supporting layer and a high-efficiency low-resistance electrostatic cotton filter layer compounded on one surface of the antibacterial mildew-proof filter supporting layer, wherein the antibacterial mildew-proof filter supporting layer is a polymer fiber filament layer with antibacterial mildew-proof nano particles mixed in fiber molecules, and the diameter of the filament is 2-4 mu m; the high-efficiency low-resistance static cotton filter layer is a needle-punched non-woven fabric with the gram weight of 30-50g/m2(ii) a The needle-punched non-woven fabric is an electrostatic needle-punched non-woven fabric subjected to high-voltage corona discharge treatment;
the surface of the diamond grid filter screen layer is coated with nano silver paint; the rhombus grid filter screen layer is composed of a plurality of aluminum strips which are longitudinally arranged and distributed, each aluminum strip which is longitudinally arranged is in a wave shape, and a plurality of rhombus grids which are connected end to end are formed between two adjacent aluminum strips; the side length of the rhombic grid is 5-7 mm; the depth of the rhombic grids is 7-8 mm; the width of the aluminum strip is 1-1.5mm, and the thickness of the aluminum strip is 0.5-1 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height of the wave shape is 18-22mm, and the wavelength is 20-25 mm.
2. An air conditioning filter assembly as recited in claim 1 wherein said diamond shaped mesh has a side length of 6 mm; the depth of the rhombic grids is 6 mm; the width of the aluminum strip is 1.5mm, and the thickness of the aluminum strip is 0.5 mm; the cross section of the diamond grid filter screen layer is wavy; the wave height of the wave shape is 20mm, and the wavelength is 25 mm.
3. The air conditioning filter assembly as recited in claim 1, further comprising a removable frame for wrapping the perimeter of said high efficiency, low resistance antimicrobial filter layer and said diamond mesh layer; the detachable frame is installed at an air outlet/air inlet of the air conditioning equipment through a buckle structure.
4. An air conditioning filter assembly as recited in claim 3 wherein said removable frame includes a first flexible frame and a second flexible frame; the contact positions of the first flexible packaging frame and the second flexible packaging frame are assembled and disassembled through joggling.
5. The air conditioning filter assembly of claim 1, wherein said antimicrobial and antifungal nanoparticles have an average particle size of 20-80 nm; the antibacterial and mildewproof nano particle is one or a mixture of several of nano silver particles, graphene particles, zinc oxide particles, titanium dioxide particles or silver oxide particles.
6. An air conditioning filter assembly as set forth in claim 1 wherein said polymeric fibers are one or a mixture of polyvinyl butyral, polyvinyl alcohol or polyurethane fibers.
7. An air conditioner filter assembly as set forth in claim 1 wherein said high voltage corona discharge field is at a voltage of 30-60KV and a discharge time of 1-10 s.
8. The air conditioner filter assembly of claim 1, wherein the high efficiency, low resistance, and antibacterial filter layer is prepared by the following method:
a. preparation of PM2.5 antibacterial and mildewproof polymer solution
The weight percentages are as follows: 20-28% of polymer, 65-75% of solvent and 0.1-3% of antibacterial and mildewproof nano particle, mixing the polymer, the solvent and the antibacterial and mildewproof nano particle, heating to 35-90 ℃, and mechanically stirring for 1-3 hours to obtain a polymer solution containing the antibacterial and mildewproof nano particle;
b. preparation of PM2.5 antibacterial mildew-proof filtering supporting layer
Injecting a polymer solution containing antibacterial and mildewproof nano particles into a centrifugal spinning tank with a spinning hole aperture of 100-6000 mu m, increasing the rotating speed of the spinning tank to 4000-6000r/min at a speed of 50r/s, forming continuous filaments with the diameter of 2-4 mu m by the polymer solution containing the antibacterial and mildewproof nano particles under the action of centrifugal force, and allowing the filaments to fall and deposit on the surface of a conventional lapping screen to form an antibacterial and mildewproof filtering supporting layer;
c. preparation of PM2.5 high-efficiency low-resistance electrostatic cotton filter layer
Polypropylene short fibers are subjected to opening, mixing, carding and lapping in sequence to prepare a polypropylene fiber web, and then the polypropylene fiber web is reinforced into a polypropylene fiber web with the gram weight of 30-50g/m through multiple needling by a needling machine2The needle punched non-woven fabric is then passed through one or several continuous high voltage corona discharge electric fields with voltage of 30-60KV and discharge time of 1-10s to obtain high efficiency low resistance static cotton filter layer;
d. ultrasonic composite preparation of high-efficiency low-resistance antibacterial and mildewproof filtering material
Thermally bonding the antibacterial mildew-proof filtering supporting layer and the high-efficiency low-resistance electrostatic cotton filtering layer by an ultrasonic compounding machine to obtain the high-efficiency low-resistance antibacterial mildew-proof filtering material, wherein the ultrasonic compounding time is 1.5-3s, and the frequency is 15-25 kHz;
e. preparation of high-efficiency low-resistance antibacterial filter layer
The high-efficiency low-resistance antibacterial mildew-proof filtering material is cut into the size and specification required by the air conditioner filter screen.
9. An air conditioning filter assembly as recited in claim 8 wherein said polymer is selected from one or a mixture of polyvinyl butyral, polyvinyl alcohol or polyurethane fiber; the solvent is one of water, ethanol, dimethylformamide, dichloromethane or acetone.
10. An air conditioning unit with high efficiency, low resistance, bacteria resistance and low maintenance cost, which is characterized in that the air conditioning unit comprises a detachable and washable air conditioning filter assembly arranged on an air outlet of the air conditioning unit, and the air conditioning filter assembly adopts the air conditioning filter assembly as claimed in any one of claims 1 to 9.
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