CN213208196U

CN213208196U - Filter screen and contain its air purifier

Info

Publication number: CN213208196U
Application number: CN202021772924.0U
Authority: CN
Inventors: 黄升阳; 严诚; 刘永如; 孙晚莹
Original assignee: Foshan Shunde Apollo Air Cleaner Co Ltd
Current assignee: Freudenberg Apollo Filtration Technologies Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-05-14
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a filter screen and contain its air purifier, air purifier's filter screen includes: the filter screen has the filter cloth, and the filter cloth is including the windward layer, particulate matter filter layer, active carbon filter layer and the supporting layer of range upon range of setting up in order, and the particulate matter filter layer is suitable for blockking dust and particulate matter, and windward side is located on the windward layer, and the windward layer is including the fluffy piece that is used for holding the dust. According to the utility model discloses an air purifier's filter screen through fluffy loose piece's setting, can be so that the windward layer can hold more dusts, can improve the filter effect of filter screen from this. Through the setting of windward layer and particulate matter filter layer, can prevent to use the back for a long time, the active carbon filter layer produces the bacterium because of dust and particulate matter hold in the active carbon filter layer for a long time, and then has avoided microorganism such as bacterium to produce like the production of peculiar smell such as sour.

Description

Filter screen and contain its air purifier

Technical Field

The utility model belongs to the technical field of the air purification technique and specifically relates to an air purifier who relates to a filter screen and contain it.

Background

Among the correlation technique, be equipped with the filter screen that excessively filters impurity such as dust, particulate matter in the air purifier, the filter screen is including the activated carbon layer that has the activated carbon, and activated carbon inside has huge surface area to guarantee its good adsorption effect, but simultaneously, if dust, particulate matter hold for a long time inside activated carbon, breed the bacterium easily, and produce the peculiar smell easily, influence user's experience and feel.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an air purifier's filter screen, air purifier's filter screen filter effect is good, and the peculiar smell is little.

The utility model also provides an air purifier, air purifier includes the filter screen.

According to the utility model discloses air purifier's filter screen, the filter screen has the filter cloth, the filter cloth is including range upon range of windward layer, particulate matter filter layer, active carbon filter layer and the supporting layer that sets up in order, the particulate matter filter layer is suitable for and blocks dust and particulate matter, windward side is located to the windward layer, the windward layer is including the fluffy piece that is used for holding the dust.

According to the utility model discloses air purifier's filter screen through fluffy setting of pine piece, can be so that the windward layer can hold more dusts, can improve the filter effect of filter screen from this. Simultaneously, the particulate matter filter layer can block the particulate matter to further guarantee the filter effect of filter screen. The windward layer cooperates with the particle filtering layer, so that dust and particles can be prevented from entering the activated carbon filtering layer. In addition, because of the inside huge surface area that has of active carbon filter layer, so set up and can prevent to use the back for a long time, the active carbon filter layer produces the bacterium because of dust and particulate matter hold in the active carbon filter layer for a long time, and then avoided microorganism such as bacterium to produce like the production of peculiar smell such as sour taste, the peculiar smell is little when having guaranteed the filter effect.

In some examples, the activated carbon filtration layer comprises a wood activated carbon layer or a coconut shell activated carbon layer or a bamboo activated carbon layer.

In some examples, at least one of the activated carbon filtration layer and the windward layer has an antibacterial layer.

In some examples, the lofty member is a lofty hot air cotton or lofty needle-punched nonwoven.

In some examples, the lofty member has a thickness of 0.2mm to 0.4 mm.

In some examples, the support layer has a polyester fiber nonwoven fabric backbone.

In some examples, the support layer has a thickness of 0.1mm to 0.5 mm.

In some examples, the filter cloth further comprises an adhesive layer, the adhesive layer is adhered between the windward layer and the particulate matter filter layer, or the adhesive layer is adhered between the particulate matter filter layer and the activated carbon filter layer, or the adhesive layer is adhered between the activated carbon filter layer and the support layer, and the adhesive layer is hot-melt pressure-sensitive adhesive.

In some examples, the support layer, the particulate filter layer, the activated carbon filter layer, and the windward layer are all mesh structures.

According to the utility model discloses air purifier, include as above the filter screen. According to the utility model discloses air purifier, the filter effect is good, is difficult for producing the peculiar smell, has improved the experience sense when the user uses.

Additional aspects and advantages of the 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.

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 is a schematic structural view of a filter cloth according to an embodiment of the present invention.

Reference numerals:

a filter cloth 100; a windward layer 10; a particulate filter layer 20; an activated carbon filter layer 30; a support layer 40.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

The following describes with reference to fig. 1 that according to the utility model discloses an air purifier's filter screen, dust collector such as air purifier can be applied to the filter screen.

As shown in fig. 1, the filter screen has a filter cloth 100, the filter cloth 100 includes a windward layer 10, a particulate matter filter layer 20, an activated carbon filter layer 30 and a support layer 40, which are sequentially stacked, the particulate matter filter layer 20 is adapted to block dust and particulate matter, the windward layer 10 is disposed on the windward side, and the windward layer 10 includes a fluffy member for accommodating dust.

It should be noted that the windward layer 10 may be disposed on a windward side of an air inlet or an air outlet of the air purifier, and the supporting layer 40 is disposed on a leeward side of the air inlet or the air outlet of the air purifier. Wherein, fluffy refers to the material that the porosity is higher under the same volume, like this, can make fluffy spare's inner structure have bigger space to hold more dust, can effectively reduce long-time back of using, windward layer 10 inner space saturation, and the probability that leads to the condition emergence of dust entering filter layer. For example, the puffs may be part of the windward layer 10, or the windward layer 10 may be constituted by puffs, so that the windward layer 10 may contain more dust and particles. Through the setting of supporting layer 40, can play the effect of support, guarantee the structural strength of filter screen.

It can be understood that the activated carbon filter layer 30 is provided with activated carbon, so that the inside of the activated carbon filter layer 30 has a pore structure, so that the activated carbon has a large surface area, and further harmful gas can be adsorbed, and thus the filter screen can have the effects of eliminating peculiar smell and adsorbing gaseous pollutants such as formaldehyde.

For preventing dust and particulate matter from getting into activated carbon filter layer 30, locate particulate matter filter layer 20 between activated carbon filter layer 30 and windward layer 10, particulate matter filter layer 20 can backstop dust and particulate matter, and then can prevent that dust and particulate matter from being held in the hole of the inside of activated carbon, and then can prevent to use the back for a long time, activated carbon filter layer 30 produces the bacterium because of dust and particulate matter hold in activated carbon filter layer 30 for a long time, thereby prevented that activated carbon filter layer 30 from producing the bacterium, and then avoided microorganism such as bacterium and produced peculiar smell such as sour taste, through the filtering particulate matter that can guarantee the filter screen, harmful gas's effect. Meanwhile, through the arrangement of the fluffy piece, the dust and particles can be prevented from entering the activated carbon filter layer 30 by matching with the particle filter layer 20, so that the generation of peculiar smell is prevented.

According to the filter screen using the novel embodiment, the windward layer 10 can contain more dust through the arrangement of the fluffy piece, and therefore the filtering effect of the filter screen can be improved. Meanwhile, the particulate matter filtering layer 20 can block the particulate matter to further ensure the filtering effect of the filter screen. Windward layer 10 cooperates with particulate filter layer 20 to prevent dust and particulates from entering activated carbon filter layer 30. In addition, because of the inside huge surface area that has of activated carbon filter layer 30, so set up and can prevent to use the back for a long time, activated carbon filter layer 30 produces the bacterium because of dust and particulate matter hold in activated carbon filter layer 30 for a long time, and then avoided microorganism such as bacterium to produce like the production of peculiar smell such as sour taste, and the peculiar smell is little when having guaranteed the filter effect.

For example, particulate matter filter layer 20 can be electret PP (Polypropylene) melt-blown non-woven fabrics material, and the filter efficiency of the filter layer of so setting to the particulate matter that the aerodynamic equivalent diameter in the ambient air is 0.3 microns can reach more than 99%, so, particulate matter filter layer 20 can effectively intercept dust and the particulate matter that is in the air, simultaneously, can backstop and hold dust and the particulate matter in windward layer 10.

In some examples, the activated carbon filtration layer 30 may include at least a wood activated carbon layer or a coconut shell activated carbon layer or a bamboo activated carbon layer. The wood activated carbon material has the characteristics of large porous adsorption capacity, high filtering speed and the like. The coconut shell activated carbon layer has the characteristics of large specific surface area, high wear-resisting strength, high adsorption speed, large adsorption capacity, easy desorption, repeated regeneration and use and the like, and the bamboo activated carbon has super-strong adsorption capacity and has the functions of moisture absorption, filtration, purification, disinfection, heat storage and moisture preservation. For example, the activated carbon filter layer 30 has both a wooden activated carbon layer or a coconut shell activated carbon layer and a bamboo activated carbon layer, so that the adsorption effect of the activated carbon filter layer 30 is good. For example, the activated carbon filter layer 30 includes a wood activated carbon layer, a coconut shell activated carbon layer, and a bamboo activated carbon layer. The mass of the wooden activated carbon layer, the coconut shell activated carbon layer and the bamboo activated carbon layer accounts for 70-100% of the mass of the activated carbon filter layer 30, so that the activated carbon filter layer 30 has a good filtering effect. The activated carbon filter layer 30 may further include an adsorbent material layer of 20-80 mesh activated carbon, activated alumina, molecular sieve, or the like. The adsorbent material layer may account for 0-30% by mass of the activated carbon filter layer 30.

In some examples, at least one of the activated carbon filtration layer 30 and the windward layer 10 has an antibacterial layer. For example, the activated carbon filter layer 30 and the windward layer 10 may each have an antibacterial layer. The windward layer 10 can be added with a slow-release long-acting antibacterial, mildewproof and antiviral agent, so that the microorganisms such as important bacteria in the air contacted with the windward layer 10 can be removed for a long time, the windward layer 10 has a good antibacterial effect, and the bacteria can be prevented from entering the filter layer and the supporting layer 40. The antibacterial layer can be arranged on the adsorption material layer of the activated carbon filter layer 30, and the antibacterial layer can be an antibacterial, mildewproof and antiviral agent. Therefore, the breeding of bacteria can be effectively prevented, and the generation of peculiar smell caused by the breeding of microorganisms such as bacteria and the like is avoided.

In some embodiments, the fluffy member can be fluffy hot air cotton, and the hot air cotton has the characteristics of high fluffy degree, good elasticity, soft texture, strong heat retention, good air and water permeability and the like, so that the effects of filtration, moisture prevention and the like can be achieved. Or, the fluffy piece can be fluffy needle-punched non-woven fabrics, and the needle-punched non-woven fabrics have the characteristics of acid and alkali resistance, corrosion resistance, aging resistance, high structural strength, good filterability and the like, so that the windward layer 10 has good structural strength, long service life and good filtering effect. In one embodiment of the present invention, the thickness of the fluffy member may be 0.2mm-0.4mm, which is advantageous for the windward layer 10 to hold more dust.

In some examples, the support layer 40 may have a polyester fiber nonwoven fabric skeleton, for example, the support layer 40 may be made of a 30-120gsm (gram weight) polyester fiber nonwoven fabric skeleton material, which may provide the support layer 40 with features of short process flow, fast production speed, high yield, low cost, and the like. In some examples, the thickness of the support layer 40 may be 0.1mm to 0.5 mm. Thus, both the structural reliability of the support layer 40 and the lightness and thinness of the filter screen can be achieved. For example, the stiffness of the support layer 40 in the machine direction is 150mg or more and the stiffness in the cross direction is 90mg or more, so as to ensure that the support layer 40 has good balanced stiffness.

In some embodiments, the filter cloth 100 may further include an adhesive layer, which is adhered between the windward layer 10 and the particulate filter layer 20, between the particulate filter layer 20 and the activated carbon filter layer 30, or between the activated carbon filter layer 30 and the support layer 40, for example, an adhesive layer is disposed between four layers of stacked structures, and the adhesive layer may be a hot melt pressure sensitive adhesive. Therefore, the four-layer structure can be compounded together by the low-odor hot-melt adhesive pressure-sensitive adhesive by utilizing the glue spraying compounding process so as to ensure that the structure of the filter cloth 100 is reliable and the odor is low.

For example, the hot melt pressure sensitive adhesive can have a viscosity of 2000-7000cps, a softening point of 80-105 ℃, a volatile organic compound number (for example, measured by headspace gas chromatography) of less than or equal to 15, a total content of less than or equal to 1000ug/g, and an odor grade of less than or equal to 2, and the lower viscosity is selected to make the hot melt adhesive have good flow property, so that the hot melt adhesive can more easily permeate into the material to be bonded, thereby having good adhesive property, and greatly reducing the adhesive application amount.

In some embodiments, the support layer 40, the particulate filter layer 20, the activated carbon filter layer 30, and the windward layer 10 are all mesh structures to ensure that the filter screen can have good ventilation.

The filter cloth 100 of the embodiment of the present invention and the filter cloth 100 of the related art are subjected to an odor test, and the odor test standard can refer to the VDA 270 odor test standard and be scored according to table 1.

TABLE 1

The following describes the test procedure of the sample filter screen and the contrast filter screen of the embodiment of the present invention:

1. preparing a sample filter screen and a contrast filter screen of the embodiment of the utility model;

2. set up and only load the utility model discloses sample filter screen air purifier and the air purifier who loads the contrast filter screen, all test prototypes are placed in same ordinary office area, and the regional internal number of people more than or equal to 5 of time quantum of working, air purifier set up to automatic gear.

3. After each continuous operation for 1 week, the air quantity is set to be maximum, the operation is carried out for 30min, and then the air speed is reduced to be the middle gear.

4. At least 5 evaluators are arranged, the evaluators are in good condition, the problems of cold, nasal obstruction and the like affecting the smell are avoided, the smell is identified at a position 20cm away from the upper end of the air outlet of the air purifier, and the score is given according to the standard in the table 1.

TABLE 2

Refer to table 2, 4 weeks before air purifier moves, contrast filter screen 1 and contrast filter screen 2's smell all is greater than the utility model discloses the filter screen of embodiment, because of contrast filter screen 1 smell is great, the smell score has been greater than 3, the event only chooses contrast filter screen 2 to continue the test, in 4-6 weeks of operation, the smell of contrast filter screen is far greater than the utility model discloses the filter screen of embodiment, the event is only right the utility model discloses the filter screen of embodiment tests, the utility model discloses the filter screen of embodiment still is less than 2 after 8 weeks of operation smell score, and the speed of smell increase obviously is less than contrast filter screen 1 and contrast filter screen 2. Therefore, the filter screen provided by the embodiment of the utility model can effectively reduce the speed of odor generation and the odor is less.

A method for manufacturing the filter cloth 100 according to an embodiment of the present invention is described below, including the following steps:

(1) preparing raw materials: the windward layer 10 adopts 20gsm hot air cotton, and is simultaneously provided with 30-50gsm antibacterial and antifungal antiviral agent formula liquid, the particulate matter filter layer 20 adopts 20-30gsm electret PP melt-blown non-woven fabric, and the filtering efficiency of 0.3 micron particulate matter is more than or equal to 99 percent; the activated carbon filter layer 30 may be a mixture of 100-500gsm activated carbon and antimicrobial activated carbon; the support layer 40 may be 45gsm PET scrim and 10-20gsm hot melt pressure sensitive adhesive.

(2) Preparation of windward layer 10: the hot air cotton and the antibacterial agent are prepared by a tenter setting machine by using a one-dip one-roll process.

(3) The windward bacterium layer and the particulate matter filter layer 20 are compounded by a glue spraying compounding process to form an adhesive layer.

(4) The adhesive layer, the activated carbon filter layer 30 and the support layer 40 are compositely bonded by glue spraying of a glue spraying machine, wherein the particle filter layer 20 of the adhesive layer is connected with the activated carbon filter layer 30, and the activated carbon filter layer 30 is connected with the support layer 40.

(5) Cutting and packaging: and cutting the compounded filter screen and then packaging.

According to the utility model discloses air purifier, including above-mentioned filter screen. According to the utility model discloses air purifier, the filter effect is good, is difficult for producing the peculiar smell, has improved the experience sense when the user uses.

It should be noted that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art may modify, modify and modify the above embodiments according to the technical spirit of the present invention without departing from the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "lateral", "longitudinal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an air purifier's filter screen, its characterized in that, the filter screen has the filter cloth, the filter cloth is including windward layer, particulate matter filter layer, active carbon filter layer and the supporting layer that stacks up the setting in order, the particulate matter filter layer is suitable for and blocks dust and particulate matter, windward side is located to the windward layer, windward layer is including the fluffy piece that is used for holding the dust.

2. The filter screen of an air cleaner according to claim 1, wherein the activated carbon filter layer comprises a wood activated carbon layer or a coconut shell activated carbon layer or a bamboo activated carbon layer.

3. The filter screen of an air cleaner according to claim 2, wherein at least one of the activated carbon filter layer and the windward layer has an antibacterial layer.

4. The filter screen of an air purifier according to claim 1, wherein the fluffy member is fluffy hot air cotton or fluffy needle-punched non-woven fabric.

5. The filter screen of an air cleaner according to claim 1, wherein the fluffy member has a thickness of 0.2mm to 0.4 mm.

6. The filter screen of an air cleaner according to claim 1, wherein the support layer has a polyester fiber non-woven fabric skeleton.

7. The filter screen of an air cleaner according to claim 1, wherein the support layer has a thickness of 0.1mm to 0.5 mm.

8. The filter screen of an air purifier as claimed in claim 1, wherein the filter cloth further comprises an adhesive layer, the adhesive layer is adhered between the windward layer and the particulate filter layer, or the adhesive layer is adhered between the particulate filter layer and the activated carbon filter layer, or the adhesive layer is adhered between the activated carbon filter layer and the support layer, and the adhesive layer is a hot melt pressure sensitive adhesive.

9. The filter screen of an air cleaner according to claim 1, wherein the support layer, the particulate filter layer, the activated carbon filter layer, and the windward layer are all of a mesh structure.

10. An air cleaner comprising the filter screen of any one of claims 1-9.