CN217511378U

CN217511378U - PTFE filter material and air purifier

Info

Publication number: CN217511378U
Application number: CN202221425829.2U
Authority: CN
Inventors: 苏文锋; 王翼; 奉青山; 陈希; 王利仁
Original assignee: Foshan Shunde Apollo Air Cleaner Co Ltd
Current assignee: Freudenberg Apollo Filtration Technologies Co Ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-09-30
Anticipated expiration: 2032-06-08

Abstract

The utility model provides a PTFE filter media and air purifier belongs to the air purification field, and the PTFE filter media is used for purifying the particulate matter including the PTFE layer, first supporting layer and the first functional layer that connect gradually, PTFE layer, and first functional layer is used for purifying the pollutant except the particulate matter. One side through keeping away from the PTFE layer at first supporting layer adds first functional layer, can be so that this PTFE filter media not only can purify the particulate matter, but also can purify the pollutant except the particulate matter, for example harmful gas, microorganism etc. to effectively improve the purifying effect of this PTFE filter media. Correspondingly, the air purifier adopting the PTFE filter material has the characteristics of wide purification range and good purification effect.

Description

PTFE filter material and air purifier

Technical Field

The utility model relates to an air purification field particularly, relates to a PTFE filter media and air purifier.

Background

PTFE (polytetrafluoroethylene) is a superhydrophobic polymer and has great application potential in air filtration and purification.

However, the existing PTFE filter can only purify particles, and has no purifying effect on other pollutants except the particles, such as harmful gases, microorganisms, and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PTFE filter media and air purifier, it can realize the purification to other pollutants except the particulate matter.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a PTFE filter media, including the PTFE layer, first supporting layer and the first functional layer that connect gradually, the PTFE layer is used for purifying the particulate matter, and first functional layer is used for purifying the pollutant except the particulate matter.

In an alternative embodiment, the first functional layer is a noxious gas removal layer; the harmful gas removing layer is a formaldehyde removing layer, a VOC removing layer, an ammonia gas removing layer, a nitrogen dioxide removing layer, a sulfur dioxide removing layer, an acetaldehyde removing layer or an acetic acid removing layer.

In an alternative embodiment, the first functional layer is an antimicrobial layer.

In an alternative embodiment, the first functional layer is applied to the first support layer; the PTFE layer is coated on the first support layer through hot pressing.

In an alternative embodiment, the first functional layer is applied to the first support layer by spraying, laminating, dipping, knife coating, printing or deposition.

In an alternative embodiment, a second support layer is further included, which is attached to the PTFE layer on a side thereof remote from the first support layer, and a second functional layer is attached to the second support layer on a side thereof remote from the PTFE layer, which second functional layer is also used for cleaning contaminants other than particulate matter.

In an alternative embodiment, the first functional layer and the second functional layer are each used for cleaning different pollutants.

In an alternative embodiment, one of the first functional layer and the second functional layer is an antibacterial layer, and the other is a harmful gas removal layer; the harmful gas removing layer is a formaldehyde removing layer, a VOC removing layer, an ammonia gas removing layer, a nitrogen dioxide removing layer, a sulfur dioxide removing layer, an acetaldehyde removing layer or an acetic acid removing layer.

In an alternative embodiment, the first support layer is a PET nonwoven layer, a PP nonwoven layer or a glass fiber layer.

In a second aspect, the present invention provides an air purifier, including the PTFE filter of any one of the preceding embodiments, just the first functional layer is provided on the windward side facing the airflow direction.

The embodiment of the utility model provides a beneficial effect is:

this PTFE filter media is used for purifying the particulate matter including the PTFE layer, first supporting layer and the first functional layer that connect gradually, PTFE layer, and first functional layer is used for purifying the pollutant except the particulate matter. One side through keeping away from the PTFE layer at first supporting layer adds first functional layer, can be so that this PTFE filter media not only can purify the particulate matter, but also can purify the pollutant except the particulate matter, for example harmful gas, microorganism etc. to effectively improve the purifying effect of this PTFE filter media.

The air purifier comprises the PTFE filter material, and has the characteristics of wide purification range and good purification effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a PTFE filter according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of another PTFE filter according to the first embodiment of the present invention;

FIG. 3 is a schematic structural view of a PTFE filter according to a second embodiment of the present invention;

FIG. 4 is a schematic structural view of a PTFE filter according to a third embodiment of the present invention;

fig. 5 is a schematic structural view of a PTFE filter according to a fourth embodiment of the present invention.

The icon is 100-PTFE filter material; 102-a base unit; 110 — a first functional layer; 120-a first support layer; 130-a PTFE layer; 140-a second support layer; 150-a second functional layer; 160-antibacterial layer; 162-a first PET non-woven layer; 164-a second PET nonwoven layer; 166-formaldehyde removal layer; 170-removing the sulfur dioxide layer; 172-PET non-woven fabric layer; 180-removing the nitrogen dioxide layer.

Detailed Description

PTFE (polytetrafluoroethylene) membrane is a superhydrophobic polymer membrane, and has great application potential in the aspect of air filtration removal. PTFE membranes do not have sufficient strength and stiffness to support strong filtration pressures themselves and often require additional support materials to exert filtration capacity, such as PET nonwovens and the like.

However, the PTFE itself has a good purifying effect on the particulate matter, but has no purifying effect on other pollutants (harmful gases, microorganisms, etc.), so the PTFE filter material can only purify the particulate matter, but not other pollutants.

In view of the above, an embodiment of the utility model provides a new PTFE filter media, it can purify other pollutants except the particulate matter through addding the functional formula to improve purifying effect.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment:

referring to fig. 1, an embodiment of the present invention provides a PTFE filter material 100, which can be used in a purification device such as an air purifier to filter fluid such as air. This PTFE filter media is including the PTFE layer 130, first supporting layer 120 and the first functional layer 110 that connect gradually, and PTFE layer 130 is used for purifying the particulate matter, and first functional layer 110 is used for purifying the pollutant except the particulate matter. Through addding first functional layer 110 for this PTFE filter material 100 also has the purifying effect to other pollutants except having the purifying effect to the particulate matter.

Wherein the PTFE layer 130 is coated on the first support layer 120 by hot pressing. The first support layer 120 can be of different materials and constructions as desired, so long as it has sufficient strength and stiffness to support the PTFE layer 130 and the first functional layer 110. In this embodiment, the first supporting layer 120 is a non-woven fabric layer, and may be a PET (polyester resin) non-woven fabric layer. Of course, in other embodiments, the first support layer 120 may also be a PP (Polypropylene) non-woven fabric layer or a fiberglass layer.

The first functional layer 110 can be made of different materials and structures as required to achieve the purification effect on different pollutants.

Alternatively, the first functional layer 110 is a harmful gas removal layer, which can purify harmful gas. Further, the harmful gas removing layer is a formaldehyde removing layer, a VOC removing layer, an ammonia gas removing layer, a nitrogen dioxide removing layer, a sulfur dioxide removing layer, an acetaldehyde removing layer or an acetic acid removing layer. Remove the formaldehyde layer and can purify formaldehyde, remove the VOC layer and can purify VOC, remove the ammonia gas layer and can purify the ammonia, remove the nitrogen dioxide layer and can purify nitrogen dioxide, remove the sulfur dioxide layer and can purify sulfur dioxide, remove the acetaldehyde layer and can purify acetaldehyde, remove the acetic acid layer and can purify acetic acid. Of course, in other embodiments, the first functional layer 110 may also be an antibacterial layer, which can purify microorganisms.

The first functional layer 110 may be applied to the first support layer 120 using different processes as desired. In this embodiment, the first functional layer 110 is applied to the first support layer 120 by spraying, laminating, dipping, knife coating, printing, or deposition.

Further, the three-layer structure composed of the PTFE layer 130, the first support layer 120, and the first functional layer 110 may be used as one basic unit 102 of the PTFE filter medium 100, and the functions of the PTFE filter medium 100 may be expanded by combining other layer structures with the basic unit 102.

Referring to fig. 2, in the embodiment, the PTFE filter 100 further includes a second supporting layer 140 and a second functional layer 150, the second supporting layer 140 is connected to a side of the PTFE layer 130 away from the first supporting layer 120, the second functional layer 150 is connected to a side of the second supporting layer 140 away from the PTFE layer 130 (i.e., the second functional layer 150, the second supporting layer 140, the PTFE layer 130, the first supporting layer 120, and the first functional layer 110 are sequentially connected), and the second functional layer 150 is also used for purifying contaminants except for particles.

The first functional layer 110 and the second functional layer 150 are respectively used for purifying different pollutants, thereby expanding the purification range of the PTFE filter material 100 and improving the purification effect. In this embodiment, one of the first functional layer 110 and the second functional layer 150 is an antibacterial layer, and the other is a harmful gas removing layer. That is, the first functional layer 110 is an antibacterial layer, and the second functional layer is a harmful gas removing layer; or the first functional layer 110 is a harmful gas removing layer and the second functional layer 150 is an antibiotic layer. Thus, the PTFE filter 100 has the effect of purifying harmful gases and microorganisms simultaneously.

Of course, the PTFE filter 100 may include only the base unit 102, and the second support layer 140 and the second functional layer 150 are not provided.

The PTFE filter material 100 has the following usage principle and process:

in operation, when the PTFE filter 100 includes only the base unit 102 (as shown in fig. 1), the first functional layer 110 serves as an air inlet surface facing the atmosphere, and the PTFE layer 130 serves as an air outlet surface facing the purification target. The air passes through the first functional layer 110, the first support layer 120 and the PTFE layer 130 in sequence, and when passing through the first functional layer 110, other pollutants in the air, such as harmful gases, microorganisms and the like, except for particulate matters, are filtered and removed, and when passing through the PTFE layer 130, the particulate matters in the air are filtered and removed, so that relatively clean air is obtained.

When the PTFE filter 100 further includes a second supporting layer 140 and a second functional layer 150 (as shown in fig. 2), the first functional layer 110 serves as an air inlet surface facing the atmosphere, and the second functional layer 150 serves as an air outlet surface facing the purification object. The air passes through the first functional layer 110, the first support layer 120, the PTFE layer 130, the second support layer 140 and the second functional layer 150 in sequence, and when passing through the first functional layer 110, other pollutants in the air except for particulate matters, such as harmful gases, microorganisms and the like, are filtered and removed, when passing through the PTFE layer 130, the particulate matters in the air are filtered and removed, when passing through the second functional layer 150, other pollutants in the air except for particulate matters are filtered and removed again, such as microorganisms in the air of the first functional layer 110 are filtered and removed, and when passing through the second functional layer 150, harmful gases in the air are filtered and removed, so that relatively clean air is obtained.

This PTFE filter media 100 is including the PTFE layer 130, first supporting layer 120 and the first functional layer 110 that connect gradually, and PTFE layer 130 is used for purifying the particulate matter, and first functional layer 110 is used for purifying the pollutant except the particulate matter. Through add first functional layer 110 in one side of first supporting layer 120 keeping away from PTFE layer 130, can make this PTFE filter media 100 not only can purify the particulate matter, but also can purify the pollutant except the particulate matter, for example harmful gas, microorganism etc to effectively improve this PTFE filter media 100's purifying effect.

Second embodiment:

referring to fig. 3, an embodiment of the present invention provides a PTFE filter material 100, which includes an antibacterial layer 160, a first PET non-woven fabric layer 162, a PTFE layer 130, a second PET non-woven fabric layer 164, and a formaldehyde-removing layer 166, which are sequentially connected. The antibacterial layer 160 can effectively sterilize bacteria, and inhibit microorganisms attached to the particles from being enriched on the surface of the PTFE layer 130, such as staphylococcus aureus, staphylococcus albus, escherichia coli, etc., by the silver ion layer. The formaldehyde removal layer 166 is effective in removing formaldehyde gas. The PTFE layer 130 is effective in removing particulate contaminants.

The preparation method of the PTFE filter material 100 comprises the following steps:

coating the PTFE layer 130 on the first PET non-woven fabric layer 162 by hot pressing, and then coating the antibacterial formulated chemical on the first PET non-woven fabric layer 162 by a printing and dyeing process to form the antibacterial layer 160; the formaldehyde removing layer 166 is formed on the second PET non-woven fabric layer 164 by printing the formaldehyde removing formulation agent on the second PET non-woven fabric layer 164, and finally the second PET non-woven fabric layer 164 is coated on the side of the PTFE layer 130 far from the first PET non-woven fabric layer 162 by hot pressing, thereby obtaining the PTFE filter medium 100.

The working principle and the process of the PTFE filter material 100 are as follows:

in operation, the antimicrobial layer 160 is oriented toward the atmosphere as an air inlet surface, and the formaldehyde removing layer 166 is oriented toward the purification object as an air outlet surface. The air passes through the antibacterial layer 160, the first PET non-woven fabric layer 162, the PTFE layer 130, the second PET non-woven fabric layer 164 and the formaldehyde removing layer 166 in sequence, microorganisms in the air are filtered and removed when passing through the antibacterial layer 160, particulate matters in the air are filtered and removed when passing through the PTFE layer 130, and formaldehyde in the air is filtered and removed when passing through the formaldehyde removing layer 166, so that relatively clean air is obtained finally.

In order to detect the purifying effect of the PTFE filter material 100 provided by the embodiment, the common PTFE filter material (the product structure is a 3-layer structure including the PET layer, the PTFE layer, and the PET layer sequentially connected from bottom to top) and the PTFE filter material 100 provided by the embodiment are folded into a filter net, and the filter net is installed on an air purifier with an air volume of 500-600m3/h, and the test is performed according to the antibacterial, degerming and purifying function "plate counting method" and GB/T18801-2015 "air purifier of GB 21551.2-2010 household and similar-purpose electrical appliances, and the results are shown in the following table:

TABLE 1

As can be seen from the results in table 1, compared with the common PTFE filter material 100, the PTFE filter material 100 provided in this embodiment has the advantages that after loading the antibacterial and formaldehyde-removing formula, the grammage, efficiency and resistance of the filter material do not change significantly, but has good formaldehyde-removing performance and antibacterial performance, which are far better than those of the common PTFE filter material.

The third embodiment:

referring to fig. 4, an embodiment of the present invention provides a PTFE filter material 100, which includes a sulfur dioxide removing layer 170, a PET non-woven fabric layer 172, and a PTFE layer 130 connected in sequence.

the PTFE layer 130 is coated on the PET non-woven fabric layer 172 by hot pressing, and then the sulfur dioxide removing formulation is loaded on the PET non-woven fabric layer 172 by a spraying process to form the sulfur dioxide removing layer 170, thereby obtaining the PTFE filter 100 of the present embodiment.

during operation, remove sulfur dioxide layer 170 and regard as the air inlet face, towards the atmosphere direction, PTFE layer 130 is as the air outlet face, towards the purification object. The air passes through in proper order except that sulfur dioxide layer 170, PET non-woven fabrics layer 172, PTFE layer 130, when passing through except that sulfur dioxide layer 170, sulfur dioxide in the air can be filtered and is detached, when passing through PTFE layer 130, particulate matter in the air can be filtered and is detached, obtains relatively clean air at last.

In order to detect the purification effect of the PTFE filter 100 provided in this embodiment, the PTFE filter 100 provided in this embodiment is folded into a filter net, and is installed on an air purifier with an air volume of 500-:

TABLE 2

As can be seen from the results in table 2, the PTFE filter 100 provided in this example, which carries the sulfur dioxide removing formulation, has a good sulfur dioxide removing performance, although the efficiency and resistance do not change significantly depending on the grammage of the filter, as compared to the conventional PTFE filter.

The fourth embodiment:

referring to fig. 5, an embodiment of the present invention provides a PTFE filter material 100, which includes a nitrogen dioxide removing layer 180, a PET non-woven fabric layer 172, and a PTFE layer 130, which are sequentially connected.

the PTFE layer 130 is coated on the PET non-woven fabric layer 172 by hot pressing, and then the nitrogen dioxide removing formulation is loaded on the PET non-woven fabric layer 172 by a spraying process to form the nitrogen dioxide removing layer 180, thereby obtaining the PTFE filter material 100 of the present embodiment.

during operation, remove nitrogen dioxide layer 180 as the air inlet face, towards the atmosphere direction, PTFE layer 130 is as the air outlet face, towards the purification object. The air passes through the nitrogen dioxide removing layer 180, the PET non-woven fabric layer 172 and the PTFE layer 130 in sequence, when passing through the nitrogen dioxide removing layer 180, nitrogen dioxide in the air can be filtered and removed, when passing through the PTFE layer 130, particulate matters in the air can be filtered and removed, and finally relatively clean air is obtained.

TABLE 3

As is clear from the results in table 3, the PTFE filter medium 100 of the present example, which carries the nitrogen dioxide removing formulation, has a good nitrogen dioxide removing performance, although the efficiency and the resistance do not change significantly depending on the grammage of the filter medium, as compared to the conventional PTFE filter medium.

Fifth embodiment:

the embodiment of the utility model provides an air purifier, including the PTFE filter media 100 that any preceding embodiment provided, just first functional layer sets up in being used for towards the windward side of air current direction, and this air purifier has the wide, effectual characteristics of purification scope.

Finally, it should be noted that the number of layers of the coated PET film (i.e., the multilayer arrangement) can be increased according to the efficiency requirements of different filter materials in the PTFE filter material 100, so as to improve the efficiency of the filter material, and the description thereof is omitted.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a PTFE filter media which characterized in that, is including the PTFE layer, first supporting layer and the first functional layer that connect gradually, the PTFE layer is used for purifying the particulate matter, first functional layer is used for purifying the pollutant except the particulate matter.

2. The PTFE filter of claim 1, wherein the first functional layer is a noxious gas removal layer, and the noxious gas removal layer is a formaldehyde removal layer, a VOC removal layer, an ammonia removal layer, a nitrogen dioxide removal layer, a sulfur dioxide removal layer, an acetaldehyde removal layer, or an acetic acid removal layer.

3. The PTFE filter of claim 1, wherein the first functional layer is an antimicrobial layer.

4. The PTFE filter of any of claims 1-3, wherein the first functional layer is applied to the first support layer; the PTFE layer is coated on the first support layer through hot pressing.

5. The PTFE filter of claim 4, wherein the first functional layer is applied to the first support layer by spraying, laminating, dipping, knife coating, printing, or deposition.

6. The PTFE filter of claim 1, further comprising a second support layer attached to the PTFE layer on a side thereof remote from the first support layer and a second functional layer attached to the second support layer on a side thereof remote from the PTFE layer, the second functional layer also being configured to purify contaminants other than particulate matter.

7. The PTFE filter of claim 6, wherein the first functional layer and the second functional layer are each used to purify from different contaminants.

8. The PTFE filter of claim 7, wherein one of the first functional layer and the second functional layer is an antimicrobial layer and the other is a noxious gas removal layer; the harmful gas removing layer is a formaldehyde removing layer, a VOC removing layer, an ammonia gas removing layer, a nitrogen dioxide removing layer, a sulfur dioxide removing layer, an acetaldehyde removing layer or an acetic acid removing layer.

9. The PTFE filter of claim 1, wherein the first support layer is a PET non-woven fabric layer, a PP non-woven fabric layer, or a fiberglass layer.

10. An air cleaner, characterized by comprising the PTFE filter of any one of claims 1 to 9; and the first functional layer is arranged on a windward side facing the airflow direction.