Deodorizing filter screen

Abstract

The utility model relates to a filter screen, in particular to a deodorizing filter screen, which comprises a support frame, a carbon layer, a low wind resistance filter layer, a composite filter layer and a coarse effect layer are sequentially arranged on the support frame from inside to outside, and the carbon layer comprises an upper protective layer, a lower protective layer and an activated carbon layer arranged between the upper protective layer and the lower protective layer. The upper protection layer is in contact connection with the supporting frame, and one end face, away from the activated carbon layer, of the lower protection layer is connected with the low-wind-resistance filtering layer. The air purifier has the advantages of being simple in structure, reasonable in design, capable of conducting secondary interception on harmful gas and particulate matter, good in harmful gas and particulate matter removing effect and good in experience feeling when a user uses the air purifier.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter screen, in particular to a deodorization filter screen. BACKGROUND

[0002] The filter screen is mainly used for air conditioner, purifier, range hood, air filter, dehumidifier and dust remover, and is suitable for various filtering, dust removing and separating requirements, and is suitable for filtering in petroleum, chemical industry, mineral, food, pharmaceutical and coating industries. The filter screen for harmful gas mainly uses porous filter material as adsorption carrier and removes harmful gas by adsorption. The conventional method is to use activated carbon for adsorption. The activated carbon has poor adsorption effect and cannot effectively intercept particulate matter and harmful gas. The existing filter screen cannot realize layered adsorption of harmful substances such as acid and alkali during adsorption, and the user experience is poor. In view of the problem, the inventor designs a deodorization filter screen. SUMMARY

[0003] The utility model discloses a deodorization filter screen, which has the advantages of simple structure, reasonable design, secondary interception of harmful gas and particulate matter, good harmful gas and particulate matter removal effect, and good user experience, and solves the problems raised in the above technical background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a deodorization filter screen, which comprises a support frame, the support frame is sequentially provided with a carbon layer, a low wind resistance filter layer, a composite filter layer and a coarse efficiency layer from inside to outside, wherein the carbon layer comprises an upper protective layer, a lower protective layer and an activated carbon layer arranged between the upper protective layer and the lower protective layer, the upper protective layer is in contact with the support frame, and the lower protective layer is connected with the low wind resistance filter layer away from the end face of the activated carbon layer.

[0005] Preferably, the support frame is made of PP material.

[0006] Preferably, the carbon layer is located between the low wind resistance filter layer and the composite filter layer.

[0007] Preferably, the upper protective layer is made of PP material, and a plurality of mesh holes are arranged on the upper protective layer, and the inner diameter of the mesh hole is 2mm-20mm.

[0008] Preferably, the lower protective layer is made of black polyester mesh fabric.

[0009] Preferably, the thickness of the activated carbon layer is 1mm-12mm, and the material of the activated carbon layer is activated carbon, which is formed on the upper protective layer and the lower protective layer by adhesion process.

[0010] Preferably, the low-resistance filter layer is made of PU cotton, PET, PP material, carbon layer, columnar carbon and resin composite layer, columnar carbon and molecular sieve composite layer, or resin and molecular sieve composite layer, and a deodorizing agent is provided on the low-resistance filter layer.

[0011] Preferably, the thickness of the composite filter layer is between 0.4 mm and 2.5 mm, and the composite filter layer is formed by melt-blowing of an upper PET layer, a PP layer and a lower PET layer.

[0012] Preferably, the coarse layer is an electrostatic cotton composite plastic mesh with a thickness between 0.5 mm and 5 mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model provides a deodorizing filter, which includes a support frame. From the inside out, a carbon layer, a low-resistance filter layer, a composite filter layer, and a coarse-efficiency layer are sequentially arranged on the support frame. The overall structure is simple and reasonably designed. The support frame supports and protects the filter. The carbon layer includes an upper protective layer, a lower protective layer, and an activated carbon layer disposed between the upper and lower protective layers. The thickness of the activated carbon layer is between 1mm and 12mm, and the material of the activated carbon layer is activated carbon. This activated carbon is formed on the upper and lower protective layers using an adhesion process. The activated carbon layer effectively removes formaldehyde, toluene, TVOC, and various gases with a removal rate of up to 90% within one hour. By placing a deodorizing agent on the low-resistance filter layer, a second layer of interception of harmful gases can be achieved. The composite filter layer consists of an upper PET layer, a PP layer, and a lower PE layer. The T-layer is a melt-blown composite molding process, with a 0.3µm composite filter layer having a filtration efficiency between 65% and 99.97%, a formaldehyde removal rate of >90%, and an odor removal rate of >90%. This serves as the first line of defense against harmful gases and a second line of defense against particulate matter. The coarse layer is an electrostatic cotton composite plastic mesh, with a 0.3µm coarse layer having a filtration efficiency between 45% and 90%. The electrostatic cotton can better adsorb particles larger than 0.5 microns, providing the first line of defense against particulate matter. Therefore, the filter of this invention can perform secondary interception of harmful gases and particulate matter, resulting in good removal of harmful gases and particulate matter and a superior user experience. It is worthy of widespread promotion and application. The filter of this invention can adsorb acidic, alkaline, and other harmful substances in layers, making it highly practical. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention;

[0016] Figure 2 This utility model Figure 1 Enlarged view of A in the middle;

[0017] Figure 3This is a cross-sectional view of the composite filter layer of this utility model;

[0018] Figure 4 This is a cross-sectional view of another embodiment of the present invention;

[0019] Figure 5 This is a cross-sectional view of Embodiment 3 of the present invention;

[0020] Figure 6 This utility model Figure 5 A magnified view of B in the middle.

[0021] The reference numerals and names in the figure are as follows:

[0022] 1. Support frame; 2. Carbon layer; 21. Upper protective layer; 22. Lower protective layer; 23. Activated carbon layer; 24. Mesh; 3. Low wind resistance filter layer; 31. Deodorizer; 4. Composite filter layer; 41. Upper PET layer; 42. PP layer; 43. Lower PET layer; 5. Coarse layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0025] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0026] Example 1:

[0027] Please see Figure 1 This utility model provides an embodiment of a deodorizing filter, which includes a support frame 1. From the inside out, the support frame 1 is sequentially arranged with a carbon layer 2, a low-resistance filter layer 3, a composite filter layer 4, and a coarse layer 5. The support frame 1 is made of PP material and, in this embodiment, has a hollow cylindrical structure. The support frame 1 mainly supports the filter. The carbon layer 2 effectively removes formaldehyde, toluene, TVOC, and various gases with a removal rate of up to 90% within one hour. The low-resistance filter layer 3 provides a second layer of interception for harmful gases. The composite filter layer 4 provides a first layer of interception for harmful gases and also provides a second layer of interception for particulate matter. The coarse layer 5 is an electrostatic cotton composite plastic mesh with a thickness between 0.5mm and 5mm. The 0.3μm coarse layer 5 has a filtration efficiency between 45% and 90%. Simultaneously, the electrostatic cotton composite plastic mesh can better adsorb particles larger than 0.5 micrometers, providing a first layer of interception for particulate matter.

[0028] Please see Figure 2 The carbon layer 2 in the figure includes an upper protective layer 21, a lower protective layer 22, and an activated carbon layer 23 disposed between the upper protective layer 21 and the lower protective layer 22. The upper protective layer 21 is in contact with the support frame 1, and the lower protective layer 22 is connected to the low wind resistance filter layer 3 at one end away from the activated carbon layer 23.

[0029] Specifically, the upper protective layer 21 is made of PP material and has a number of mesh holes 24. The inner diameter of the mesh holes 24 is between 2mm and 20mm. In specific implementation, PP material with a basis weight of 30-80g / ㎡ is preferred as the upper protective layer 21.

[0030] Specifically, the lower protective layer 22 is made of black polyester mesh fabric. The lower protective layer 22 is mainly used to protect the low wind resistance filter layer 3 and prevent the activated carbon layer 23 from damaging the low wind resistance filter layer 3.

[0031] Specifically, the thickness of the activated carbon layer 23 is between 1mm and 12mm, and the material of the activated carbon layer 23 is activated carbon. The activated carbon is formed on the upper protective layer 21 and the lower protective layer 22 by an adhesion process. The weight of the activated carbon layer 23 is 50-400g / piece, and the removal rate of formaldehyde, toluene, TVOC and various gases reaches 90% in one hour.

[0032] Please refer to it again. Figure 2 In the figure, the low-resistance filter layer 3 is made of PU cotton, PET, PP material, carbon layer, columnar carbon and resin composite layer, columnar carbon and molecular sieve composite layer, or resin and molecular sieve composite layer. A deodorizing agent 31 is provided on the low-resistance filter layer 3. In specific implementation, the low-resistance filter layer 3 is preferably made of PU cotton. The deodorizing agent 31 is made by soaking ammonia removal agent in ion exchange resin and processing it on PU cotton or PET polyester. It can remove ammonia, alkaline gases and odors, and play a second interception role for the filter screen to remove harmful gases.

[0033] Please see Figure 3 The thickness of the composite filter layer 4 in the figure is between 0.4mm and 2.5mm. The composite filter layer 4 is formed by melt-blowing of the upper PET layer 41, PP layer 42 and lower PET layer 43, with a basis weight of 80-150g / ㎡. Under the condition of air flow of 32L / min, the filtration efficiency of the 0.3um composite filter layer 4 is between 65% and 99.97%, with a formaldehyde removal rate of >90% and an odor removal rate of >90%. It plays the first role in intercepting harmful gases to the human body and also plays the second role in intercepting particulate matter. In other embodiments, the composite filter layer 4 can be formed by composite molding of PET layer 41 and PP layer 42.

[0034] Please refer to it again. Figures 1 to 3 The filter obtained by adopting the above technical solution has a simple overall structure and reasonable design. It can perform secondary interception of harmful gases and particulate matter, with good removal effect and excellent user experience. It is worth promoting and applying.

[0035] Example 2:

[0036] Please see Figure 4 Another embodiment of this utility model provides an odor-removing filter. This embodiment is basically the same as the first embodiment, except that the carbon layer 2 is located between the low wind resistance filter layer 3 and the composite filter layer 4, and the support frame 1 in this embodiment is flat. Other parts not explained in this embodiment are referred to the first embodiment and will not be repeated here.

[0037] Example 3:

[0038] Please see Figure 5 and Figure 6This embodiment is basically the same as the first embodiment, except that the low wind resistance filter layer 3 is completely wrapped by the lower protective layer 22. Other parts of this embodiment that are not explained are the same as those in the first embodiment, and will not be repeated here.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A deodorizing filter screen, characterized by: The application relates to a support frame (1) which is provided with, from inside to outside, a carbon layer (2), a low-wind-resistance filter layer (3), a composite filter layer (4) and a coarse-effect layer (5), wherein the carbon layer (2) comprises an upper protective layer (21), a lower protective layer (22) and an activated carbon layer (23) arranged between the upper protective layer (21) and the lower protective layer (22), the upper protective layer (21) is connected with the support frame (1), and the lower protective layer (22) is connected with the low-wind-resistance filter layer (3) away from an end surface of the activated carbon layer (23).

2. The deodorizing filter screen according to claim 1, wherein: The support frame (1) is made of PP material or metal material.

3. The deodorizing filter screen according to claim 1, wherein: The carbon layer (2) is arranged between the low-wind-resistance filter layer (3) and the composite filter layer (4).

4. The deodorizing filter screen of claim 1, wherein: The upper protective layer (21) is made of PP material and is provided with a plurality of mesh holes (24) with an inner diameter of 2-20 mm.

5. The deodorizing filter screen of claim 1, wherein: The lower protective layer (22) is made of black polyester mesh cloth.

6. The deodorizing filter screen of claim 1, wherein: The thickness of the activated carbon layer (23) is 1-12 mm, and the material of the activated carbon layer (23) is activated carbon which is formed on the upper protective layer (21) and the lower protective layer (22) by using an adhesion process.

7. The deodorizing filter screen of claim 1, wherein: The low-wind-resistance filter layer (3) is made of PU cotton, PET, PP material, carbon layer, columnar carbon and resin composite layer, columnar carbon and molecular sieve composite layer or resin and molecular sieve composite layer, and is provided with a deodorant (31).

8. The deodorizing filter screen of claim 1, wherein: The thickness of the composite filter layer (4) is 0.4-2.5 mm, and the composite filter layer (4) is formed by melt blowing and compounding an upper PET layer (41), a PP layer (42) and a lower PET layer (43).

9. The deodorizing filter screen of claim 1, wherein: The coarse-effect layer (5) is an electrostatic cotton composite plastic net with a thickness of 0.5-5 mm.

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