Hepa filter assembly

Abstract

The utility model discloses a hepa filter component, which comprises an outer frame, the outer frame is provided with a mounting cavity for mounting a filter layer, the outer surface of the filter layer and / or the outer surface of the outer frame are / is detachably provided with a rough filter layer, and the hole gap of the rough filter layer is larger than the hole gap of the filter layer. The hepa filtering assembly is reasonable in structure, the rough filtering layer is detachably arranged, when the air permeability effect of the hepa filtering assembly is reduced, the rough filtering layer can be torn down, blocked large-particle dust and small leaves are synchronously removed, the cleaning frequency of the hepa filtering assembly is reduced, and convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of HEPA filtration, in particular to a HEPA filtration component. Background Art

[0002] HEPA filtration (high-efficiency air filtration) is commonly used in various air filtration scenarios, such as automobile air conditioning filters, vacuum cleaner filters, etc. Therefore, the outermost layer of the HEPA filter component is prone to accumulate large particles of dust and even smaller leaves, affecting the air permeability of the HEPA filter component. Therefore, the HEPA filter component needs to be removed for cleaning or directly replaced. The cleaning of the HPA filter component is time-consuming and labor-intensive, and it needs to be dried before it can be used again. Directly replacing the HPA filter component is more expensive, and the original HPA filter component has not lost its filtering effect.

[0003] Therefore, it is necessary to improve the HEPA filtering assembly in the prior art. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects in the prior art and provide a HEPA filter component which is detachably provided with a coarse filter layer. When the air permeability effect of the HEPA filter component is reduced, the coarse filter layer can be torn off and the blocked large particles of dust and smaller leaves can be removed simultaneously, thereby reducing the number of times the HEPA filter component is cleaned and improving convenience.

[0005] In order to achieve the above technical effects, the technical solution of the utility model is: a hepa filter component, comprising an outer frame, the outer frame is provided with an installation cavity for installing a filter layer, the outer surface of the filter layer and / or the outer surface of the outer frame is detachably provided with a coarse filter layer, and the pore gap of the coarse filter layer is larger than the pore gap of the filter layer.

[0006] A preferred technical solution is that a dust collecting chamber is provided on the outer side of the coarse filter layer.

[0007] A preferred technical solution is that the outer frame is provided with a receiving cavity for receiving the coarse filter layer, and the coarse filter layer and the dust collecting cavity are located within the range of the receiving cavity.

[0008] A preferred technical solution is that the coarse filter layer is provided with several layers, and two adjacent coarse filter layers are detachably connected.

[0009] A preferred technical solution is that the outer circumferences of two adjacent coarse filter layers are bonded together.

[0010] A preferred technical solution is that the coarse filter layer is provided with an easy-tear strip.

[0011] The preferred technical solution is that the filter layer includes an outer skeleton layer, an activated carbon filter layer, a hepa filter layer and an inner skeleton layer which are sequentially stacked and connected from the outside to the inside.

[0012] A preferred technical solution is that the coarse filter layer is a non-woven fabric layer.

[0013] The preferred technical solution is that the thickness of the outer skeleton layer is 0.3-0.4mm, the thickness of the activated carbon filter layer is 1-2mm, the thickness of the hepa filter layer is 0.1-0.2mm, the thickness of the inner skeleton layer is 0.3-0.4mm, and the thickness of the coarse filter layer is 3-5mm.

[0014] The advantages and beneficial effects of the utility model are that the HEPA filter component of the utility model has a reasonable structure and is detachably provided with a coarse filter layer. When the air permeability effect of the HEPA filter component is reduced, the coarse filter layer can be torn off and the blocked large particles of dust and smaller leaves can be removed simultaneously, thereby reducing the number of cleaning times of the HEPA filter component, improving convenience, and reducing customer usage costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the hepa filter assembly of the utility model;

[0016] Figure 2 yes Figure 1 Explosion diagram of

[0017] Figure 3 It is a schematic diagram of the layered structure of the coarse filter layer and the filter layer;

[0018] In the figure: 1. outer frame; 11. installation cavity; 12. accommodating cavity; 2. filter layer; 21. outer skeleton layer; 22. activated carbon filter layer; 23. hepa filter layer; 24. inner skeleton layer; 3. coarse filter layer; 31. dust collecting cavity. DETAILED DESCRIPTION

[0019] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0020] Example

[0021] like Figure 1-3 As shown, the HEPA filter assembly of the embodiment includes an outer frame 1, the outer frame 1 is provided with an installation cavity 11 for installing a filter layer 2, the outer surface of the filter layer 2 and / or the outer surface of the outer frame 1 is detachably provided with a coarse filter layer 3, and the pore gap of the coarse filter layer 3 is larger than the pore gap of the filter layer 2.

[0022] Through such a design, the coarse filter layer 3 is located on the outer surface of the filter layer 2, and large particles of dust and smaller leaves, etc. will be preliminarily filtered by the coarse filter layer 3. The coarse filter layer 3 and the outer frame 1 or the filter layer 2 can be separated. When the filtering effect is reduced, it is only necessary to tear the coarse filter layer 3 and the filter layer 2 apart to separate the large particles of dust and smaller leaves from the filter layer 2, thereby extending the service life of the filter layer 2 and reducing the number of times the HEPA filter component needs to be cleaned, thereby improving the convenience of users using the HEPA filter component and reducing the user's cost of use.

[0023] Furthermore, a dust collecting chamber 31 is provided on the outer side of the coarse filter layer 3 .

[0024] Through such a design, large particles of dust and smaller leaves will fall into the dust collecting chamber 31, avoiding dust flying and leaves falling when the user tears off the coarse filter layer 3, thereby improving the user experience of customers when cleaning the HEPA filter component.

[0025] Specifically, the outer frame 1 is provided with a receiving cavity 12 for receiving the coarse filter layer 3 , and the coarse filter layer 3 and the dust collecting cavity 31 are located within the range of the receiving cavity 12 .

[0026] This design can prevent the coarse filter layer 3 from protruding out of the housing 1, thereby preventing the normal installation of the HEPA filter assembly from being affected.

[0027] Furthermore, the coarse filter layer 3 is provided with several layers, and two adjacent coarse filter layers 3 are detachably connected.

[0028] Through such a design, the service life of the HEPA filter assembly is further extended. When the HEPA filtering effect is reduced, the HEPA filtering effect can be initially restored by simply tearing off the coarse filter layer 3 layer by layer; the dust collecting chamber 31 of the coarse filter layer 3 can be connected layer by layer without affecting the stacking of the coarse filter layers 3.

[0029] Specifically, the outer circumferences of two adjacent coarse filter layers 3 are bonded together.

[0030] With such a design, if each layer of the coarse filter layer 3 is fully bonded, not only will the peeling difficulty be increased, but the adhesive layer will also affect the filtering effect.

[0031] Furthermore, the coarse filter layer 3 is provided with an easy-tear strip.

[0032] Such a design improves the convenience of tearing off the coarse filter layer 3.

[0033] Specifically, the filter layer 2 includes an outer skeleton layer 21, an activated carbon filter layer 22, a hepa filter layer 23 and an inner skeleton layer 24 which are sequentially stacked and connected from the outside to the inside.

[0034] Through such a design, the outer skeleton layer 21 and the inner skeleton layer 24 improve the strength of the coarse filter layer 2. The outer skeleton layer 21 and the inner skeleton layer 24 are both made of PET material. The activated carbon filter layer 22 and the hepa filter layer 23 have a filtering effect. The hepa filter layer 23 is made of PP material.

[0035] Specifically, the coarse filter layer 3 is a non-woven fabric layer.

[0036] Through such a design, the non-woven fabric layer can achieve the purpose of coarse filtration.

[0037] Specifically, the thickness of the outer skeleton layer 21 is 0.35 mm, the thickness of the activated carbon filter layer 22 is 1.5 mm, the thickness of the hepa filter layer 23 is 0.15 mm, the thickness of the inner skeleton layer 24 is 0.35 mm, and the thickness of the coarse filter layer 3 is 4 mm.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A HEPA filter assembly, It is characterized in that Comprising an outer frame (1), the outer frame (1) being provided with an installation cavity (11) for installing a filter layer (2), the outer surface of the filter layer (2) and / or the outer surface of the outer frame (1) being detachably provided with a coarse filter layer (3), the pore gap of the coarse filter layer (3) being larger than the pore gap of the filter layer (2); A dust collecting chamber (31) is provided on the outer side of the coarse filter layer (3).

2. The HEPA filter assembly according to claim 1, It is characterized in that The outer frame (1) is provided with a receiving cavity (12) for receiving the coarse filter layer (3); the coarse filter layer (3) and the dust collecting cavity (31) are located within the range of the receiving cavity (12).

3. The HEPA filter assembly according to claim 1, It is characterized in that The coarse filter layer (3) is provided with a plurality of layers, and two adjacent coarse filter layers (3) are detachably connected.

4. The HEPA filter assembly according to claim 3, It is characterized in that The outer circumferences of two adjacent coarse filter layers (3) are bonded to each other.

5. The HEPA filter assembly according to claim 4, It is characterized in that The coarse filter layer (3) is provided with an easy-tear strip.

6. The HEPA filter assembly according to claim 1, It is characterized in that The filter layer (2) comprises an outer skeleton layer (21), an activated carbon filter layer (22), a hepa filter layer (23) and an inner skeleton layer (24) which are sequentially stacked and connected from the outside to the inside.

7. The HEPA filter assembly according to claim 1, It is characterized in that The coarse filter layer (3) is a non-woven fabric layer.

8. The HEPA filter assembly according to claim 6, It is characterized in that The thickness of the outer skeleton layer (21) is 0.3-0.4 mm, the thickness of the activated carbon filter layer (22) is 1-2 mm, the thickness of the HEPA filter layer (23) is 0.1-0.2 mm, the thickness of the inner skeleton layer (24) is 0.3-0.4 mm, and the thickness of the coarse filter layer (3) is 3-5 mm.

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