Air filter screen and air purifier
By designing the air filter of the hydrophobic particulate filter part and the hydrophobic odor adsorption part that are stacked, the problem of deformation or performance degradation of the existing air filter after washing is solved, multiple filtration functions and reusable effects are achieved, and user experience and product life are improved.
Patent Information
- Application Number
- CN202420898487.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The existing air filters are prone to deformation or performance deterioration after washing and cleaning, and cannot be reused, resulting in increased usage costs and poor user experience of air filtration purification products.
An air filter network including a layered hydrophobic particulate filter part and a hydrophobic odor adsorption part is designed, and the hydrophobic base layer and the hydrophobic adsorption layer are washed with almost no attenuation of performance.
The multiple filtration functions of the air filter are realized, which improves the air filtering effect and user experience, and extends the life of the air filter through reusability.
Smart Images
Figure CN222956087U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air filtration and purification, in particular to an air filter screen and an air purifier. Background Art
[0002] With the development of society and the improvement of people's living quality, people pay more and more attention to air quality, and more and more people begin to use air filtration and purification products. The filter screen of the filter element is the core unit of the purification product, and the performance of the filter screen determines the purification performance of the air purification product. After the filter screen is used for a period of time, it needs to be cleaned. Washing with water is a cleaning method with good cleaning effect and high efficiency. After the ordinary filter screen is washed with water, it is easy to deform or its performance drops severely. Therefore, the filter element can only be used once and cannot be reused after being washed with water. This increases the use cost of the air filtration and purification product and the user experience is not good. Summary of the Utility Model
[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide an air filter screen and an air purifier, which are used to solve the technical problem that the filter screen in the prior art is easy to deform or its performance drops severely after being washed with water and cannot be reused.
[0004] To achieve the above purpose and other related purposes, the present utility model provides an air filter screen, which includes a hydrophobic particulate matter filtering part and a hydrophobic odor adsorption part arranged in a stacked manner. The hydrophobic odor adsorption part includes a hydrophobic base layer and a hydrophobic odor adsorption layer adhered to the hydrophobic base layer.
[0005] Optionally, the hydrophobic particulate matter filtering part is folded into a pleated shape.
[0006] Optionally, both the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part are in a planar shape or both are in a circular ring shape or both are in a square frame shape. When both the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part are in a planar shape or both are in a square frame shape, the pleat pitch of the hydrophobic particulate matter filtering part is 2.5 mm to 5.5 mm; when both the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part are in a circular ring shape, the inner pleat pitch of the hydrophobic particulate matter filtering part is 1.4 mm to 3.45 mm, and the outer pleat pitch is 3.5 mm to 8.25 mm.
[0007] Optionally, when both the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part are in a planar shape or both are in a square frame shape, the pleat pitch of the hydrophobic particulate matter filtering part is 3.0 mm to 4.0 mm; when both the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part are in a circular ring shape, the inner pleat pitch of the hydrophobic particulate matter filtering part is 2.1 mm to 2.8 mm, and the outer pleat pitch is 4.5 mm to 6 mm.
[0008] Optionally, the number of the hydrophobic odor adsorption parts is multiple layers, and each layer of the hydrophobic odor adsorption parts is stacked along the air flow direction, and the hydrophobic particulate matter filtering part is arranged between any two layers of the hydrophobic odor adsorption parts.
[0009] Optionally, the hydrophobic particulate matter filtering part is arranged on the inner side or the outer side of the hydrophobic odor adsorption part along the air flow direction.
[0010] Optionally, the hydrophobic particulate matter filtering part is arranged on the outer side of the hydrophobic odor adsorption part along the air flow direction.
[0011] Optionally, the hydrophobic odor adsorption layer includes any one or more of activated carbon, molecular sieve, zeolite, and diatom mud.
[0012] Optionally, the number of the hydrophobic odor adsorption layers is two, and they are respectively adhered to both sides of the hydrophobic base layer.
[0013] Optionally, it further includes a dust-proof layer, and the dust-proof layer is arranged on the surface of the air inlet side of the air filter net.
[0014] Optionally, it further includes a frame, the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part are arranged in the frame, and the frame wraps the edges of the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part.
[0015] Optionally, a seal is arranged on the side surface of the frame.
[0016] The present utility model further provides an air purifier, including the air filter net as described above.
[0017] As described above, the air filter net of the present utility model has the following beneficial effects:
[0018] With the structure of the hydrophobic particulate matter filtering part and the hydrophobic odor adsorption part stacked, this solution can not only filter particulate matter in the air, but also adsorb odors in the air. The multiple filtering functions can be achieved through a single air filter net, improving the air filtering effect and user experience. The hydrophobic particulate matter filtering part of this solution can be washed with water, and its performance hardly decays after washing. Through the hydrophobic base layer and the hydrophobic adsorption layer adhered to the hydrophobic base layer, the hydrophobic odor adsorption part can be washed with water, and its performance hardly decays after washing. Therefore, the whole solution can be washed with water, and its performance hardly decays after washing, can be reused, and the service life can be extended. Description of the Drawings
[0019] Figure 1 It is a schematic structural diagram of the hydrophobic particulate matter filtering part of an embodiment of the present utility model;
[0020] Figure 2Schematic diagram of the hydrophobic particulate filter part according to another embodiment of the present utility model;
[0021] Figure 3 Schematic diagram of the hydrophobic odor adsorption part according to an embodiment of the present utility model;
[0022] Figure 4 Schematic diagram of the air filter according to an embodiment of the present utility model;
[0023] Figure 5 Top view of the air purifier according to an embodiment of the present utility model;
[0024] Figure 6 Schematic diagram of the air purifier according to an embodiment of the present utility model;
[0025] Figure 7 Schematic diagram of the air purifier according to another embodiment of the present utility model.
[0026] Description of part numbers
[0027] 1 - Hydrophobic particulate filter part; 11 - Polyester or polyethylene non-woven fabric protective layer; 12 - High molecular nanofiber layer; 13 - Polyester or polyethylene non-woven fabric base layer; 2 - Hydrophobic odor adsorption part; 21 - Hydrophobic base layer; 22 - Hydrophobic adsorption layer; 3 - Frame; 4 - Air purifier. Specific implementation manners
[0028] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.
[0029] It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present utility model. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex. The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy and the purpose that the present utility model can achieve, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description, rather than used to limit the scope in which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present utility model can be implemented.
[0030] Please refer to Figures 1 to 4 , this embodiment provides an air filter, which includes a hydrophobic particulate matter filtering part 1 and a hydrophobic odor adsorption part 2 stacked along the air flow direction. The hydrophobic odor adsorption part 2 includes a hydrophobic base layer 21 and a hydrophobic adsorption layer 22 adhered to the hydrophobic base layer 21. In the prior art, how to obtain the materials of the hydrophobic base layer 21 and the hydrophobic adsorption layer 22 has been disclosed. For example, a deodorizing modifier is used to perform hydrophobic treatment on the hydrophobic adsorption layer 22, and the deodorizing modifier is also prior art. The deodorizing modifier includes, by mass percentage: 5%-10% of an odor-active treatment component, 2%-4% of a hydrophobic modifier, 0.5%-2% of a hydrophobic modification assistant, 85%-92% of water, and 0.5%-1% of a pH regulator. After treatment, the odor-removing active component of the hydrophobic odor adsorption part 2 is protected in the water environment, so as to maintain high activity and stability, so that the hydrophobic odor adsorption part 2 has hydrophobicity, can be washed with water, and the performance hardly decays after washing.
[0031] In this embodiment, through the structure of the hydrophobic particulate filter part 1 and the hydrophobic odor adsorption part 2 arranged in a stacked manner, it can not only filter the particulate matter in the air, but also adsorb the odor in the air. Through a single air filter screen, it can play a multiple filtration role, improving the air filtration effect and user experience. The hydrophobic particulate filter part 1 of this embodiment can be washed with water, and its performance hardly decays after washing. Through the hydrophobic base layer 21 and the hydrophobic adsorption layer 22 adhered to the hydrophobic base layer 21, the hydrophobic odor adsorption part 2 can be washed with water, and its performance hardly decays after washing. Thus, the whole of this embodiment can be washed with water, and its performance hardly decays after washing, can be reused, and can extend the service life of the air filter screen.
[0032] In one embodiment, the hydrophobic particulate filter part 1 includes at least two of a polyester or polyethylene non-woven fabric protective layer 11, a polymer nanofiber layer 12, and a polyester or polyethylene non-woven fabric base layer 13, and the layers of the hydrophobic particulate filter part 1 are arranged in a stacked manner. Specifically, the hydrophobic particulate filter part 1 includes a polyester or polyethylene non-woven fabric protective layer 11 and a polymer nanofiber layer 12 arranged in a stacked manner in the air flow direction; or, the hydrophobic particulate filter part 1 includes a polyester or polyethylene non-woven fabric protective layer 11, a polymer nanofiber layer 12, and a polyester or polyethylene non-woven fabric base layer 13 arranged in a stacked manner in the air flow direction; or, the hydrophobic particulate filter part 1 includes a polymer nanofiber layer 12 and a polyester or polyethylene non-woven fabric base layer 13 arranged in a stacked manner in the air flow direction. The hydrophobic particulate filter part 1 includes a polyester or polyethylene non-woven fabric protective layer 11, a polymer nanofiber layer 12, and a polyester or polyethylene non-woven fabric base layer 13 arranged in a stacked manner in the air flow direction, that is, the hydrophobic particulate filter part 1 includes a polyester or polyethylene non-woven fabric protective layer 11, a polymer nanofiber layer 12, and a polyester or polyethylene non-woven fabric base layer 13 arranged in a stacked manner from the inside to the outside, and the layers of the hydrophobic particulate filter part 1 are compounded by thermal bonding or spraying and coating a hot-melt glue.
[0033] In one embodiment, the polyester or polyethylene non-woven fabric protective layer 11 includes a layer of hydrophobic polyester non-woven fabric or hydrophobic polyethylene non-woven fabric, and the polymer nanofiber layer 12 is a layer of nanofibers obtained by compounding a polymer on a polyester fabric through a hot-melt stretching or electrospinning process. The polyester or polyethylene non-woven fabric base layer 13 includes a layer of non-woven polyester (PET) or polyethylene (PE).
[0034] In one embodiment, as Figure 2As shown, the hydrophobic particulate filter section 1 is folded into a wavy shape with undulations, increasing the unfolded area of the hydrophobic particulate filter section 1 to increase the filtration area of the air filter, thereby improving the overall filtration effect of the air filter. The setting of the pleat spacing of the hydrophobic particulate filter section 1 affects the performance of the air filter. If the spacing is too small, the air resistance is large, resulting in a poor adsorption effect; if the spacing is too large, the contact area between the air and the hydrophobic particulate filter section 1 is small, and the adsorption effect is also poor, affecting the machine noise.
[0035] In one embodiment, both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a planar shape or both are in a circular ring shape. When both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a planar shape, the pleat spacing of the hydrophobic particulate filter section 1 is 2.5 mm to 5.5 mm; when both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a circular ring shape, the inner pleat spacing of the hydrophobic particulate filter section 1 is 1.4 mm to 3.45 mm, and the outer pleat spacing is 3.5 mm to 8.25 mm.
[0036] In one embodiment, when both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a planar shape, the pleat spacing of the hydrophobic particulate filter section 1 is 3.0 mm to 4.0 mm; when both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a circular ring shape, the inner pleat spacing of the hydrophobic particulate filter section 1 is 2.1 mm to 2.8 mm, and the outer pleat spacing is 4.5 mm to 6 mm.
[0037] In one embodiment, the hydrophobic odor adsorption section 2 is folded into a wavy shape with undulations, increasing the unfolded area to increase the filtration area of the air filter, thereby improving the overall filtration effect of the air filter.
[0038] In one embodiment, as Figure 4 shown, the number of the hydrophobic odor adsorption sections 2 is multiple layers, and each layer of the hydrophobic odor adsorption sections 2 is stacked along the air flow direction. The multiple layers of the hydrophobic odor adsorption sections 2 can improve the adsorption effect on the odor in the air, thereby improving the air filtration and purification effect of the air filter. The hydrophobic particulate 1 filter section is disposed between any two layers of the hydrophobic odor adsorption sections 2; or, the hydrophobic particulate 1 filter section can be disposed inside the innermost hydrophobic odor adsorption section 2; or, the hydrophobic particulate 1 filter section can be disposed outside the outermost hydrophobic odor adsorption section 2.
[0039] In one embodiment, the number of the hydrophobic particulate filter sections 1 is multiple layers, and each layer of the hydrophobic particulate filter sections 1 is stacked along the air flow direction. The multiple layers of the hydrophobic particulate filter sections 1 can improve the filtration effect on the particulate matter in the air, thereby improving the air filtration and purification effect of the air filter.
[0040] In one embodiment, the hydrophobic particulate filter section 1 is disposed inside the hydrophobic odor adsorption section 2, that is, the hydrophobic particulate filter section 1 is located inside the air filter. The air to be filtered first passes through the hydrophobic odor adsorption section 2 and then through the hydrophobic particulate filter section 1 to complete filtration and purification.
[0041] In one embodiment, the hydrophobic particulate filter section 1 is disposed outside the hydrophobic odor adsorption section 2 along the air flow direction, that is, the hydrophobic particulate filter section 1 is located outside the air filter. The air to be filtered first passes through the hydrophobic particulate filter section 1 and then through the hydrophobic odor adsorption section 2.
[0042] In one embodiment, as Figure 3 shown, the hydrophobic odor adsorption layer 22 includes any one or more mesoporous materials such as activated carbon, molecular sieve, zeolite, and diatom mud. The modified activated carbon particles are adhered with a binder or coated by an impregnation process to ensure that the activated carbon particles are evenly distributed on the hydrophobic base layer 21 to form the hydrophobic odor adsorption section 2. The mesh shape of the hydrophobic base layer 21 can be quadrilateral, hexagonal, circular, or irregular porous shape.
[0043] In one embodiment, the number of the hydrophobic odor adsorption layers 22 is two, and they are respectively adhered to both sides of the hydrophobic base layer 21 along the air flow direction to improve the odor absorption effect of the hydrophobic odor adsorption section 2.
[0044] In one embodiment, the air filter further includes a dust-proof layer, and the dust-proof layer is disposed on the surface of the air inlet side of the air filter. The surface of the air inlet side of the air filter can also be understood as the outer surface of the air filter. The dust-proof layer is a dust-proof net, and the material of the dust-proof layer can specifically be nylon material, PP, PET, or PE, etc.
[0045] In one embodiment, the air filter further includes a frame 3, and the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are disposed inside the frame 3, and the frame 3 wraps the edges of the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2.
[0046] In one embodiment, a seal is disposed on the side surface of the frame 3. The seal includes a sealing strip, a sealing ring, or other sealing structures. The seal can prevent a gap from being formed between the air filter and the air purifier 4 during the installation of the air filter, improve the sealing performance, and can also improve the purification ability. The material of the seal can be rubber material, or the same material as the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2, or other materials.
[0047] This embodiment also provides an air purifier 4, as Figures 5 to 7As shown, it includes a frame 3 and an air filter as described above. The air filter is disposed within the frame 3 and can be in a planar shape, rolled into a circular ring shape, or formed into a square frame shape. When the air filter is in a planar shape, the frame 3 is a rectangular frame, and the air filter is also rectangular and is disposed within the rectangular frame; when the air filter is rolled into a circular ring shape, the frame 3 includes upper and lower end caps, and the two ends of the air filter along its axial direction are respectively fixed by the upper and lower end caps; when the air filter is formed into a square frame shape, the frame 3 includes upper and lower end caps, and the two ends of the air filter along its axial direction are respectively fixed by the upper and lower end caps. To prevent a gap between the air filter and the air purifier 4 during installation, a seal can be provided on the outer peripheral sidewall of the rectangular frame or on the outer end faces of the upper and lower end caps. The seal can be a sealing strip or a sealing ring, and the material of the seal can be the same as that of the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2, or can be other materials. The air purification ability of the air filter can be improved by the provision of the seal.
[0048] For the planar air filter in which both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a planar shape or the square frame filter in which both are in a square frame shape, as Figure 2 shown, the pleat spacings d1 and d2 on both sides are substantially the same, and the range of the pleat spacings d1 and d2 is within 2.5 mm - 5.5 mm. The air filter has a better air filtration effect and lower noise. Through a large number of experiments, when the range of the pleat spacings d1 and d2 is within 3.0 mm - 4.0 mm, the air filter has the best air filtration effect and the lowest noise.
[0049] For the planar air filter in which both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a circular ring shape, the inner pleat spacing near the center of the circle is generally smaller than the outer pleat spacing far from the center of the circle. For the planar air filter in which both the hydrophobic particulate filter section 1 and the hydrophobic odor adsorption section 2 are in a planar shape, the inner pleat spacing is preferably 1.4 mm - 3.45 mm, and optimally 2.1 mm - 2.8 mm, and the outer pleat spacing is preferably 3.5 mm - 8.25 mm, and optimally 4.5 mm - 6 mm.
[0050] The above embodiments merely illustrate the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.
Claims
1. An air filter, characterized in that: It comprises a hydrophobic particle filter part and a hydrophobic odor adsorption part which are stacked, wherein the hydrophobic odor adsorption part comprises a hydrophobic base layer and a hydrophobic odor adsorption layer adhered to the hydrophobic base layer, and the number of the hydrophobic odor adsorption layers is two and they are respectively adhered to both sides of the hydrophobic base layer.
2. The air filter according to claim 1, characterized in that: The hydrophobic particle filter portion comprises a polyester or polyethylene non-woven fabric protective layer and a polymer nanofiber layer.
3. The air filter according to claim 1, characterized in that: The hydrophobic particle filtering portion is folded into a pleat shape.
4. The air filter according to claim 3, characterized in that: The hydrophobic particle filter portion and the hydrophobic odor adsorption portion are both in a plane shape or in a circular ring shape or in a square frame shape. When the hydrophobic particle filter portion and the hydrophobic odor adsorption portion are both in a plane shape or in a square frame shape, the pleat spacing of the hydrophobic particle filter portion is 2.5mm~5.5mm; when the hydrophobic particle filter portion and the hydrophobic odor adsorption portion are both in a circular ring shape, the inner pleat spacing of the hydrophobic particle filter portion is 1.4mm~3.45mm, and the outer pleat spacing is 3.5mm~8.25mm.
5. The air filter according to claim 4, characterized in that: When the hydrophobic particle filter portion and the hydrophobic odor adsorption portion are both planar shapes or both square shapes, the pleat spacing of the hydrophobic particle filter portion is 3.0mm~4.0mm; when the hydrophobic particle filter portion and the hydrophobic odor adsorption portion are both circular ring shapes, the inner pleat spacing of the hydrophobic particle filter portion is 2.1mm~2.8mm, and the outer pleat spacing is 4.5mm~6mm.
6. The air filter according to claim 1, characterized in that: The number of the hydrophobic odor adsorption parts is multiple layers, and the hydrophobic odor adsorption parts of each layer are stacked along the direction of air flow, and the hydrophobic particle filter part is arranged between any two layers of the hydrophobic odor adsorption parts.
7. The air filter according to claim 1, characterized in that: The hydrophobic particle filtering portion is arranged on the inner side or the outer side of the hydrophobic odor adsorption portion along the air flow direction.
8. The air filter according to claim 1, characterized in that: The hydrophobic odor adsorption layer includes any one of activated carbon, molecular sieve, zeolite and diatom mud.
9. The air filter according to claim 1, characterized in that: It also includes a dustproof layer, which is arranged on the surface of the air inlet side of the air filter.
10. The air filter according to claim 1, characterized in that: It also includes a frame, the hydrophobic particle filter and the hydrophobic odor adsorption part are arranged in the frame, and the frame wraps the edges of the hydrophobic particle filter and the hydrophobic odor adsorption part.
11. The air filter according to claim 10, characterized in that: The side of the frame is provided with a sealing member.
12. An air purifier, characterized in that: Comprising the air filter as claimed in any one of claims 1 to 11.