CN219186279U - Air filter - Google Patents

Abstract

The utility model discloses an air filter, comprising: the support frame is inlaid in the support frame, supported by the support frame and detachably connected with the filter element; the filter element comprises a frame and a pleated filter medium which is fixed in the frame and fixedly connected with the frame, wherein the pleated filter medium comprises a plurality of pleats. The air filter can filter pollutants, dust, particles, bacteria and viruses in the air, and the like.

Description

Air filter

Technical Field

The utility model relates to the field of filters, in particular to an air filter.

Background

Along with the continuous improvement of the living standard of people, people are more and more convenient to eat and hold. The indoor air conditioner usually used by people is provided with a built-in standard nylon or plastic net-shaped filter screen, which can only block large-particle dust and dirt, but can not block air micro-particles and sensitizers which are harmful to the body, such as particles with the particle size of 2.5 microns (PM 2.5) or less, dust mites, bacteria, viruses and the like, and has extremely unsatisfactory filter effect.

Disclosure of Invention

According to one aspect of the present utility model, there is provided an air filter comprising: the support frame is inlaid in the support frame, supported by the support frame and detachably connected with the filter element; the filter element comprises a frame and a pleated filter medium which is fixed in the frame and fixedly connected with the frame, wherein the pleated filter medium comprises a plurality of pleats.

In one embodiment of the utility model, the height of each pleat is at least 6mm.

In one embodiment of the utility model, the pleated filter media contains 3-7 pleats per 25mm length.

In one embodiment of the utility model, the distance between two adjacent pleats in the pleated filter media is at most 10mm.

In one embodiment of the utility model, the plurality of pleats is fixed in pleat spacing by a fastener.

In one embodiment of the utility model, the pleated filter media is a multi-layer composite media.

In one embodiment of the present utility model, the multi-layered composite media includes a nanofiber layer as the main filtration layer and at least one other material layer as the additional filtration layer.

In one embodiment of the utility model, the multi-layer composite media further comprises an adsorbent layer.

In one embodiment of the utility model, the multi-layer main filtration layer has a thickness of less than 2 mm.

The air filter can filter pollutants, dust, particles, bacteria and viruses in the air, and the like.

Drawings

In order to make the technical problems solved by the present utility model, the technical means adopted and the technical effects achieved more clear, specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be noted, however, that the drawings described below are merely illustrative of exemplary embodiments of the present utility model and that other embodiments of the drawings may be derived from these drawings by those skilled in the art without undue effort. In the figures, one or more representative elements may be designated by reference numerals only, but it should be understood that such reference numerals apply to all such identical elements. Unless otherwise indicated, all illustrations and drawings in this application are not to scale and are selected for the purpose of illustrating different embodiments of the utility model. In particular, unless otherwise indicated, the dimensions of the various components are described using only exemplary terms and no relationship between the dimensions of the various components should be inferred from the figures.

FIG. 1 is a schematic view of the overall structure of a filter according to an embodiment of the present utility model.

Fig. 2A-B are exploded views of a filter structure according to one embodiment of the utility model.

FIG. 3 is a schematic illustration of a filter media in a filter according to one embodiment of the utility model.

FIG. 4 is a schematic side cross-sectional view of a filter media in a filter according to one embodiment of the utility model.

Detailed Description

Exemplary embodiments of the present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown, although the exemplary embodiments may be practiced in various specific ways. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the utility model to those skilled in the art. The structures, capabilities, effects, or other features described in a particular embodiment may be incorporated in one or more other embodiments in any suitable manner without departing from the spirit of the present utility model.

In describing particular embodiments, specific details of construction, performance, effects, or other features are set forth in order to provide a thorough understanding of the embodiments by those skilled in the art. It is not excluded, however, that one skilled in the art may implement the present utility model in a particular situation in a solution that does not include the structures, properties, effects, or other characteristics described above.

The drawings are for illustrative purposes only and are not to be construed as limiting the present application; for better illustration of the present embodiment, some of the components of the drawings may be omitted, enlarged or reduced, and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically, directly, indirectly via an intermediary, or in communication with the interior of the two elements. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present utility model.

The air filter of the embodiment of the utility model is characterized by comprising the pleated filter media, namely, the filter media are fixed in the paper frame in a pleated mode to form the filter element, the filter element is embedded in the hard plastic frame, the hard plastic frame is used for supporting and fixing the filter element, the hard plastic frame can be used for a long time, replacement is not needed, the installation is easy, the pleated filter media and the paper frame are integrated (collectively called as a filter element), and the filter element is detachably connected with the supporting frame. The air filter provided by the embodiment of the utility model can replace an original nylon or plastic net-shaped filter screen which is internally provided with a standard, and the filter element can be replaced conveniently after being used for a period of time to adsorb air pollutants.

The pleated filter is once installed in an air conditioner, after the air conditioner is started, dirty air passes through the pleated filter and then enters an air conditioner refrigerating assembly, the filter core can filter particulate matters, dust mites, bacteria, viruses and the like of the air, meanwhile, the bacteria and the viruses can be killed, clean filtration is carried out in a filtering mode, and clean air with certain impurities removed is obtained.

Specifically, as shown in fig. 1, 2A and 2B, the filter according to the embodiment of the present utility model may include a hard plastic support frame 1a, a filter cartridge 1B embedded in the support frame 1a to be supported thereby, and detachably connected to the support frame 1 a. The filter element 1b can comprise a paper frame 2, a pleated filter medium 3 fixed in the frame 2 and fixedly connected with the frame 2, and the peripheral edge of the filter medium 3 is fixedly connected with the paper frame 2 through a hardening adhesive 4. Further, as shown in fig. 2B, a tampon 2a may be attached around the outer periphery of the rim 2 to prevent air from bypassing the gap between the outer side of the rim 2 and the support frame 1 a.

In some embodiments, the pleated filter media 3 comprises a plurality of pleats, the pleat spacing may be fixed by fasteners. The fixing means may be a hot melt adhesive 5 by which the pleat spacing is fixed. Of course, it is also possible to fix the pleat pitch without using the adhesive 5. At this point, the pleat spacing of all pleats may be maintained by the tension of the material of the filter media itself.

The pleated filter medium 3 can be formed by compounding a plurality of layers of media, and clean filtration is performed in a multi-layer combined filtration mode, so that clean air with certain impurities removed is obtained. In some embodiments, such multilayer composite media may include any media having nanofiber layers, laminated to one or more other material layers, such as nonwoven fabrics, synthetic or natural fibers (such as meltblown or spunbond webs, or laminates or composites of two or more materials, for example, nonwoven organic polymer webs including polyethylene, polypropylene, or polylactic acid (biodegradable)), optionally compounded into a filtration layer. Any such material layer (referred to as an additional filtration layer) may be laminated to the main filtration layer (nanofiber layer) by any suitable method, such as by melt bonding, by adhesive (hot melt adhesive, pressure sensitive adhesive, etc.), calendaring or ultrasonic point bonding, etc. Such a multilayer composite medium can better filter air pollutants. In some embodiments, the multi-layered composite media may also include at least one activated carbon or adsorbent, catalyst layer (collectively referred to herein as an adsorption layer) for adsorption to reduce the amount of offensive odors, formaldehyde, total volatile organic compound gases, and the like.

In various embodiments, the main filtration layer (nanofiber layer) of the multi-layer composite media may have a thickness of less than about 2.0 mm. The thickness thereof may be, for example, 1.0mm, 0.5mm, or the like. Other layers of the multi-layer composite media, such as additional filtration layers or thickness of the adsorbent layer, may also be provided with reference to these values.

In some embodiments, the multi-layer composite media of the pleated filter may be pleated by a pleating tool or machine score.

In some embodiments, the filter media, i.e., the filter media, of the removable cartridge in the filter is configured in a pleated form, for example, 3-7 folds per 25mm spacing, the height of which will be slightly adjusted to the particular make and model of air conditioner. Details of pleat geometry such as pleat spacing and pleat height of pleated filter media can be seen in fig. 4. Wherein the pleat height (pleat amplitude P _H ) May be at least about 6mm.

The pleat spacing of pleated filter media (P in fig. 4 _S ) Is the distance between nearest-neighbor ipsilateral pleat tips along a direction aligned with the general major plane of the filter media (i.e., along the longitudinal direction of the pleated filter media). In various embodiments, the pleat spacing may be a distance of up to about 10mm, which may be, for example, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, etc., the pleated filter media may also include any suitable pleat distance (although the pleat distance may be very close or somewhat greater than the pleat height for any given pleated filter media).

Such pleat spacing and pleat height have been found to be advantageous for the air flow resistance of the filter media. That is, in various embodiments, having a relatively higher air percent permeability may advantageously exhibit lower flow resistance (i.e., lower initial pressure drop) during use of the pleated filter media filter than the air flow resistance exhibited by using a non-pleated filter media filter.

In some embodiments, the location where the edges of the paper frame 2 contact the pleated filter media 3 is filled with the stiffening adhesive 4 can substantially close the pleated edges to prevent air flow through. In this case, the paper border 2 edges may act as edge seals that substantially prevent air (or any other flowing gas or gas mixture) from flowing laterally outward beyond the corrugated edges of the pleated filter media and thus at least partially bypassing the filter media.

The filter of the embodiment of the utility model can be used as a filter screen of an air conditioner, for example, can filter pollutants, dust and particles in air, kill bacteria and viruses and the like. The filter may be sized for use with various specific brands and models of air conditioners, such as window type air conditioners, split type air conditioners, ceiling type split type air conditioners, and the like. It can also be used in other situations where it is desired to filter air.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (9)

1. An air filter, comprising: the support frame is inlaid in the support frame, supported by the support frame and detachably connected with the filter element; the filter element comprises a frame and a pleated filter medium which is fixed in the frame and fixedly connected with the frame, wherein the pleated filter medium comprises a plurality of pleats.

2. A filter according to claim 1, wherein the height of each pleat is at least 6mm.

3. The filter of claim 1, wherein the pleated filter media comprises 3-7 pleats per 25mm of length.

4. The filter of claim 1, wherein the spacing between two adjacent pleats in the pleated filter media is at most 10mm.

5. The filter of claim 1, wherein the plurality of pleats are secured to the pleat spacing by a fastener.

6. The filter of claim 1, wherein the pleated filter media is a multi-layer composite media.

7. The filter of claim 6, wherein the multi-layer composite media includes a nanofiber layer as a main filtration layer.

8. The filter of claim 7, wherein the multi-layer composite media further comprises an adsorbent layer.

9. The filter of claim 7, wherein the main filtration layer has a thickness of less than 2 mm.

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