An adjustable filter housing

Abstract

The utility model provides a kind of adjustable filter outer frame, including outer frame, outer frame includes a pair of left and right sides oppositely arranged frame body, connecting piece is arranged between two side frame bodies relative upper and lower sides, connecting piece is detachably connected with frame body and encloses outer frame;Each frame body includes the bottom plate extending along length direction, the two sides of bottom plate length direction are bent to form fixed plate respectively, fixed plate is equipped with first connecting hole, air hole and scale, connecting piece is used to connect the upper and lower sides of air filter medium relative;Through scale and the design of cuttable frame body, the size of air filter can be adjusted according to installation environment, improve versatility, avoid the installation difficulty or resource waste caused by size inconsistency, can be applicable to a variety of installation environments, reduce the idle and inventory of multi-size customization, and improve the efficiency of air filtration and outer frame practicality.

Description

Technical Field

[0001] This utility model relates to the field of air purification, specifically to an adjustable filter frame. Background Technology

[0002] Air filters, as core components of modern building ventilation, industrial equipment protection, and indoor air purification systems, remove particulate matter, microorganisms, and harmful gases from the air through physical interception or chemical adsorption. They play a vital role in protecting human health, maintaining stable equipment operation, and meeting clean space requirements. With accelerating urbanization, traditional fixed-size air filters are no longer adequate for complex and ever-changing installation scenarios.

[0003] A utility model patent with US20170241192A1 discloses an "Adjustable air filter." This patent uses two U-shaped frame structures connected at their open ends to form an adjustable frame structure, thereby adjusting the length of the outer frame. However, this method of adjusting the outer frame length has limitations: the actual adjustment range is limited, it cannot adapt to various installation environments, and it lacks an intuitive dimensional calibration system, resulting in low user tolerance for installation errors and requiring repeated adjustments to fit the installation environment.

[0004] Therefore, it is necessary to propose a new type of filter frame to solve the problems mentioned above. Utility Model Content

[0005] This invention provides an adjustable filter frame to solve the problems mentioned in the background section.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an adjustable filter frame, comprising an outer frame, the outer frame including a pair of frame bodies arranged opposite each other on the left and right sides, and connecting members on opposite upper and lower sides provided between the two frame bodies, the connecting members being detachably connected to the frame bodies and forming the outer frame; each frame body includes a base plate extending along the length direction, the two sides of the base plate being bent to form a fixing plate, the fixing plate having a first connecting hole, a ventilation hole and a scale, the first connecting hole, the ventilation hole and the scale being respectively arranged along the length direction of the fixing plate; the connecting members are used to connect the opposite upper and lower sides of the air filter medium, and the two ends of the connecting members are respectively provided with a second connecting hole that mates with the first connecting hole, the first connecting hole and the second connecting hole being fixedly connected by detachable fasteners; wherein, the frame body can be cut along the scale marked on the scale, thereby adjusting the size of the filter frame.

[0007] Preferably, the ventilation hole is located between the scale and the first connecting hole.

[0008] Preferably, there are multiple ventilation holes and multiple first connecting holes, and the arrangement of the first connecting holes and ventilation holes is staggered.

[0009] Preferably, at least a portion of the first connecting holes are disposed between two adjacent ventilation holes, and each first connecting hole is equidistant from the adjacent ventilation hole.

[0010] Preferably, the ventilation holes are used to increase the ventilation area of ​​the air filter media in the assembled state of the filter.

[0011] Preferably, the ventilation hole is rectangular, and one set of parallel opposite sides are aligned with the scale markings.

[0012] Preferably, when the frame and the connector are fixedly connected, the connector is at least partially located between the fixing plates on both sides of the frame.

[0013] Preferably, the width of the fixing plate is 80-120 mm.

[0014] Preferably, the fixing plate is also provided with fold lines, and the fixing plate can be folded along the fold lines.

[0015] Preferably, the connector is made of cardboard or plastic sheet, and the frame is made of cardboard or plastic sheet.

[0016] By applying the technical solution of this utility model, the size of the air filter can be adjusted according to the installation environment through the design of a scale and a cuttable frame, improving versatility and avoiding installation difficulties or resource waste caused by size mismatch. It can be applied to various installation environments, reducing idle and inventory issues caused by multi-size customization, and improving the efficiency of air filtration and the practicality of the outer frame. The staggered arrangement of the first connecting holes and ventilation holes ensures the stable installation of the connectors even after cutting, avoiding affecting the structural strength and function of the filter. The use of detachable fasteners for fixing the connection makes the replacement of the air filter media more convenient, and assembly can be completed without additional tools, improving ease of use. The frame structure is foldable, and can be folded and stored when not in use, reducing storage volume and lowering transportation and storage costs. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the frame and connectors of this utility model;

[0020] Figure 3This is a schematic diagram of the unfolded frame structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the air filter medium of this utility model.

[0022] Reference numerals: frame (100); base plate (110); fixing plate (120); first connecting hole (121); ventilation hole (122); scale (123); fold line (124); air filter medium (200); connector (210); second connecting hole (211); metal mesh layer (220); fastener (300). 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, not all embodiments. The following description of at least one exemplary embodiment is illustrative in nature and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary rather than limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] like Figures 1 to 4As shown, an adjustable filter frame includes an outer frame comprising a pair of frame bodies 100 arranged opposite each other on the left and right sides. Connectors 210 are provided between the two frame bodies 100 on opposite upper and lower sides. The connectors 210 are detachably connected to the frame bodies 100 and form the outer frame. Each frame body 100 includes a base plate 110 extending along its length. The two sides of the base plate 110 are bent to form fixing plates 120. The fixing plates 120 are provided with a first connecting hole 121, a ventilation hole 122, and a scale 123, which are respectively arranged along the length of the fixing plate 120. The connectors 210 are used to connect an air filter. On the upper and lower sides of the medium 200, the connector 210 has a second connecting hole 211 at each end that mates with the first connecting hole 121. The first connecting hole 121 and the second connecting hole 211 are fixedly connected by a detachable fastener 300. The frame 100 can be cut along the scale marked on the ruler 123 to adjust the size of the filter frame. The frame 100 can be cut to a length that fits the installation environment to adjust the size of the air filter. By cutting the base plate 110 and the fixing plate 120 accordingly, the size of the entire air filter can be flexibly adjusted to ensure that it matches the installation environment and improves the overall filtration efficiency and installation convenience.

[0027] Please see Figures 1 to 3 As shown, in this embodiment, a scale 123 is provided on the fixing plate 120 along the length direction of the fixing plate 120. The scale 123 can be set on the fixing plate 120 by means of printing, labeling and laser engraving. The scale 123 can be set on one side of the fixing plate 120 or both sides of the fixing plate 120 can be set with scale 123, so as to facilitate users to cut accurately and quickly cut the two side frames 100 according to the required length by using the scale 123 to adapt to different installation environments or air filter media 200.

[0028] In other embodiments (not shown in the figure), the scale 123 can be omitted, the size of the ventilation hole 122 can be set to an integer, and the spacing between the ventilation holes 122 can also be an integer. The edge of the ventilation hole 122 can be used as the cutting reference for cutting. Alternatively, some numbers or scales can be marked as needed.

[0029] Please see Figure 1 and Figure 3As shown, in this embodiment, the ventilation hole 122 is disposed between the scale 123 and the first connecting hole 121. The relative position of the ventilation hole 122 is indicated by the scale 123 and forms a fixed reference with the first connecting hole 121, which facilitates accurate positioning by the user during cutting or installation and helps control the size adjustment and assembly accuracy. There is no specific limitation on the spacing between the ventilation holes 122, which can be set according to actual needs. Preferably, the ventilation holes 122 are equidistant. The setting of the ventilation holes 122 can ensure the structural strength of the frame 100 while achieving a scientific and reasonable balance. The layout achieves weight reduction and effectively reduces system wind resistance; it increases the ventilation effect of the air filter medium 200, allowing air to circulate smoothly, thereby ensuring effective contact between the air filter medium 200 and the outside air, improving the overall ventilation and filtration effect, and preventing the air filter medium 200 from accidentally falling off; the ventilation hole 122 is rectangular, and the two opposite sides are aligned with one of the scale indicators of the scale 123. The side aligned with the scale indicator line makes it easier to cut the frame 100. When cutting the corresponding size, you only need to cut along the edge of the rectangle, making the cut edge flatter and more beautiful.

[0030] In other embodiments (not shown in the figures), the shape of the ventilation hole 122 can also be a geometric shape such as a circle, triangle, or polygon, and the shapes can be used alternately, all of which can achieve the ventilation effect of increasing the air filter medium 200.

[0031] Please see Figure 3 As shown, in this embodiment, multiple ventilation holes 122 and multiple first connecting holes 121 are provided. The number of ventilation holes 122 and first connecting holes 121 is not specifically limited and can be set according to actual needs. The arrangement of the first connecting holes 121 and ventilation holes 122 is staggered. Specifically, the staggered arrangement means that at least some of the first connecting holes 121 are located between two adjacent ventilation holes 122, that is, an arrangement of one first connecting hole 121 and one ventilation hole 122, and each first connecting hole 121 is equidistant from adjacent ventilation holes 122. The staggered arrangement of the first connecting hole 121 and the ventilation hole 122 ensures that the first connecting hole 121 still cooperates with the second connecting hole 211 of the connector 210 after cutting. The staggered arrangement also avoids the structural weakness of the frame 100 due to too many holes in some areas, and improves the strength and durability of the frame. This innovative ventilation structure design enables the entire filtration system to achieve synergistic optimization in terms of air permeability, lightweight and safety, and provides a reliable guarantee for high-efficiency air filtration.

[0032] In other embodiments (not shown in the figure), the ventilation holes 122 and the first connecting holes 121 can also be arranged in parallel, that is, each ventilation hole 122 corresponds to a first connecting hole 121 in parallel; the spacing between the ventilation holes 122 can also be set in a way that is long and short, so as to better adapt to different installation environments.

[0033] Please see Figure 1 and Figure 2 As shown, in this embodiment, since the frame 100 is fixedly connected by the connector 210, and the connector 210 is at least partially located between the fixing plates 120 on both sides of the frame 100, the air filter medium 200 is at least partially embedded inside the frame 100, which improves the overall stability, prevents the air filter medium 200 from shifting or deforming due to airflow impact, and ensures that the air filter medium 200 and the frame 100 maintain close contact, reducing air leakage and improving filtration efficiency. The width of the fixing plate 120 is in the range of 80-120mm, preferably 100mm, to ensure that the frame 100 has sufficient strength and can maintain effective installation space for the air filter medium 200, while optimizing airflow. The moderate width of the fixing plate 120 ensures the stability of the frame 100 without affecting airflow, and is easy to process and install. A wider width range can also be selected according to the situation. A wider range can increase the stability of the outer frame and more design elements. The specific width is not limited.

[0034] Please see Figure 1 and Figure 2 As shown, in this embodiment, during installation, one end of the connectors 210 on the upper and lower sides of the air filter medium 200 is aligned with the left frame 100, the corresponding first connecting hole 121 and second connecting hole 211 are aligned, and fasteners 300 are used for fixing. Then, the other end of the two connectors 210 is aligned with the right frame 100, the corresponding first connecting hole 121 and second connecting hole 211 are aligned, and fasteners 300 are used again for fixing, making the entire frame 100 relatively stable. The fasteners 300 are fixing screws. The length of the frame 100 is adjusted to fit the desired shape. Different air filter media 200 and different sizes of installation environments are available to adapt to different specifications of air conditioning systems, air purification devices or ventilation equipment, which improves the versatility and applicability of the air filter. There is no need to customize the frame 100, which effectively reduces production and inventory costs. At the same time, the frame 100 has a compact structure and can be laid flat and folded for storage when not in use, reducing storage volume and lowering transportation and storage costs. The detachable structure fixed by fasteners 300 makes the installation and replacement of the air filter media 200 more convenient, and assembly can be completed without the need for additional tools.

[0035] In other embodiments (not shown in the figures), the frame 100 and the connector 210 may also omit the first connecting hole 121 and the second connecting hole 211, reducing punching or mold processing steps and simplifying the production process; the fastener 300 and the first connecting hole 121 may be eliminated by using methods such as bonding, binding and snap-fit, reducing additional material costs; bonding may be done by using double-sided tape, hot melt adhesive and self-adhesive, binding may be done by using staples or similar binding tools, or quick installation and disassembly may be achieved by snap-fit, adapting to different application needs.

[0036] Please see Figure 3 As shown, in this embodiment, the fixing plate 120 is also provided with a folding line 124. The fixing plate 120 can be folded along the folding line 124. The folded fixing plate 120 is more compact, further reducing storage space and making it easier to transport and store. There is no specific limit to the number of folding lines 124. It can be adjusted according to actual needs. One or multiple folding lines can be set. In this embodiment, there is one folding line. By setting different numbers of folding lines 124, different design requirements and storage conditions can be adapted.

[0037] Please see Figure 1 and Figure 3 As shown, in this embodiment, the frame 100 is made of cardboard or plastic sheet. The cutting, folding, and stamping processes of cardboard and plastic sheet are simpler than those for metal. The production process does not require complex molds or high-temperature processing, reducing energy consumption and manufacturing costs. The cardboard frame 100 can be enhanced in durability through multi-layer composite structures, corrugated structures, or moisture-proof treatment, preventing strength reduction due to humid environments. Furthermore, after the filter media reaches the end of its service life, a new media can be directly replaced without replacing the entire frame 100, reducing resource waste and improving economic efficiency. The connector 210 is also made of cardboard or plastic sheet.

[0038] Please see Figure 4 As shown, in this embodiment, the air filter medium 200 includes a first layer and a second layer bonded together. The first layer is an adsorption layer with electrostatic adsorption function, and the second layer is a non-woven fabric layer with probiotic microcapsules. The first layer adsorbs allergens in the air through electrostatic adsorption, and the probiotic non-woven fabric of the second layer decomposes the allergens adsorbed by the first layer, thereby realizing the self-cleaning function of the filter element. This allows the air filter element to treat the allergens in it. An air filter element with a certain self-cleaning ability can still maintain a certain filtration capacity after long-term use or storage, thereby extending the service life of the filter element.

[0039] During preparation, electrostatic fibers or electrostatic filter paper are cut to the required size and shape to prepare the first layer, ensuring uniform electrostatic distribution on the material surface to improve adsorption efficiency. Non-woven fabric is cut to the same size and shape as the first layer, and probiotic microcapsules are embedded within the non-woven fabric to prepare the second layer. Microcapsule technology protects the activity of probiotics and allows them to be released when needed. The first and second layers are then stacked together, ensuring a tight fit. Appropriate adhesives or thermoforming techniques are used to bond the two layers together, forming a single, integrated filter medium. This design not only allows the first layer to effectively adsorb allergens, but also enables the probiotics released from the second layer to decompose the allergens adsorbed in the first layer, thus giving the air filter a certain self-cleaning ability and maintaining high filtration performance even after long-term use or storage.

[0040] Microencapsulated probiotics utilize microencapsulation technology to encapsulate probiotics within tiny capsules, protecting them from external environmental influences and thus improving their survival rate and stability. They are completely safe to use. The microcapsules containing probiotics rupture due to friction, allowing the probiotics to be gradually released over time. The probiotic components include beneficial bacteria such as lactobacillus, yeast, and bifidobacteria. Microencapsulation technology provides a miniature container for the probiotics, protecting their contents from evaporation, oxidation, and contamination until they are triggered for release, thus maintaining their activity during processing, storage, and use.

[0041] Please see Figure 4 As shown, in this embodiment, the air filter medium 200 is provided with a shaping layer, which is disposed on the first layer. The shaping layer is made of a metal mesh layer 220 with a thickness of 0.1mm to 1mm. Its main function is to provide structural support and shaping function for the air filter medium 200. The metal mesh structure has good toughness and plasticity, which increases its hardness and shape while ensuring the flexible stretching of the air filter medium 200, preventing it from deforming during use or installation, thereby maintaining the predetermined filtration effect.

[0042] In other embodiments (not shown in the figures), the shaping layer can be disposed on the second layer or on both sides, or the shaping layer can be omitted to reduce processing and production costs. The number and position of the shaping layer can be set according to actual needs, or a flat material can be placed to achieve the best balance between performance, cost and production efficiency.

[0043] In summary, as can be seen from the above description, this utility model achieves the following technical effects: The design of the scale 123 and the cuttable frame 100 allows the size of the air filter to be adjusted according to the installation environment, improving versatility and avoiding installation difficulties or resource waste caused by size mismatch. It is applicable to various installation environments, reducing idle space and inventory from multi-size customization, and improving air filtration efficiency and the practicality of the outer frame. The staggered arrangement of the first connecting holes 121 and ventilation holes 122 ensures the stable installation of the connector 210 even after cutting, avoiding affecting the structural strength and function of the filter. The use of detachable fasteners 300 for fixed connection makes the replacement of the air filter medium 200 more convenient, allowing assembly without additional tools and improving ease of use. The frame 100 structure is foldable, allowing for storage when not in use, reducing storage volume and lowering transportation and storage costs.

[0044] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0047] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable filter frame, comprising an outer frame, characterized in that: The outer frame includes a pair of frame bodies (100) arranged opposite each other on the left and right sides, and connecting members (210) on opposite upper and lower sides are provided between the two frame bodies (100). The connecting members (210) are detachably connected to the frame bodies (100) and form the outer frame; and Each frame (100) includes a base plate (110) extending along its length. The base plate (110) has two sides bent along its length to form a fixing plate (120). The fixing plate (120) has a first connecting hole (121), a ventilation hole (122), and a scale (123). The first connecting hole (121), the ventilation hole (122), and the scale (123) are respectively arranged along the length of the fixing plate (120). The connector (210) is used to connect the upper and lower sides of the air filter medium (200). Each end of the connector (210) has a second connecting hole (211) that mates with the first connecting hole (121). The first connecting hole (121) and the second connecting hole (211) are fixedly connected by a detachable fastener (300). The frame (100) can be cut along the scale marked on the ruler (123) to adjust the size of the filter frame.

2. The adjustable filter frame according to claim 1, characterized in that: A ventilation hole (122) is located between a scale (123) and a first connecting hole (121).

3. The adjustable filter frame according to claim 1, characterized in that: Multiple ventilation holes (122) and multiple first connecting holes (121) are provided, and the arrangement of the first connecting holes (121) and ventilation holes (122) is staggered.

4. The adjustable filter frame according to claim 3, characterized in that: At least a portion of the first connecting holes (121) are disposed between two adjacent ventilation holes (122), and each first connecting hole (121) is equidistant from the adjacent ventilation hole (122).

5. The adjustable filter frame according to claim 1, characterized in that: The ventilation hole (122) is rectangular, and one set of parallel opposite sides are aligned with the scale indicator line of the ruler (123).

6. The adjustable filter frame according to claim 1, characterized in that: When the frame (100) is fixedly connected to the connector (210), the connector (210) is at least partially located between the fixing plates (120) on both sides of the frame (100).

7. The adjustable filter frame according to claim 1, characterized in that: The width of the fixing plate (120) is 80-120 mm.

8. The adjustable filter frame according to claim 1, characterized in that: The fixing plate (120) is also provided with a fold line (124), and the fixing plate (120) can be folded along the fold line (124).

9. The adjustable filter frame according to claim 1, characterized in that: The connector (210) is made of cardboard or plastic sheet, and the frame (100) is made of cardboard or plastic sheet.

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