Air filter with color indication

Abstract

The utility model belongs to the technical field of air filtering devices, and particularly relates to an air filter with color indication, which comprises a frame and a filter element, the frame comprises a first frame body and a second frame body which are connected with each other; a cavity is formed between the first frame body and the second frame body, and the filter element is mounted in the cavity; the filter element comprises a supporting layer and a color indicator; the supporting layer is used for fixing the color indicator, so that the color indicator is stably connected with the frame; the color indicator can adsorb pollutants and is used for generating color change after adsorbing the pollutants; the color indicator is potassium permanganate, the potassium permanganate has the effect of adsorbing pollutants and can change color after adsorption, so that the use degree of the filter element can be known from the outside, the replacement time of the filter element can be conveniently grasped, the use is convenient, and the situation that consumables are wasted due to the fact that the filter element is replaced too early or the air purification effect is reduced due to the fact that the filter element is replaced too late is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of air filtering devices, and in particular relates to an air filter with color indication. Background Art

[0002] In air purifiers, air conditioners and other equipment, air filters are often used to filter air to reduce microparticles and harmful gases in the air and improve the cleanliness of the air. Existing air filters generally include a frame and a filter element. The filter element is installed in the frame, and the air can be filtered by the filter element when passing through the filter element.

[0003] For example, Chinese utility model patent CN215692512U discloses an air filter, including a frame and a filter element. The frame includes a frame body and a first fixing plate. The frame body, the first fixing plate and the filter element pressing plate form an open cavity, and the filter element is installed in the cavity.

[0004] The above utility model patents and the air filter cartridges currently on the market all have a limited period of use; as the use time goes by, the filter cartridge's filtering capacity decreases and needs to be replaced. However, in different usage scenarios and different air filtration devices, the air flow rate and air pollution level are different, making it difficult to unify the replacement frequency of the filter cartridge, so that users cannot accurately know the usage level of the filter cartridge, and it is difficult to accurately grasp when the filter cartridge needs to be replaced; if the replacement time is too late, the air is difficult to filter effectively, and if the replacement time is too early, the consumables increase and waste is formed, which is not convenient to use. Utility Model Content

[0005] The utility model aims to provide an air filter with color indication, aiming to solve the technical problem in the prior art that "it is difficult to accurately know the usage degree of the filter element, and then it is difficult to accurately grasp the replacement time of the filter element, and it is inconvenient to use".

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides an air filter with color indication, which is used to filter pollutants in the air, including a frame and a filter element; the frame includes a first frame and a second frame connected to each other; a cavity is formed between the first frame and the second frame, and the filter element is installed in the cavity; the filter element includes a supporting layer and a color indicator; the supporting layer is used to fix the color indicator; the color indicator can adsorb pollutants, and the color indicator is used to change color after adsorbing the pollutants; the color indicator is potassium permanganate.

[0007] Optionally, the color indicator forms a cover attached to the support layer.

[0008] Optionally, the support layer is configured as a mesh structure; the support layer is provided with a plurality of pores for allowing air to pass through.

[0009] Optionally, the color indicator is potassium permanganate particles.

[0010] Optionally, the support layer includes two plywoods; a gap is formed between the two plywoods, and the color indicator is placed in the gap; and the particle size of the color indicator is less than or equal to the spacing of the gap.

[0011] Optionally, a filter layer is disposed on the outer side of the support layer, and the filter layer is used to filter polluted gas.

[0012] Optionally, the filter layer is composed of at least one of meltblown cloth or electrostatic cotton cloth.

[0013] Optionally, the first frame and the second frame are both provided with a plurality of ventilation windows, and the ventilation windows are used to allow air to pass through; the positions of the plurality of ventilation windows on the first frame correspond to the positions of the plurality of ventilation windows on the second frame.

[0014] Optionally, the shape of some ventilation windows is triangular.

[0015] Optionally, a plurality of first connecting supports are disposed on the first frame, and a plurality of second connecting supports are disposed on the second frame, and the first connecting supports and the second connecting supports cooperate with each other to clamp the filter element.

[0016] Compared with the prior art, the one or more technical solutions in the air filter with color indication provided by the embodiment of the utility model have at least one of the following technical effects:

[0017] The filter element includes a supporting layer and a color indicator. The supporting layer is used to fix the position of the color indicator so that the color indicator is stably connected to the frame. The color indicator is set to potassium permanganate. Potassium permanganate has the function of adsorbing pollutants and changes color after adsorption. Therefore, the degree of use of the filter element can be known externally, so as to grasp the replacement time of the filter element. It is easy to use to avoid replacing the filter element too early and wasting consumables, or replacing the filter element too late and reducing the air purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a front view of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of the first frame.

[0021] Figure 3It is a schematic diagram of the structure of the second frame.

[0022] Figure 4 The utility model is a schematic structural diagram of an embodiment.

[0023] Figure 5 It is a structural schematic diagram of another embodiment of the utility model.

[0024] Among them, the reference numerals in the figure are:

[0025] Frame 1, filter element 2,

[0026] The first frame 11, the first connecting support 111, the second frame 12, the second connecting support 121, the ventilation window 13, the cavity 14,

[0027] Support layer 21 , clamping plate 22 , gap 221 , color indicator 23 , filter layer 24 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] In one embodiment of the utility model, an air filter with color indication is provided, which is used to filter harmful gas pollutants such as hydrogen sulfide, sulfur dioxide, formaldehyde, etc. in the air to improve the cleanliness of the air; Figure 1-Figure 4 , which includes a frame 1 and a filter element 2, the frame 1 is used to fix the filter element 2; "fixed" means that the filter element 2 is fixedly connected to the frame 1 to make the connection between the two stable, and also means that the filter element 2 is fixedly connected to the external air treatment equipment so that the filter element 2 can be used to filter air; the frame 1 includes a first frame 11 and a second frame 12 connected to each other; the first frame 11 and the second frame 12 are bonded by glue, or are clamped by a connecting part, or are connected in other ways, which are not limited here; a cavity 14 is formed between the first frame 11 and the second frame 12, and the filter element 2 is installed in the cavity 14; the installation method of the filter element 2 in the cavity 14 can be bonding with glue, clamping through the frame 1, or other installation methods, and its installation method is not limited here.

[0033] refer to Figure 4 and Figure 5 The filter element 2 includes a support layer 21 and a color indicator 23; the support layer 21 is made of PET, rubber, plastic, metal or other hard materials, so that it has a supporting force so that the color indicator 23 can be fixed on the support layer 21, and the support layer 21 can be used to support the filter element 2, so that the filter element 2 is not easily deformed when air passes through; the color indicator 23 can absorb pollutants in the air, and the color indicator 23 is used to change color after absorbing the pollutants. The color change can be observed by the naked eye, so that the use of the filter element 2 can be observed from the outside.

[0034] Furthermore, the color indicator 23 is potassium permanganate; potassium permanganate can absorb harmful substances such as formaldehyde, paint, volatile organic compounds, etc., and is thereby used to filter the air to improve the cleanliness of the air; in addition, after absorbing harmful gases, the color of potassium permanganate can change from purple-red to other colors with obvious recognition such as black, yellow, brown, and its color can deepen as the amount of harmful gases absorbed increases, so that it can be used as a color indicator 23.

[0035] Compared with the prior art, the one or more technical solutions in the air filter with color indication provided by the embodiment of the utility model have at least one of the following technical effects:

[0036] The filter element 2 includes a support layer 21 and a color indicator 23. The support layer 21 is used to fix the position of the color indicator 23 so that the color indicator 23 is stably connected to the frame 1. The color indicator 23 is set to potassium permanganate. Potassium permanganate has the function of adsorbing pollutants and can change color after adsorption, so that the use degree of the filter element 2 can be known externally, so as to grasp the replacement time of the filter element 2. It is easy to use to avoid replacing the filter element 2 too early and wasting consumables, or replacing the filter element 2 too late and reducing the air purification effect.

[0037] In one embodiment of the present invention, reference Figure 4 , the color indicator 23 is set to a potassium permanganate solution; during the production, the support layer 21 is immersed in the potassium permanganate solution, and then through the steps of drying and reinforcement, the potassium permanganate solution forms a covering attached to the surface of the support layer 21; when the air passes through the filter element 2, the solidified potassium permanganate solution adsorbs the harmful gas to purify the air, and the color changes to indicate the degree of use of the filter element 2.

[0038] Furthermore, the support layer 21 is configured as a mesh structure, and a plurality of pores (not shown in the figure) for air to pass through are provided on the support layer 21; air can pass through the plurality of pores to increase the contact area between the air and potassium permanganate, thereby enhancing the adsorption and color development effect of potassium permanganate; in particular, potassium permanganate is attached to the inner wall of the pore to increase the contact area between the air and potassium permanganate.

[0039] Furthermore, the filter element 2 includes a filter layer 24 ; the filter layer 24 is disposed on the outside of the support layer 21 , and the filter layer 24 is used for filtering air.

[0040] In particular, the adsorption of harmful gases by the color indicator 23 is mainly used to change its own color, and the effect of filtering gas and purifying air is mainly achieved by the filter layer 24, so that the filter element 2 has both the effects of purifying air and displaying the degree of use; at the same time, when the filter element 2 has only a two-layer structure of a support layer 21 and a filter layer 24, the thickness of the filter element 2 can be reduced, the occupied volume is small, and it is convenient to install it in the air treatment equipment.

[0041] In another embodiment of the present invention, the filter element 2 may further include other supporting structures or filtering structures in addition to the supporting layer 21 and the filtering layer 24 to improve the filtering performance of the filter element 2 .

[0042] Furthermore, the filter layer 24 is composed of at least one of meltblown cloth or electrostatic cotton cloth, that is, the filter layer 24 contains meltblown cloth but not electrostatic cotton cloth, contains electrostatic cotton cloth but not meltblown cloth, and contains both meltblown cloth and electrostatic cotton cloth. It should be noted that meltblown cloth and electrostatic cotton cloth are both existing materials that can be directly obtained by technicians in this field, and both have better isolation and adsorption effects on air pollutants, so as to purify the air.

[0043] In another embodiment of the present invention, the filter layer 24 may be made of other materials with adsorption properties, such as activated carbon, filter cotton, etc.

[0044] In one embodiment of the present invention, reference Figure 5 The color indicator 23 is set as potassium permanganate particles; the support layer 21 includes two plywoods 22, and a gap 221 is formed between the two plywoods 22. The color indicator 23 is placed in the gap 221 so that the color indicator 23 is not easy to fall; the particle size of the color indicator 23 is less than or equal to the spacing of the gap 221, so as to facilitate the connection between the color indicator 23 and the support layer 21.

[0045] refer to Figure 2 and Figure 3 A plurality of air windows 13 are provided on the first frame 11 and the second frame 12, and the air windows 13 are connected to the cavity 14. The air windows 13 are used to allow air to pass through so that the air flows through the filter element 2 to achieve filtration; the positions of the plurality of air windows 13 on the first frame 11 correspond to the plurality of air windows 13 on the second frame 12 one by one, and the air enters the inner cavity from the air windows 13 of the first frame 11, passes through the filter element 2, and then passes out from the air windows 13 of the second frame 12, so that the air flows smoothly and reduces the obstruction to the air.

[0046] Furthermore, the shape of some ventilation windows 13 is a triangle. The triangle has stability, so that the structures of the first frame 11 and the second frame 12 are more stable.

[0047] refer to Figure 2 and Figure 3 A plurality of first connecting supports 111 are provided on the first frame 11, and a plurality of second connecting supports 121 are provided on the second frame 12. The first connecting supports 111 and the second connecting supports 121 cooperate with each other to clamp the filter element 2, so that the filter element 2 in the cavity 14 is not easily shaken by the air, so as to improve the connection stability between the components; in addition, it is not easy for the air to form a vortex when passing through the first frame 11 and the second frame 12, so as to increase the flow rate of the air and shorten the filtering time.

[0048] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0049] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. An air filter with color indication, used for filtering pollutants in the air, comprising a frame (1) and a filter element (2); characterized in that: The frame (1) comprises a first frame body (11) and a second frame body (12) which are connected to each other; a cavity (14) is formed between the first frame body (11) and the second frame body (12), and the filter element (2) is installed in the cavity (14); the filter element (2) comprises a support layer (21) and a color indicator (23); the support layer (21) is used to fix the color indicator (23); the color indicator (23) can adsorb the pollutants, and the color indicator (23) is used to change color after adsorbing the pollutants; the color indicator (23) is potassium permanganate.

2. The air filter with color indication according to claim 1, characterized in that: The color indicator (23) forms a covering and is attached to the support layer (21).

3. The air filter with color indication according to claim 2, characterized in that: The support layer (21) is configured as a mesh structure; the support layer (21) is provided with a plurality of pores for allowing air to pass through.

4. The air filter with color indication according to claim 1, characterized in that: The color indicator (23) is potassium permanganate particles.

5. The air filter with color indication according to claim 4, characterized in that: The support layer (21) comprises two clamping plates (22); a gap (221) is formed between the two clamping plates (22); the color indicator (23) is placed in the gap (221); the particle size of the color indicator (23) is smaller than or equal to the spacing of the gap (221).

6. The air filter with color indication according to any one of claims 1 to 5, characterized in that: The filter element (2) comprises a filter layer (24); the filter layer (24) is arranged on the outside of the support layer (21), and the filter layer (24) is used for filtering air.

7. The air filter with color indication according to claim 6, characterized in that: The filter layer (24) is composed of at least one of melt-blown cloth and electrostatic cotton cloth.

8. The air filter with color indication according to any one of claims 1 to 5, characterized in that: The first frame (11) and the second frame (12) are both provided with a plurality of air permeable windows (13); the air permeable windows (13) are connected to the cavity (14), and the air permeable windows (13) are used to allow air to pass through; the positions of the plurality of air permeable windows (13) on the first frame (11) and the plurality of air permeable windows (13) on the second frame (12) correspond one to one.

9. The air filter with color indication according to claim 8, characterized in that: Some of the ventilation windows (13) are in a triangular shape.

10. The air filter with color indication according to any one of claims 1 to 5, characterized in that: The first frame (11) is provided with a plurality of first connecting supports (111), and the second frame (12) is provided with a plurality of second connecting supports (121). The first connecting supports (111) and the second connecting supports (121) cooperate with each other to clamp the filter element (2).

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