Air filters and air purifiers including them

Abstract

The present invention provides an air filter comprising: a first filter frame having a plurality of first chambers; a second filter frame having a plurality of second chambers and disposed on the rear side of the first filter frame; and a filter medium contained in the plurality of first chambers and the plurality of second chambers for filtering air, wherein the first filter frame and the second filter frame are configured such that, when viewed from the front, the center of each of the plurality of second chambers is offset vertically from the center of each of the plurality of first chambers.

Description

Technical Field

[0001] This invention relates to an air filter and an air purifier including the same. Background Technology

[0002] Generally speaking, an air purifier is a device that draws in polluted indoor air and filters out dust, odor particles, and other contaminants to purify it into clean air. As described above, an air purifier draws in and purifies the surrounding polluted air, then discharges the purified air outside the purifier, thereby purifying indoor air.

[0003] Meanwhile, air purifiers may include filters that remove dust and odor particles from the air flowing into the purifier. In particular, deodorizing filters that remove odor particles from the air are used by filling the inside of the filter frame with multiple filter media for filtering the flowing air.

[0004] The applicant's Korean Patent Publication No. 10-2018-0005487, "Air Filter for Air Conditioning" (Patent Document 1), discloses an air filter capable of deodorizing air. In this air filter of Patent Document 1, air channels formed in the front and rear frames are filled with adsorbent materials that can filter air.

[0005] However, when the air filter of Patent Document 1 is viewed from the front, the empty spaces of the air passages formed in the front frame and the empty spaces of the air passages formed in the rear frame partially overlap. That is, in the overlapping portion of the front and rear frames, there is an area on either side where no adsorbent material is included. Therefore, a portion of the air passing through this area will not be filtered by the adsorbent material, resulting in a reduction in the air filter's purification efficiency. Furthermore, the area of ​​the overlapping empty spaces varies depending on the orientation of the air filter relative to the ground, so when the air filter is incorrectly rotated and installed according to the user's needs, or when the air purifier with the air filter installed rotates itself, the air filter's purification efficiency cannot be maintained stably.

[0006] Therefore, there is a need for a filter frame that minimizes the degradation of air filter purification efficiency while maintaining stable purification efficiency without reducing it, even when the air filter is rotating.

[0007] Existing technical documents

[0008] Patent documents

[0009] (Patent Document 1) US Patent Publication 2018 / 0221805 (Publication Date: August 9, 2018) Summary of the Invention

[0010] Technical issues

[0011] In view of the above background, an embodiment of the present invention was invented, which aims to provide an air filter that can prevent a decrease in the purification efficiency of the air filter by minimizing the flow rate of air that passes through the air filter without being filtered by the filter media.

[0012] Furthermore, according to one embodiment of the present invention, an air filter is intended to maintain a constant purification efficiency without deterioration even when the air filter is rotated.

[0013] Problem-solving methods

[0014] According to one aspect of the present invention, an air filter is provided, the air filter comprising: a first filter frame having a plurality of first chambers; a second filter frame having a plurality of second chambers and disposed on the rear side of the first filter frame; and a filter medium contained in the plurality of first chambers and the plurality of second chambers for filtering air, wherein the first filter frame and the second filter frame are configured such that, when viewed from the front, the center of each of the plurality of second chambers is offset vertically from the center of each of the plurality of first chambers.

[0015] Furthermore, when the first filter frame is placed vertically relative to the ground, each of the plurality of first chambers includes a first material space and a first empty space, the first material space being filled with the filter medium, and the first empty space being disposed above the first material space and not including the filter medium. When the second filter frame is placed vertically relative to the ground, each of the plurality of second chambers includes a second material space and a second empty space, the second material space being filled with the filter medium, and the second empty space being disposed above the second material space and not including the filter medium. The first filter frame and the second filter frame may be configured such that, when viewed from the front, at least a portion of the first empty space overlaps with at least a portion of the second material space, and at least a portion of the first material space overlaps with at least a portion of the second empty space, in the state where the first filter frame and the second filter frame are placed vertically relative to the ground.

[0016] Furthermore, the first filter frame and the second filter frame can be configured such that, when viewed from the front, the second empty space overlaps with the first material space and is not exposed to the outside, and when viewed from the rear, the first empty space overlaps with the second material space and is not exposed to the outside.

[0017] In addition, an air filter may be provided in which the first filter frame and the second filter frame are configured such that, when viewed from the front, the center of each of the plurality of second chambers is offset from the center of each of the plurality of first chambers in the left-right direction.

[0018] Furthermore, the first filter frame and the second filter frame may be configured such that any one of the plurality of first chambers overlaps with a portion of each of four or more adjacent second chambers.

[0019] Furthermore, when the first filter frame is placed vertically relative to the ground, each of the plurality of first chambers includes a first material space and a first empty space, the first material space being filled with the filter medium, and the first empty space being disposed above the first material space and not including the filter medium. When the second filter frame is placed vertically relative to the ground, each of the plurality of second chambers includes a second material space and a second empty space, the second material space being filled with the filter medium, and the second empty space being disposed above the second material space and not including the filter medium. The first filter frame and the second filter frame may be configured such that, in the state where the first filter frame and the second filter frame are placed vertically relative to the ground, at least a portion of the first empty space overlaps with the second material space of two second chambers offset from the upper side of the first chamber, and at least a portion of the first material space overlaps with the second empty space of two second chambers offset from the lower side of the first chamber.

[0020] Furthermore, when viewed from the front, the first chamber and the second chamber may have a rectangular shape of the same size.

[0021] Furthermore, the first filter frame and the second filter frame may be configured such that, when viewed from the front, the center of each of the plurality of second chambers is offset from the center of each of the plurality of first chambers in a left-right direction; when viewed from the front with the first filter frame and the second filter frame placed vertically relative to the ground and rotated 90° in a direction perpendicular to the front-back direction, the second empty space overlaps with the first material space without being exposed; and when viewed from the rear, the first empty space overlaps with the second material space without being exposed.

[0022] The filter medium can be in particulate form.

[0023] In addition, an air purifier may be provided, comprising: an air filter; and a blower that provides airflow so that outside air flows through the air filter.

[0024] The effects of the invention

[0025] According to one embodiment of the present invention, by minimizing the flow rate of air passing through the air filter without being filtered by the filter medium, the effect of preventing a reduction in the purification efficiency of the air filter is achieved.

[0026] Furthermore, according to one embodiment of the present invention, even if the air filter is rotated, it still has the effect of maintaining a constant purification efficiency without deterioration. Attached Figure Description

[0027] Figure 1 This is a perspective view showing an air purifier according to an embodiment of the present invention.

[0028] Figure 2 yes Figure 1 An exploded 3D view of an air purifier.

[0029] Figure 3 yes Figure 2 A 3D view and a magnified view of a part of the air purifier.

[0030] Figure 4 When setting multiple Figure 3 A three-dimensional view of an air filter with a filter frame.

[0031] Figure 5 yes Figure 4 An exploded 3D view of an air filter.

[0032] Figure 6 yes Figure 5 An enlarged view of part A.

[0033] Figure 7 yes Figure 5An enlarged view of part B.

[0034] Figure 8 It shows when Figure 4 The front view when a portion of the first filter frame and a portion of the second filter frame overlap.

[0035] Figure 9 It is shown Figure 8 A view of the first and second filter frames rotated 90°.

[0036] Figure 10 This is a flowchart illustrating a method for manufacturing an air filter according to an embodiment of the present invention. Detailed Implementation

[0037] Hereinafter, specific embodiments for implementing the technical concept of the present invention will be described in detail with reference to the accompanying drawings.

[0038] Furthermore, in describing the present invention in detail, if a specific description of a related known structure or function is considered to deviate from the spirit of the present invention, its detailed description will be omitted.

[0039] Furthermore, it should be understood that when a component is referred to as “connecting,” “supporting,” or “flowing into” other components, it may be directly connected to, supporting, or flowing into those other components, or it may have other intermediary components.

[0040] The terminology used in this specification is for describing particular embodiments only and is not intended to limit the invention. Unless otherwise stated, the singular form also includes the plural form.

[0041] The term "comprising" as used in this specification is used to specifically identify a particular feature, region, integer, step, operation, element, and / or ingredient, but does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, ingredients, and / or groups.

[0042] Furthermore, it should be stated in advance that descriptions of directions such as top, bottom, front, and back in this specification are based on the accompanying drawings. When the illustrated orientation of the object changes, the description may differ. On the other hand, in this specification, the up-down, left-right, and front-back directions can be... Figures 1 to 9 The directions of the coordinate axes are shown.

[0043] Hereinafter, the specific structure of the air purifier 1 according to the first embodiment of the present invention will be described with reference to the accompanying drawings.

[0044] In the following text, refer to Figure 1 and Figure 2According to the first embodiment of the present invention, the air purifier 1 can purify polluted air into clean air by filtering dust and odor particles from the air flowing into the air purifier 1. Furthermore, the air purifier 1 can draw in air from outside the air purifier and discharge the purified air to the outside. This air purifier 1 may include a housing 10, a blower 20, and an air filter 30.

[0045] The housing 10 can support the blower 20 and the air filter 30, and can provide space for accommodating the blower 20 and the air filter 30. This housing 10 can be configured to surround the blower 20 and the air filter 30.

[0046] The blower 20 can be driven to allow polluted air from outside the air purifier 1 to flow into the interior of the air purifier 1. This blower 20 can provide airflow so that the incoming air passes through the air filter 30 (described later). Furthermore, the blower 20 can be driven to deliver clean air filtered by the air filter 30 inside the air purifier 1 to the outside.

[0047] Air filter 30 can filter air flowing in from outside the air purifier 1 into clean air. For example, air filter 30 can be an activated carbon deodorizing filter. Such air filter 30 may include filter frame 100, filter screen 200 and filter medium 300.

[0048] Reference Figure 3 The filter frame 100 can accommodate the filter media 300 and can be supported by the housing 10. Such filter frame 100 may include a body 111 and a detachment prevention member 112.

[0049] The main body 111 may have multiple chambers 111a that can accommodate the filter medium 300.

[0050] The chamber 111a may be a predetermined space at least partially surrounded by the body 111. Multiple granular filter media 300 may be accommodated in this chamber 111a. For example, when the entire space of the chamber 111a is filled with filter media 300, the air pressure difference becomes high, which may reduce the purification efficiency; therefore, only a portion of the space of the chamber 111a may be filled with filter media 300.

[0051] The detachment prevention member 112 prevents the filter medium 300 contained in the chamber 111a from detaching from the chamber 111a. Multiple detachment prevention members 112 may be provided. Furthermore, multiple detachment prevention members 112 may extend in the same direction, for example, they may extend in a vertical direction.

[0052] The two ends of the plurality of detachment prevention members 112 may be connected to the main body 111, and may be spaced apart from each other so that they are not connected to each other between the two ends. For example, the plurality of detachment prevention members 112 may be arranged spaced apart from each other in the left-right direction. In this case, the detachment prevention members 112 may only be supported by the main body 111 at their two ends in the vertical direction, without being connected to other detachment prevention members 112 adjacent to the two ends in the left-right direction. In addition, the plurality of detachment prevention members 112 include an injection-moldable material and may be integrally connected to the main body 111 by injection molding.

[0053] Furthermore, the plurality of detachment prevention members 112 may be configured such that the distance between them is less than the minimum width of the particulate filter medium 300. Thus, the filter medium 300 contained in the chamber 111a can be contained in the chamber 111a and cannot be detached from the outside of the chamber 111a by the plurality of detachment prevention members 112.

[0054] On the other hand, refer to Figure 4 Multiple filter frames 100 can be provided, and the multiple filter frames 100 may include a first filter frame 110 and a second filter frame 120. Hereinafter, a structure with two filter frames 100, including a first filter frame 110 and a second filter frame 120, is described, but this is only an example, and more than three filter frames 100 may be provided. Furthermore, the reference numerals for the aforementioned body 111, detachment prevention member 112, and chamber 111a may be referenced in the following descriptions of the first body 111, the first detachment prevention member 112, and the first chamber 111a, respectively.

[0055] Reference Figure 5 and Figure 6 The first filter frame 110 may be disposed on one side of the filter screen 200 (e.g., Figure 5 (Front side). This first filter frame 110 may include a first body 111 and a first detachment prevention member 112.

[0056] The first body 111 may have a plurality of first chambers 111a capable of accommodating the filter medium 300.

[0057] The first chamber 111a may be a predetermined space at least partially surrounded by the first body 111. The filter medium 300 may be accommodated in this first chamber 111a. Furthermore, the first chamber 111a may have, for example, a rectangular shape. This first chamber 111a may include a first material space 111a-1 and a first empty space 111a-2.

[0058] When the first filter frame 110 is placed vertically relative to the ground, the first material space 111a-1 can be the space in the first chamber 111a filled with filter media 300. The first material space 111a-1 includes not only the space occupied by the filter media 300 in the first chamber 111a, but also the tiny spaces formed between the filter media 300.

[0059] When the first filter frame 110 is placed vertically relative to the ground, the first empty space 111a-2 can be the space in the first chamber 111a that is not filled with filter medium 300. When the first filter frame 110 is placed vertically relative to the ground, the filter medium 300 is located below the first chamber 111a due to gravity, so the first empty space 111a-2 can be located on the upper side compared to the first material space 111a-1.

[0060] As described above, the first material space 111a-1 and the first empty space 111a-2 can be separated by the filter medium 300. In other words, the space in the first chamber 111a can be divided into the first material space 111a-1 and the first empty space 111a-2 by the space occupied by the filter medium 300 in the first chamber 111a. Furthermore, the first material space 111a-1 includes not only the space occupied by the filter medium 300 in the first chamber 111a, but also the tiny spaces formed between the filter media 300.

[0061] Furthermore, when the first filter frame 110 rotates, the space occupied by the first material space 111a-1 and the first empty space 111a-2 in the first chamber 111a can change, corresponding to the movement of the filter medium 300 due to gravity.

[0062] The first detachment prevention member 112 prevents the filter medium 300 contained inside the first chamber 111a from detaching from the first chamber 111a. Multiple such first detachment prevention members 112 may be provided. Furthermore, the multiple first detachment prevention members 112 may extend in the same direction, for example, they may extend in a vertical direction.

[0063] The two ends of a plurality of first detachment prevention members 112 may be connected to a first body 111. For example, the plurality of first detachment prevention members 112 may be integrally connected to the first body 111 by injection molding. Alternatively, the plurality of first detachment prevention members 112 may be spaced apart from each other at their two ends so as not to be connected to each other. For example, the plurality of first detachment prevention members 112 may be spaced apart from each other in the left-right direction. In this case, only the two ends of the first detachment prevention members 112 in the vertical direction are supported by the first body 111, and are not connected to other first detachment prevention members 112 adjacent to each other in the left-right direction. That is, the arrangement for connecting the first detachment prevention members 112 adjacent in the left-right direction can be omitted.

[0064] Therefore, multiple first detachment prevention members 112 and the first body 111 can be easily manufactured by injection molding, thereby reducing manufacturing costs. In addition, since the multiple first detachment prevention members 112 extend in the same direction and the configuration of connecting them to each other is omitted, the pressure difference of the air flowing through the first filter frame 110 is reduced.

[0065] Although the above description describes the case where multiple first detachment prevention members 112 extend in the vertical direction, the extension direction is not limited to the vertical direction, and as another example, they can extend in the horizontal direction. In this case, the multiple first detachment prevention members 112 can be arranged at intervals in the vertical direction, and only the two ends in the horizontal direction are supported by the first body 111, without being connected to other first detachment prevention members 112 adjacent to the two sides in the vertical direction.

[0066] Reference Figure 5 and Figure 7 The second filter frame 120 may be disposed on the other side of the filter screen 200 (e.g., Figure 5 (The rear side). This second filter frame 120 may include a second body 121 and a second detachment prevention member 122.

[0067] The second body 121 may have multiple second chambers 121a capable of accommodating the filter medium 300.

[0068] The second chamber 121a may be a predetermined space at least partially surrounded by the second body 121. The filter medium 300 may be accommodated in this second chamber 121a. Furthermore, as an example, the second chamber 121a may have a rectangular shape with the same dimensions as the first chamber 111a. This second chamber 121a may include a second material space 121a-1 and a second empty space 121a-2.

[0069] When the second filter frame 120 is placed vertically relative to the ground, the second material space 121a-1 can be the space in the second chamber 121a filled with the filter medium 300. The second material space 121a-1 includes not only the space occupied by the filter medium 300 in the second chamber 121a, but also the tiny spaces formed between the filter media 300.

[0070] When the second filter frame 120 is placed vertically relative to the ground, the second empty space 121a-2 can be the space in the second chamber 121a that is not filled with filter medium 300. When the second filter frame 120 is placed vertically relative to the ground, the filter medium 300 is located on the lower side of the second chamber 121a due to gravity, so the second empty space 121a-2 is positioned on the upper side compared to the second material space 121a-1.

[0071] As described above, the second material space 121a-1 and the second empty space 121a-2 can be separated by the filter medium 300. In other words, the space in the second chamber 121a can be divided into the second material space 121a-1 and the second empty space 121a-2 by the space occupied by the filter medium 300 in the second chamber 121a. Furthermore, the second material space 121a-1 includes not only the space occupied by the filter medium 300 in the second chamber 121a, but also the small spaces formed between the filter media 300. Moreover, when the second filter frame 120 rotates, the space occupied by the second material space 121a-1 and the second empty space 121a-2 in the second chamber 121a can change corresponding to the movement of the filter medium 300 due to gravity.

[0072] The second detachment prevention member 122 prevents the filter medium 300 contained inside the second chamber 121a from detaching from the second chamber 121a. Multiple such second detachment prevention members 122 may be provided. Furthermore, the multiple second detachment prevention members 122 may extend in the same direction, for example, they may extend in a left-right direction.

[0073] The two ends of a plurality of second detachment prevention members 122 may be connected to the second body 121. For example, the plurality of second detachment prevention members 122 may be integrally connected to the second body 121 by injection molding. Furthermore, the plurality of second detachment prevention members 122 may be spaced apart from each other at their two ends so as not to be connected to each other. For example, the plurality of second detachment prevention members 122 may be spaced apart from each other in the vertical direction. In this case, the second detachment prevention members 122 may only be supported by the second body 121 at their two ends in the left-right direction, without being connected to other second detachment prevention members 122 adjacent to each other in the vertical direction. That is, the arrangement for connecting the second detachment prevention members 122 adjacent in the vertical direction can be omitted.

[0074] Therefore, multiple second detachment prevention members 122 and the second body 121 can be easily manufactured by injection molding, thereby reducing manufacturing costs. In addition, since the multiple second detachment prevention members 122 extend in the same direction and the configuration of connecting them to each other is omitted, the pressure difference of the air flowing through the second filter frame 120 is reduced.

[0075] Although the above description describes the case where multiple second detachment prevention members 122 extend in the left-right direction, the extension direction is not limited to the left-right direction, and as another example, they can extend in the up-down direction. In this case, the second detachment prevention members 122 can be spaced apart in the left-right direction and not connected to other second detachment prevention members 122 adjacent to the left-right sides, with only the up-down ends supported by the second body 121. On the other hand, the direction in which the multiple second detachment prevention members 122 extend can be substantially perpendicular to the direction in which the multiple first detachment prevention members 112 extend, but is not limited to this, and they can extend in the same direction.

[0076] On the other hand, the first filter frame 110 and the second filter frame 120 can be configured to minimize the flow rate of air that is not filtered by the filter medium 300 and flows through the air filter 30. For example, the first filter frame 110 and the second filter frame 120 can be arranged such that the center of each of the plurality of first chambers 111a is offset from the center of each of the plurality of second chambers 121a by both vertical and horizontal directions. The state in which the first filter frame 110 and the second filter frame 120 are placed vertically relative to the ground will be described below.

[0077] Reference Figure 8The first filter frame 110 and the second filter frame 120 can be configured such that air flowing through the air filter 30 flows through either the first material space 111a-1 or the second material space 121a-1. For example, the first filter frame 110 and the second filter frame 120 can be configured such that at least a portion of the first empty space 111a-2 overlaps with at least a portion of the second material space 121a-1, and at least a portion of the first material space 111a-1 overlaps with at least a portion of the second empty space 121a-2. That is, the first filter frame 110 and the second filter frame 120 can be configured such that the first empty space 111a-2 does not overlap with the second empty space 121a-2. In this case, when viewed from the front, the second empty space 121a-2 overlaps with the first material space 111a-1 and is not exposed to the front. Furthermore, when viewed from the rear, the first empty space 111a-2 overlaps with the second material space 121a-1 and is not exposed to the rear. Therefore, the air flowing through the air filter 30 can be filtered by the filter medium 300 filling the second material space 121a-1 or the filter medium 300 of the second material space 121a-1.

[0078] As a more specific example, the first filter frame 110 and the second filter frame 120 may be arranged such that the first chamber 111a overlaps with a portion of each of four or more adjacent second chambers 121a. In this case, at least a portion of the first empty space 111a-2 overlaps with the second material spaces 121a-1 of two second chambers 121a that are offset from the upper side of the first chamber 111a. That is, the first empty space 111a-2 overlaps with two second material spaces 121a-1. Furthermore, at least a portion of the first material space 111a-1 overlaps with the second empty spaces 121a-2 of two second chambers 121a that are offset from the lower side of the first chamber 111a. That is, the first material space 111a-1 overlaps with two second empty spaces 121a-2.

[0079] As described above, by setting the air filter 30 to overlap the first empty space 111a-2 with the second material space 121a-1 and the second empty space 121a-2 with the first material space 111a-1, the flow rate of the air that does not flow through the filter medium 300 is minimized, thus improving the air filtration efficiency.

[0080] Furthermore, by configuring the air filter 30 such that the first chamber 111a and the second chamber 121a are rectangular and the first chamber 111a overlaps with four adjacent second chambers 121a, the air filtration efficiency is not reduced even when the air filter 30 is rotated. For example, refer to... Figure 9Even if the first filter frame 110 and the second filter frame 120 are rotated 90° from a direction perpendicular to the front-back direction, the first empty space 111a-2 overlaps with the second material space 121a-1, and the second empty space 121a-2 can overlap with the first material space 111a-1. Therefore, even if the air filter 30 is rotated, there will be no overlap between the first empty space 111a-2 and the second empty space 121a-2, and the air purification efficiency of the air filter 30 can be maintained without causing a decrease in efficiency.

[0081] Refer again Figure 5 The filter screen 200 prevents the filter medium 300 from detaching from the first chamber 111a and the second chamber 121a. This filter screen 200 can be disposed between the first filter frame 110 and the second filter frame 120. In other words, a plurality of first chambers 111a can be disposed on one side of the filter screen 200, and a plurality of second chambers 121a can be disposed on the other side of the filter screen 200. This filter screen 200 can have pores (not shown) through which air can pass, for example, it can be formed as a mesh structure. The pores formed in the filter screen 200 can be smaller than the minimum width of the particulate filter medium 300.

[0082] Furthermore, the filter screen 200 can separate the first chamber 111a and the second chamber 121a, preventing the filter media 300 filled in the first chamber 111a and the second chamber 121a from mixing together. Therefore, even if the air filter 30 rotates, the amount of filter media 300 filled in the first chamber 111a and the second chamber 121a can be maintained. In addition, the filter screen 200 can be connected between the first filter frame 110 and the second filter frame 120.

[0083] The filter medium 300 can filter air flowing into the air purifier 1 from the outside into clean air. This filter medium 300 can be provided in multiple granular forms and can be contained in multiple first chambers 111a and second chambers 121a. Furthermore, the filter medium 300 can be exposed to the outside through gaps between multiple detachment prevention members 112.

[0084] The filter medium 300 can be granular and can have a predetermined width. Here, granular filter medium 300 refers to particles, and can include concepts such as round type and pellet type. When the granular filter medium 300 is round, the particle size of the filter medium 300 can be greater than or equal to 1.5 mm and less than or equal to 3.5 mm. Furthermore, the minimum width and maximum width of the filter medium 300 can be the same. However, this is only an example; the filter medium 300 can be provided in the form of a circular cross-section with a diameter greater than or equal to 1.5 mm and less than or equal to 3.5 mm and a particle form with a height greater than or equal to 2.5 mm and less than or equal to 11 mm. In this case, the minimum width of the filter medium 300 can be the diameter of the circular cross-section of the particle. In this specification, the minimum width of the filter medium 300 refers to the width of the filter medium 300 along an imaginary line extending in one direction and passing through the center of the filter medium 300, having the minimum length of the filter medium 300. On the other hand, the filter medium 300 can adsorb and remove pollutants from the air and can be, for example, activated carbon. However, the filter medium 300 is not limited to this; any known material capable of adsorbing pollutants can be used as the filter medium 300.

[0085] According to an embodiment of the present invention, the detachment prevention member 112 and the body 111 of the air filter 30 are easily manufactured by injection molding, thus having the effect of reducing manufacturing costs and simplifying the process.

[0086] In addition, since the multiple detachment prevention components 112 are only connected to the main body 111 at both ends and the configuration of connecting to each other is omitted, the pressure difference is reduced, thereby saving manufacturing costs and simplifying the process.

[0087] Furthermore, since the first detachment prevention member 112 and the second detachment prevention member 122 extend in directions perpendicular to each other, they have the effect of reducing the pressure difference of the air flowing through the filter frame 100.

[0088] On the other hand, by setting the air filter 30 to overlap the first empty space 111a-2 with the second material space 121a-1 and the second empty space 121a-2 with the first material space 111a-1, the flow rate of air that does not flow through the filter medium 300 can be minimized, thus improving the air filtration efficiency.

[0089] Furthermore, even if the air filter 30 is rotated, there will be no overlap between the first empty space 111a-2 and the second empty space 121a-2, and the air purification efficiency of the air filter 30 can be maintained without causing a decrease in efficiency.

[0090] In the following text, reference will be made to Figure 10A method (S10) for manufacturing an air filter 30 according to an embodiment of the present invention is described.

[0091] In the air filter manufacturing method (S10), the air filter 30 can be manufactured by connecting the filter frame 100 formed by injection molding and the filter screen 200. This air filter manufacturing method (S10) may include the steps of forming the filter frame (S100), providing the filter medium (S200), providing the filter screen (S300), and connecting the filter frame (S400).

[0092] In the step of forming the filter frame (S100), the filter frame 100 can be formed by integrally injection molding the main body 111 on which the chamber 111a is formed and the plurality of detachment prevention members 112. The filter frame 100 formed in this step of forming the filter frame (S100) is injection molded such that the two ends of the plurality of detachment prevention members 112 are connected to the main body 111. Therefore, in the step of providing the filter screen (S300), the filter medium 300 disposed in the chamber 111a may not detach from the chamber 111a. This step of forming the filter frame (S100) may include the step of forming a first filter frame (S110) and the step of forming a second filter frame (S120).

[0093] In the step (S110) of forming the first filter frame, the first body 111 having the first chamber 111a formed thereon is integrally injection molded with a plurality of first detachment prevention members 112, and the first filter frame 110 is formed by injection molding.

[0094] In the step (S120) of forming the second filter frame, the second filter frame 120, which integrally connects the second body 121, on which the second chamber 121a is formed, with a plurality of second detachment prevention members 122, can be formed by injection molding.

[0095] On the other hand, the filter frame 100 formed in the step of forming the filter frame (S100) may include an injection-moldable material, such as polypropylene (PP). Furthermore, the injection-moldable material can be injected into the first filter frame 110 and the second filter frame 120 through the injection injection port 113. In this step of forming the first filter frame (S110), the filter frame 100 can be injection molded under temperature conditions of 190°C or higher and 250°C or lower, and pressure conditions of 35 bar or higher and 40 bar or lower. Furthermore, in the step of forming the filter frame (S100), the injection molding time, including cooling time and injection time, can be 25 seconds or more and 35 seconds or less.

[0096] In the step of providing the filter medium (S200), the filter medium 300 may be provided to a plurality of first chambers 111a and the filter medium 300 may be provided to a plurality of second chambers 121a.

[0097] In the step of providing the filter screen (S300), a filter screen 200 with a mesh structure can be provided.

[0098] In the connection step (S400), the filter screen 200 can be connected between the first filter frame 110 and the second filter frame 120. In the connection step (S400), the filter screen 200 can separate the first chamber 111a and the second chamber 121a, so that the filter media 300 contained in the first chamber 111a and the second chamber 121a are not mixed together.

[0099] Although embodiments of the invention have been described above by way of specific examples, these are merely examples and the invention is not limited thereto. The invention should be interpreted as having the broadest scope of the technical concepts disclosed in this specification. Those skilled in the art can implement patterns of shapes not specified by combining / substituting the disclosed embodiments; however, these should also be included within the scope of the invention. Furthermore, those skilled in the art can readily modify or alter the disclosed embodiments based on this specification, and such modifications or alterations are obviously also included within the scope of the invention.

Claims

1. An air filter, comprising: The first filter frame has multiple first chambers; The second filter frame has multiple second chambers and is disposed on the rear side of the first filter frame; as well as Filter media, contained in the plurality of first chambers and the plurality of second chambers, are used for filtering air. The first filter frame and the second filter frame are configured to, When viewed from the front, the center of each of the plurality of second chambers is offset vertically from the center of each of the plurality of first chambers. The characteristic is that, when viewed from the front of the air filter, the filter media contained in the plurality of first chambers and the filter media contained in the plurality of second chambers do not overlap, and When the first filter frame and the second filter frame are placed vertically relative to the ground and rotated 90° about an axis extending in the front-rear direction of the air filter, the filter media contained in the plurality of first chambers and the filter media contained in the plurality of second chambers do not overlap when viewed from the front of the air filter.

2. The air filter according to claim 1, wherein, When the first filter frame is placed vertically relative to the ground, each of the plurality of first chambers includes a first material space and a first empty space, the first material space being filled with the filter medium, and the first empty space being disposed above the first material space and not containing the filter medium. When the second filter frame is placed vertically relative to the ground, each of the plurality of second chambers includes a second material space and a second empty space, the second material space being filled with the filter medium, and the second empty space being positioned above the second material space and not containing the filter medium. The first filter frame and the second filter frame are configured to, With the first filter frame and the second filter frame placed vertically relative to the ground, when viewed from the front, at least a portion of the first empty space overlaps with at least a portion of the second material space, and at least a portion of the first material space overlaps with at least a portion of the second empty space.

3. The air filter according to claim 2, wherein, The first filter frame and the second filter frame are configured to, With the first filter frame and the second filter frame placed vertically relative to the ground, when viewed from the front, the second empty space overlaps with the first material space and is not exposed to the outside; and when viewed from the rear, the first empty space overlaps with the second material space and is not exposed to the outside.

4. The air filter according to claim 1, wherein, The first filter frame and the second filter frame are configured to, When viewed from the front, the center of each of the plurality of second chambers is offset from the center of each of the plurality of first chambers in a left-right direction.

5. The air filter according to claim 4, wherein, The first filter frame and the second filter frame are configured such that any one of the plurality of first chambers overlaps a portion of each of four or more adjacent second chambers.

6. The air filter according to claim 5, wherein, When the first filter frame is placed vertically relative to the ground, each of the plurality of first chambers includes a first material space and a first empty space, the first material space being filled with the filter medium, and the first empty space being disposed above the first material space and not containing the filter medium. When the second filter frame is placed vertically relative to the ground, each of the plurality of second chambers includes a second material space and a second empty space, the second material space being filled with the filter medium, and the second empty space being positioned above the second material space and not containing the filter medium. The first filter frame and the second filter frame are configured to, With the first filter frame and the second filter frame placed vertically relative to the ground, At least a portion of the first vacant space overlaps with the second material space of two second chambers offset from the upper side of the first chamber among the plurality of second chambers. At least a portion of the first material space overlaps with the second empty space of two second chambers offset from the lower side of the first chamber among the plurality of second chambers.

7. The air filter according to claim 1, wherein, When viewed from the front, the first chamber and the second chamber have a rectangular shape of the same size.

8. The air filter according to claim 3, wherein, The first filter frame and the second filter frame are configured to, When viewed from the front, the center of each of the plurality of second chambers is offset from the center of each of the plurality of first chambers in a left-right direction. When viewed from the front with the first filter frame and the second filter frame placed vertically relative to the ground and rotated 90° in a direction perpendicular to the front-back direction, the second empty space overlaps with the first material space and is not exposed. Furthermore, when viewed from the rear, the first empty space overlaps with the second material space and is not exposed.

9. The air filter according to claim 1, wherein, The filter medium is in particulate form.

10. An air purifier, comprising: The air filter according to any one of claims 1 to 9; as well as A blower provides airflow so that outside air flows through the air filter.

Images