Filter structure and air purifier intake structure

Abstract

To provide a filter structure and an intake structure for an air cleaner, which allow air to pass through a filter body without passing through gaps in filter attachment, and make the most of the filtering performance of the filter body. [Solution] The filter structure 1 comprises a filter body 10 formed in a sheet shape that is flexible and sized to cover the air intake port, and a fixing part 20 on one side of the filter body 10 that is set to a dimensional relationship corresponding to the size of the outer periphery of the air intake port and is formed so as to surround the inner part of the filter body 10 almost continuously, for fixing the filter body 10 to the outer periphery of the air intake port.

Description

[Technical field]

[0001] The present invention relates to a filter structure and an intake structure for an air purifier, and more particularly to a filter structure for an air purifier that is attached to the intake port of an air purifier to filter air passing through the intake port, and an intake structure for an air purifier to which the filter structure is attached. [Background technology]

[0002] 2. Description of the Related Art Conventionally, it has been proposed to attach a cover to a machine having an air intake surface, such as a cooler, air conditioner, dehumidifier, or air purifier, to prevent dirt from adhering to the air intake surface or other exterior of the machine.

[0003] For example, Japanese Patent Application Laid-Open Publication No. 11-83069 discloses a technique for attaching a cover body with a string or a hook-and-loop fastener at the end of the string, or a cover body with rubber, to a machine in a removable manner. It also discloses providing a folded-in portion on the cover body to accommodate the air intake surfaces of various manufacturers and models of different sizes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-83069

[0005] However, in general, the size of the air intake surface of an air conditioner tends to be larger than that of a floor-standing dehumidifier or air purifier. For this reason, in the above-mentioned conventional technology, when attaching a cover to a dehumidifier or air purifier, a considerable amount of folded-in portion may be required. Therefore, in the above-mentioned conventional technology, the cover is used for both an air conditioner and an air purifier, and there is a risk that the resistance of air intake will decrease at the folded-in portion.

[0006] As a method for attaching a filter for an air purifier to an air intake of an air purifier, a method has been proposed in which hook-and-loop fasteners are attached to the four corners of the filter and the filter is fixed around the air intake via the hook-and-loop fasteners. However, with this method, the air flow resistance of the filter body is greater than the air flow resistance of the gaps that are not fixed with the hook-and-loop fasteners, so the air tends to pass through the gaps rather than through the filter body. This causes a problem in that the filtering performance of the filter body cannot be fully utilized.

[0007] The present invention has been made to solve the above-mentioned problems, and has an object to provide a filter structure and an air purifier intake structure that allow air to pass through the filter body and make use of the filtering performance of the filter body. DISCLOSURE OF THEINVENTION

[0008] In order to achieve the above object, a filter structure according to a first aspect of the present invention is a filter structure for attaching to an air intake of an air purifier to filter air passing through the air intake, the filter structure comprising a filter body having flexibility, a size set so as to be able to cover the air intake, and formed in a sheet shape; Located toward the center from the outer periphery on one side inner part A series of and a fixing portion for fixing the filter body to the outer periphery of the intake port, the fixing portion being formed so as to surround the filter body continuously. A series ofThe filter body includes an outer peripheral portion that continuously surrounds the filter body and a lattice portion provided on the inner portion of the filter body, the outer peripheral portion having a second band portion extending along the edge portion and a fourth band portion connected to one end of the second band portion and extending along the edge portion, and the lattice portion has a fifth band portion and a sixth band portion extending parallel to the second band portion and a seventh band portion extending crosswise to the second band portion, the fifth band portion and the sixth band portion. and an eighth band portion, the fifth band portion being formed at a position closer to the second band portion than the sixth band portion, the seventh band portion being formed at a position closer to the fourth band portion than the eighth band portion, the distance between the second band portion and the fifth band portion being set smaller than the distance between the fifth band portion and the sixth band portion, and the distance between the fourth band portion and the seventh band portion being larger than the distance between the seventh band portion and the eighth band portion. the fixing portion is formed by application of an adhesive, and further includes a sign portion on the inner part of the filter body, in which the adhesive is applied in a sign shape indicating when to replace the filter structure, the sign portion being composed of a plurality of sign elements, the plurality of sign elements being formed so as to be scattered in an island shape in the area surrounded by each band-shaped portion of the outer circumferential portion and each band-shaped portion of the lattice portion, a line connecting the plurality of sign elements in one area and a line connecting the plurality of sign elements in another area are in a parallel relationship and are offset so as not to intersect even when extended, and the fixing portion is cut along any of the fifth band-shaped portion, sixth band-shaped portion, seventh band-shaped portion and eighth band-shaped portion depending on the vertical or horizontal size of the rear air intake of the air purifier, to form an adhesive pattern that surrounds the periphery of the rear air intake of the air purifier.

[0009] With this configuration, air passes through the filter body during use. In addition, as use progresses, dust will adhere to the periphery of the sign. Furthermore, the sign element can be prevented from blocking the gaps in the lattice of the rear air intake of the air purifier, and the visibility of the sign element can be increased as use progresses. Furthermore, the positional relationship of the sign element can be shifted for each area portion.

[0010] The filter structure according to a second aspect of the present invention is the filter structure according to the first aspect of the present invention, wherein the air permeability of the filter body is 1500 to 5000 cc / cm 2 This is set to / sec.

[0011] Such a configuration provides an airflow rate that does not excessively impede ventilation of the air purifier.

[0012] A filter structure in a third aspect of the present invention has the configuration of the invention in the first or second aspect, wherein the fixing portion is formed by applying an adhesive and further includes band-shaped portions passing through an inner portion of the filter body and formed in bands at predetermined intervals.

[0013] With this configuration, adhesive force for fixing is generated on the inner part of the filter body.

[0014] A filter structure in a fourth aspect of the present invention has the configuration of any one of the first to third aspects of the present invention, wherein the filter body is subjected to at least one of an antibacterial treatment and an antiviral treatment.

[0015] With this configuration, the occurrence or proliferation of bacteria or viruses can be suppressed.

[0020] The first aspect of this invention 5 The filter structure in this aspect is Any of the first through fourth phases In the configuration of the invention , mark The identification element is sized to fit within a range formed by a square or rectangle with one side measuring 6 to 15 mm and the other side measuring 6 to 15 mm. Rumo That is why.

[0021] With this configuration, the sign element is prevented from interfering with the gaps in the lattice of the rear air intake of the air purifier, and the visibility of the sign element increases as use progresses.

[0022] The first aspect of this invention 6 The filter structure in this aspect is Any of the first through fifth phases In the configuration of the invention in the above, the plurality of sign elements are arranged such that the closest sign elements are shifted from each other either vertically or horizontally.

[0023] With this configuration, dust is more reliably attracted to the periphery of the sign element of the sign portion. A filter structure according to a seventh aspect of the present invention is a filter structure for attaching to an air intake of an air purifier to filter air passing through the air intake, the filter structure comprising: a filter body having flexibility, a size set so as to be able to cover the air intake, and formed in a sheet shape; and a filter body having a dimensional relationship set on one surface of the filter body in accordance with the size of the outer periphery of the air intake, Located toward the center from the outer periphery on one side inner part A series of and a fixing portion for fixing the filter body to the outer periphery of the intake port, the fixing portion being formed so as to surround the filter body continuously. A series ofThe filter body includes an outer peripheral portion that continuously surrounds the filter body and a lattice portion provided on the inner portion of the filter body, the outer peripheral portion having a second band portion extending along the edge portion and a fourth band portion connected to one end of the second band portion and extending along the edge portion, the lattice portion having a fifth band portion and a sixth band portion extending parallel to the second band portion, and a seventh band portion and an eighth band portion extending so as to intersect with the second band portion, the fifth band portion and the sixth band portion, the strip portion is formed at a position closer to the second strip portion than to the sixth strip portion, the seventh strip portion is formed at a position closer to the fourth strip portion than to the eighth strip portion, the distance between the second strip portion and the fifth strip portion is set smaller than the distance between the fifth strip portion and the sixth strip portion, the distance between the fourth strip portion and the seventh strip portion is set larger than the distance between the seventh strip portion and the eighth strip portion, the fixing portion is formed by applying an adhesive, and further The filter body includes an inner marker section having an adhesive applied in a marker shape indicating when to replace the filter structure, the marker section being composed of a plurality of marker elements, the plurality of marker elements being formed so as to be scattered in an island shape in an area surrounded by each of the bands in the outer circumferential section and each of the bands in the lattice section, the marker elements being sized to fit within an area formed by a square or rectangle having one side of 6 to 15 mm and the other side of 6 to 15 mm, the plurality of marker elements being arranged such that adjacent marker elements are offset from each other either up, down, left, or right, the filter body being set to a size of 35 to 45 cm in length and 19 to 38 cm in width, and the fixing section being an adhesive pattern that is cut along any of the fifth, sixth, seventh, or eighth bands depending on the vertical or horizontal size of the rear air intake of the air purifier and surrounds the periphery of the rear air intake of the air purifier. With this configuration, air passes through the filter body during use. As use progresses, dust adheres to the periphery of the sign. Furthermore, the sign element can be prevented from blocking the gaps in the lattice of the rear air intake of the air purifier, and the visibility of the sign element can be improved as use progresses. Furthermore, the positional relationship of the sign element can be shifted for each area.

[0024] The air intake structure for an air purifier according to an eighth aspect of the present invention is an air intake structure for an air purifier, comprising: a rear air intake port provided on a rear surface of the air purifier and set to a size of 33 to 55 cm in length and 19 to 38 cm in width; and a filter member according to any one of the first to third aspects, which is attached to an outer periphery of the rear air intake port in a position aligned therewith. 6 and a filter structure according to any one of the above aspects.

[0025] With this configuration, an intake structure for an air purifier is obtained in which air passes through the filter body during use.

[0028] As described above, in the filter structure according to the first aspect of the present invention, air passes through the filter body during use, and therefore the function of the filter body can be effectively utilized. In addition, as use progresses, dust accumulates around the sign portion, causing the sign portion to float up due to the dust, thereby indicating the time to replace the filter structure. Furthermore, the sign element can be prevented from blocking the gaps in the lattice of the rear air intake of the air purifier, and the visibility of the sign element increases as use progresses, so the sign element functions more reliably as a sign indicating the time to replace the filter structure. Furthermore, the positional relationship of the sign element can be shifted for each area portion, so it is possible to prevent all of the sign elements from failing to float up properly.

[0029] The filter structure in the second aspect of the present invention, in addition to the effects of the invention in the first aspect, provides an airflow volume that does not excessively impede the ventilation of the air purifier, thereby preventing interference with the operation of the air purifier.

[0030] The filter structure according to the third aspect of the present invention, in addition to the effects of the invention according to the first or second aspect, generates an adhesive force for fixing on the inner part of the filter body, thereby making it possible to more securely attach the filter structure to an air purifier.

[0031] The filter structure according to the fourth aspect of the present invention has the effect of suppressing the occurrence or proliferation of bacteria or viruses, in addition to the effect of any one of the first to third aspects of the present invention, and is therefore advantageous in terms of hygiene.

[0034] The first aspect of this invention 5 The filter structure in this aspect is Any of the first through fourth phasesIn addition to the effects of the invention described above, the indicator element can be prevented from interfering with the gaps in the lattice of the rear air intake of the air purifier, and the visibility of the indicator element increases as use progresses, so that the indicator element more reliably functions as an indicator indicating when it is time to replace the filter structure.

[0035] The filter structure in the sixth aspect of the present invention, in addition to the effect of the invention in any of the first to fifth aspects, more reliably attracts dust around the sign element of the sign part, thereby making it possible to prevent the sign element of the sign part from failing to float up properly. In the filter structure according to the seventh aspect of the present invention, air passes through the filter body during use, so that the function of the filter body can be effectively utilized. As use progresses, dust adheres around the sign portion, causing the sign portion to rise due to the dust and indicating the time to replace the filter structure. Furthermore, since the sign element can be prevented from blocking the gaps in the lattice of the rear air intake of the air purifier, and the visibility of the sign element increases as use progresses, the sign element functions more reliably as a sign indicating the time to replace the filter structure. 。

[0036] The first aspect of this invention 8 The intake structure of the air purifier in this aspect is the same as that in the first aspect to the third aspect. 7 In addition to the effects of the invention in any one of the above aspects, an air intake structure for an air purifier is obtained in which air passes through the filter body during use, making it possible to effectively utilize the function of the filter body while preventing the inside of the air purifier from becoming dirty with dust. [Brief description of the drawings]

[0038] [Figure 1] 1 is a plan view showing the external shape of a filter structure for an air purifier according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is an end view of line II-II shown in FIG. [Diagram 3] FIG. 3 is an enlarged view of the X1 portion shown in FIG. [Figure 4] 1A and 1B are diagrams showing the external appearance of an air purifier, in which FIG. 1A shows the external shape of the front side of the air purifier, and FIG. 1B shows the external shape of the rear side of the air purifier. [Diagram 5] 11A to 11C are diagrams showing a mounting process for mounting the filter structure to an air purifier. [Figure 6] FIG. 11 is a plan view showing the external shape of an air intake structure of an air purifier according to a second embodiment of the present invention, and corresponds to FIG. [Figure 7] FIG. 7 is a plan view showing the external shape of an air intake structure of an air purifier according to a third embodiment of the present invention, corresponding to FIG. 6. [Figure 8] FIG. 7 is a plan view showing the external shape of a filter structure according to a fourth embodiment of the present invention, corresponding to FIG. 6. [Figure 9] FIG. 10 is a plan view showing the external shape of a filter structure according to a fifth embodiment of the present invention, corresponding to FIG. 7. [Figure 10] FIG. 13 is a plan view showing the external shape of a filter structure according to a sixth embodiment of the present invention, corresponding to FIG. 6. [Figure 11] 1A to 1C are diagrams showing a mounting process for mounting the filter structure to an air conditioner. [Figure 12] 11A to 11C are diagrams showing a mounting process for mounting the filter structure to an air purifier. [Figure 13] 13 is a diagram showing a step following the mounting step shown in FIG. 12. [Figure 14] FIG. 13 is a plan view showing the external shape of a filter structure according to a seventh embodiment of the present invention, corresponding to S31 in FIG. [Figure 15] 13 is a plan view showing the external shape of a filter structure according to an eighth embodiment of the present invention, corresponding to FIG. 1. [Figure 16] FIG. 16 is a bottom view of the filter structure shown in FIG. 15. [Figure 17] FIG. 17 is a plan view showing the external shape of a filter structure according to a ninth embodiment of the present invention, corresponding to FIG. 15. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] FIG. 1 is a plan view showing the external shape of an air purifier filter structure according to a first embodiment of the present invention, FIG. 2 is an end view of line II-II shown in FIG. 1, and FIG. 3 is an enlarged view of portion X1 shown in FIG. 2.

[0040] With reference to these figures, the filter structure 1 is for use in an air purifier and is attached to the air intake of the air purifier to filter air passing through the air intake, and comprises a filter body 10 and a fixing part 20.

[0041] The filter body 10 is flexible, has a size that allows it to cover the air inlet, and is made of nonwoven fabric or the like formed into a sheet shape.

[0042] The filter body 10 is formed in a substantially rectangular shape in plan view, with the long side length W11 of the substantially rectangular shape being set to approximately 38.5 cm, and the short side length W12 being set to approximately 25 cm. The filter body 10 is also antiviral treated by adding an inorganic photocatalytic agent, which is advantageous from the standpoint of hygiene as it can suppress the generation of viruses. The airflow rate of the filter body 10 is 1500 to 5000 cc / cm. 2 / sec. Since the ventilation rate is set at this rate, the ventilation of the air purifier is not excessively hindered, and it is possible to avoid problems with the operation of the air purifier. For example, it is possible to avoid the occurrence of a clogging error in the air purifier during use.

[0043] The fixing portion 20 is set to a dimensional relationship corresponding to the size of the outer periphery of the air inlet on one surface of the filter body 10, and is formed so as to substantially continuously surround the inner portion of the filter body 10.

[0044] The fixing portion 20 is formed by applying an adhesive (such as a urethane adhesive) in a substantially square-shaped band along an edge of the substantially rectangular shape of the filter body 10 on one side of the filter body 10. The fixing portion 20 can fix the filter body 10 to the outer periphery of the air intake of the air purifier by means of the applied adhesive. The width W21 of the band of the fixing portion 20 is set to 1.0 cm.

[0045] The effects of configuring the filter structure 1 as described above will be described later.

[0046] Next, a case where the filter structure 1 is attached to an air purifier will be described.

[0047] FIG. 4 is a diagram showing the appearance of the air purifier, where (a) shows the exterior shape of the front side of the air purifier and (b) shows the exterior shape of the rear side of the air purifier, and FIG. 5 is a diagram showing the installation process for installing the filter structure in the air purifier.

[0048] 4(a) and 4(b), the air purifier 60 includes a rear section 61 having a height H61 of 64 cm and a width W61 of 24 cm, and a rear air intake section 62 provided on the rear section 61 and having a height H62 of 37 cm and a width W62 of 24 cm (=W61). The rear air intake section 62 is configured with openings of a substantially rectangular shape aligned vertically and horizontally.

[0049] Next, referring to FIG. 5, as shown in S1, the adhesive portion 20 side is faced to the rear air intake portion 62, and the filter body 10 is aligned and attached to the outer periphery 63 located outside the rear air intake portion 62 in the direction of the arrow, and the attachment is then completed as shown in S2, and the air intake structure 70 of the air purifier is completed.

[0050] With such an air intake structure 70, when the air purifier is in use, air passes through the filter body 10 and flows into the air intake port of the air purifier, so that the filtering function and anti-viral function of the filter body 10 can be effectively utilized.

[0051] FIG. 6 is a plan view showing the external shape of an air intake structure of an air purifier according to a second embodiment of the present invention, and corresponds to FIG.

[0052] In addition, since the second embodiment is basically the same as the first embodiment, the following description will focus on the differences.

[0053] 1, fixing portion 20 of filter structure 1 according to the second embodiment further comprises a band-like portion 31, a marking portion 32, and a contour portion 33 in addition to the components of the first embodiment.

[0054] The belt-shaped portion 31 passes through the inner portion of the filter body 10 so as to intersect with the short side of the substantially rectangular shape at an angle of θ=45°, and is formed at a predetermined interval W31=6.0 cm in the long side direction. The width W32 of the belt-shaped portion 31 is set to 0.8 cm.

[0055] The sign portion 32 is arranged so as to overlap at least a portion of the belt-shaped portion 31, and is in the form of a sign indicating when it is time to replace the filter structure 1, i.e., the inverted letters "Torikaete ne (Japanese)" are applied with adhesive.

[0056] The outline portion 33 is provided around the periphery of the label portion 32 and is a portion to which no adhesive is applied.

[0057] With this configuration, an adhesive force for fixing occurs on the inner portion of the filter body 10, so that the filter body can be more securely attached to the air purifier.

[0058] FIG. 7 is a plan view showing the external shape of an air intake structure of an air purifier according to a third embodiment of the present invention, and corresponds to FIG.

[0059] In addition, since the second embodiment is basically the same as the second embodiment, the following description will focus on the differences.

[0060] 10, in fixing portion 20 of filter structure 1 according to the third embodiment, strip portion 31 in the second embodiment is replaced with strip portion .

[0061] The belt-shaped portion 35 intersects with the short sides of the substantially rectangular shape at angles θ=approximately 45° and γ=approximately 135°. In other words, the belt-shaped portion 35 has an X-shaped lattice shape. Therefore, the adhesive strength can be further reinforced compared to the second embodiment.

[0062] FIG. 8 is a plan view showing the external shape of a filter structure according to a fourth embodiment of the present invention, and corresponds to FIG.

[0063] In addition, since the second embodiment is basically the same as the second embodiment, the following description will focus on the differences.

[0064] 1, in the fourth embodiment, strip portion 31 in the second embodiment is replaced with strip portion .

[0065] The belt-like portion 36 is configured such that belts extending through the inner portion of the filter body 10 are formed at predetermined intervals in the long side direction so as to be approximately perpendicular to the short side of the approximately rectangular shape. In other words, the belt-like portion 36 has an I-shaped rigid lattice shape.

[0066] Even with such a configuration, an adhesive force for fixing occurs at the inner portion of the filter body 10, so that the attachment to the air purifier is more secure.

[0067] FIG. 9 is a plan view showing the external shape of a filter structure according to a fifth embodiment of the present invention, and corresponds to FIG.

[0068] In addition, since the second embodiment is basically the same as the third embodiment, the following description will focus on the differences.

[0069] 10, in the fifth embodiment, the fixed portion 20 has a configuration in which the substantially square-shaped band-like portion on the periphery is removed from the fixed portion 20 in the third embodiment. That is, the fixed portion 20 includes a band-like portion 37 having an X-shaped lattice shape that intersects with the short sides of the substantially rectangular shape at angles θ=approximately 45° and γ=approximately 135°.

[0070] The outer periphery of the belt-shaped portion 37, i.e., the portion extending along the fold line L, is formed so as to continuously surround the inner part of the filter body. Moreover, the size of the outer periphery of the belt-shaped portion 37 (i.e., the size of the closed fold line L) is set to be slightly larger than the outer periphery shape P of the intake port of the air purifier to which it is to be attached.

[0071] Thus, the fixing part 20 is not limited to a square shape, and any shape can be adopted as long as the dimensions are set according to the size of the outer periphery of the air intake port and the shape substantially continuously surrounds the inner part of the filter body 10. With such a configuration, air passes through the filter body during use.

[0072] FIG. 10 is a plan view showing the external shape of a filter structure according to a sixth embodiment of the present invention, and corresponds to FIG.

[0073] In addition, since the second embodiment is basically the same as the second embodiment, the following description will focus on the differences.

[0074] Referring to the same figure, in this sixth embodiment, the filter structure 2 is intended to be attached to an object, either in whole or in part, to filter the air passing through, and is used not only for air purifiers but also for air conditioners.

[0075] Specifically, the filter structure 2 is configured to include a flexible filter body 15 having a sheet-like shape that is approximately rectangular in a plan view and is sized to cover the air intake of an air conditioner, and a fixing portion 22 provided on one side of the filter body 15 for fixing the filter body 15 to an object.

[0076] The size of the filter body 15 is set such that the length W41 of the long side of the substantially rectangular shape is approximately 80 cm, and the length W42 of the short side is approximately 38 cm.

[0077] The fixing portion 22 is formed by applying an adhesive, and like the fixing portion 20 of the second embodiment, includes a strip portion 31, a label portion 32, and a contour portion 33, and further includes nine strip portions as described below.

[0078] The first band-shaped portion 41 extends along one edge portion 11 of the substantially rectangular shape.

[0079] The second band-shaped portion 42 extends along the edge portion 12 of the opposing side that faces one side of the substantially rectangular shape.

[0080] The third band-shaped portion 43 extends along the edge portion 13 of the connecting side that connects one side of the substantially rectangular shape to the opposing side.

[0081] The fourth band-shaped portion 44 extends parallel to the third band-shaped portion 43 and is spaced apart from the third band-shaped portion 43 by a predetermined width.

[0082] The fifth band-like portion 45 extends along the edge 14 of the side opposite the above-mentioned connecting side.

[0083] The sixth belt-shaped portion 46 is formed so as to extend along the imaginary line M connecting the centers of a pair of short sides of the substantially rectangular shape of the filter body 15 on the first belt-shaped portion 41 side of the imaginary line M.

[0084] The seventh band-shaped portion 47 is formed to extend along the imaginary line M on the second band-shaped portion 42 side of the imaginary line M.

[0085] The eighth band-shaped portion 48 is formed to be spaced apart from the sixth band-shaped portion 46 on the first band-shaped portion 41 side.

[0086] The ninth band-like portion 49 is formed to be spaced apart from the seventh band-like portion 47 on the second band-like portion 42 side.

[0087] Furthermore, in the fixing portion 22, the size of the U-shaped shape consisting of a portion 41a of the first band portion, a portion 42a of the second band portion, a third band portion 43 and a fourth band portion 44 (i.e., the size of the closed folded line L) is set to a dimensional relationship corresponding to the size of the outer periphery of the air intake of the air purifier.

[0088] When configured in this manner, the filter structure 2 is for use in an air conditioner when the filter body 15 is not cut, and is for use in an air purifier when the filter body 15 is cut along the outer side of the U-shaped portion of the fourth belt-shaped portion 44 (i.e., along straight line C).

[0089] The installation of the filter structure 2 in an air conditioner and an air purifier will be described below in turn.

[0090] FIG. 11 is a diagram showing a mounting process for mounting the filter structure to an air conditioner.

[0091] Referring to the same figure, as shown in S21, filter structure 2 is folded in a mountain fold along virtual line M (see FIG. 10), and the fixing portion 22 side of filter body 15 is placed facing front air intake 51 of air conditioner 50, and filter structure 2 is attached to front air intake 51 in the direction of the arrow.

[0092] Next, as shown in S22, the filter structure 2 is attached in the direction of the arrow so as to cover the upper surface air inlet 52, and the attachment is completed as shown in S23.

[0093] As described with reference to Fig. 10, the filter body 15 of the filter structure 2 has a substantially rectangular shape with a long side length W41 set to about 80 cm and a short side length W42 set to about 38 cm, which fits well with the size of the air intake of commonly used home air conditioners. Therefore, a filter structure 2 having high versatility for use among air conditioners of different manufacturers and models can be obtained.

[0094] In addition, the sixth belt-like portion 46 to the ninth belt-like portion 49 can generate adhesive strength near the center, making it possible to more securely fix the filter body to the object when it is folded near the center, such as during the installation process of an air conditioner.

[0095] Next, a case where the filter structure 2 is attached to an air purifier will be described.

[0096] FIG. 12 is a diagram showing a mounting step for mounting the filter structure to an air purifier, and FIG. 13 is a diagram showing a step subsequent to the mounting step shown in FIG.

[0097] First, referring to FIG. 12, as shown in S31, the long side of filter body 15 is cut along straight line C to prepare cut filter body 16.

[0098] Next, as shown in S32, fixing portion 22 is faced to rear air intake portion 62, and cut filter body 16 is aligned and attached to outer periphery 63 of rear air intake portion 62 in the direction of the arrow, and attachment is then completed as shown in S33 of Figure 13, and air intake structure 70 of the air purifier is completed.

[0099] The filter structure 2 is attached to the rear air intake portion 62 of the air purifier so that the long side direction of the filter body 15 before cutting coincides with the horizontal direction. In the filter body 16, the size of the square shape included in the fixing part (i.e., the size of the closed fold line L) is set to a dimensional relationship such that the rear air intake portion 62 can be accommodated (a dimensional relationship such that the closed fold line L corresponds to the outer periphery 63).

[0100] As described above, the filter structure 2 can be easily attached to either an air conditioner or an air purifier depending on the cut, and can more reliably prevent the intrusion of dust.

[0101] FIG. 14 is a plan view showing the external shape of a filter structure according to the seventh embodiment of the present invention, and corresponds to S31 in FIG.

[0102] In addition, since the explanation is basically the same as that of the sixth embodiment, the differences will be mainly explained.

[0103] 10, in the seventh embodiment, the attachment direction of filter structure 2 is different from that in the sixth embodiment.

[0104] The filter structure 2 is attached to an air intake (not shown) of an air purifier so that the long side direction of the uncut filter body 15 coincides with the up-down direction. In the filter body 16, the size of the square shape included in the fixing part (i.e., the size of the closed folded line L) is set to a dimensional relationship according to the outer circumferential shape P of the air intake of the air purifier.

[0105] The filter structure 2 may be attached in such an orientation depending on the size of the air intake of the air purifier, etc.

[0106] In the above embodiments, the filter structure has been described to have specific dimensions, but the present invention is not limited to these. For example, the lengths of the long and short sides of the substantially rectangular filter body may be interchanged.

[0107] In addition, in each of the above embodiments, the filter body has a specific basis weight and air permeability, but the present invention is not limited to this.

[0108] Furthermore, in each of the above embodiments, the fixing part has been described as having a specific shape, but is not limited thereto. The fixing part is not particularly limited as long as it is set to a dimensional relationship according to the size of the outer circumference of the air intake of the air purifier on one side of the filter body and includes a part formed to substantially continuously surround the inner part of the filter body. In addition, as long as it is possible to prevent direct air from entering the air intake of the air purifier, the shape does not have to completely continuously surround the inner part of the filter body.

[0109] Furthermore, in each of the above-described embodiments, the fixing portion for fixing the filter body to the air purifier is formed by applying an adhesive, but this is not limited thereto. The fixing portion may be formed of a hook-and-loop fastener or a double-sided tape.

[0110] Furthermore, in each of the above embodiments, the filter structure is mainly attached to the rear air intake of the air purifier, but it may be attached to other air intakes in addition to the rear air intake.

[0111] Furthermore, in the above second embodiment and the like, the fixing portion is provided with a mark portion and a contour portion. However, the mark portion and the contour portion may be omitted.

[0112] Furthermore, in each of the above embodiments, the filter body is described as being antiviral-treated, but this is not limited thereto. The filter body may be treated with at least one of antibacterial and antiviral treatments. Furthermore, these treatments may be inorganic chemicals such as photocatalysts as described above, organic chemicals, or a combination of these, and are not particularly limited. Furthermore, for example, titanium oxide particles constituting the photocatalyst may be used that support copper. This can suppress the occurrence or proliferation of bacteria or viruses.

[0113] Furthermore, although not specifically described in the above embodiments, the size of the rear air intake of the air purifier is often a combination of width (W62) 24, 25, 26, 30, 33 cm and height (H62) 38, 40 cm, and is generally set to a size of 33 to 45 cm in height and 19 to 38 cm in width. In other words, the filter body only needs to be set to a size that can cover such a rear air intake, for example, a size of 35 to 45 cm in height and 19 to 38 cm in width.

[0114] Furthermore, in the sixth and seventh embodiments described above, the size of the filter body is set so that the long side length W11 is approximately 80 cm and the short side length W12 is approximately 38 cm so that it can be easily attached to both air conditioners and air purifiers by cutting it according to the object, but this is not limited to this.

[0115] Furthermore, although not specifically described in the above embodiments, from the standpoint of adhesive adhesion, the rear surface and rear air intake of the air purifier are preferably made of a material made of a synthetic resin such as polystyrene (PS), high impact polystyrene (HIPS), or acrylonitrile-butadiene-styrene copolymer (ABS).

[0116] Furthermore, in the above first embodiment, the adhesive portion is made of a urethane adhesive, but the adhesive portion is not limited to this and may be made of an acrylic adhesive, a silicone adhesive, or the like.

[0117] Furthermore, although not specifically described in the above embodiments, the ratio of the area of ​​the fixing portion to the area of ​​the filter body may be about 40%, and the ratio is preferably 60% or less, and more preferably 55% or less.

[0118] FIG. 15 is a plan view showing the external shape of a filter structure according to an eighth embodiment of the present invention and corresponds to FIG. 1, and FIG. 16 is a bottom view of the filter structure shown in FIG.

[0119] In the following description, the differences from the first embodiment will be mainly explained.

[0120] With reference to these figures, in this eighth embodiment, filter structure 80 can be cut according to the size of the air intake of an air purifier. Specifically, fixing part 20 includes an outer circumferential part that substantially continuously surrounds the inner part of filter body 10, and an inner region of the outer circumferential part, i.e., a lattice part provided in the inner part of filter body 10.

[0121] The outer peripheral portion is composed of a first band-shaped portion 41 extending along the edge 11 of one side of the approximately rectangular shape, a second band-shaped portion 42 extending along the edge 12 of the opposing side opposite to one side of the approximately rectangular shape, a third band-shaped portion 43 extending along the edge 13 of the connecting side connecting the one side of the approximately rectangular shape and the opposing side, and a fourth band-shaped portion 81 extending along the edge 14 of the side opposite the above-mentioned connecting side.

[0122] The lattice portion is composed of a fifth band portion 82 and a sixth band portion 83 extending parallel to the first band portion 41 and the second band portion 42, and a seventh band portion 84 and an eighth band portion 85 extending approximately perpendicular to the first band portion 41, the second band portion 42, the fifth band portion 82, and the sixth band portion 83.

[0123] That is, the seventh band portion 84 and the eighth band portion 85 extend parallel to the third band portion 43 and are spaced a predetermined width from the third band portion 43. The fourth band portion 81 is positioned opposite the third band portion 43.

[0124] The size of the filter structure 80 is set as follows:

[0125] Width (H90) of the third belt portion 43, the fourth belt portion 81, the seventh belt portion 84, and the eighth belt portion 85: 10.0 mm Length of the long side of the filter body 10 (H80): 560.0mm Length from the outer end of the fourth belt-like portion 81 to the outer end of the third belt-like portion 43 (H81): 550.0 mm Length from the outer end of the seventh belt-like portion 84 to the outer end of the third belt-like portion 43 (H82): 440.0 mm Length from the outer end of the eighth belt portion 85 to the outer end of the third belt portion 43 (H83): 380.0 mm Length from the inner end of the fourth belt-like portion 81 to the inner end of the third belt-like portion 43 (H84): 530.0 mm Length from the inner end of the seventh belt-like portion 84 to the inner end of the third belt-like portion 43 (H85): 420.0 mm Length from the inner end of the eighth belt portion 85 to the inner end of the third belt portion 43 (H86): 360.0 mm Width (W90) of the first belt portion 41, the second belt portion 42, the fifth belt portion 82, and the sixth belt portion 83: 10.0 mm Length of short side of filter body 10 (W80): 380.0mm Length from the outer end of the first belt-like portion 41 to the outer end of the second belt-like portion 42 (W81): 370.0 mm Length from the outer end of the first belt-like portion 41 to the outer end of the fifth belt-like portion 82 (W82): 350.0 mm Length from the outer end of the first belt-like portion 41 to the outer end of the sixth belt-like portion 83 (W83): 270.0 mm Length from the inner end of the first belt-like portion 41 to the inner end of the second belt-like portion 42 (W84): 350.0 mm Length from the inner end of the first belt-like portion 41 to the inner end of the fifth belt-like portion 82 (W85): 330.0 mm Length from the inner end of the first belt-like portion 41 to the inner end of the sixth belt-like portion 83 (W86): 250.0 mm The effect of setting it in this way will be explained as follows.

[0126] First of all, the sizes of the rear air intakes on air purifiers can be broadly divided into three types: 250mm x 360mm, 330mm x 420mm, and 350mm x 530mm.

[0127] When attempting to use adhesive to bond the outer periphery of the rear air intakes of these three sizes, if the width of the adhesive is 10.0 mm, the outer size of the fixing part 20 (the outer size of the outer periphery) should be set to 270 mm x 380 mm, 350 mm x 440 mm, and 370 mm x 550 mm, and the above-mentioned sizes H81 to H86 and W81 to W86 are set to suit this.

[0128] In addition, when manufacturing the filter structure 80, the original roll is cut out, but it is not cut at the points where the adhesive is applied, so the overall size of the filter body 10 is 380 mm (W80) x 560 mm (H80), with ears measuring 5 mm on each side.

[0129] When attaching to the rear air intake of the air purifier, the filter structure 80 is cut along the strip portions (82, 83, 84, 85) of the lattice portion according to the vertical or horizontal size of the rear air intake of the air purifier as described above, thereby obtaining an adhesive pattern that surrounds the periphery of the rear air intake of the air purifier.

[0130] FIG. 17 is a plan view showing the external shape of a filter structure according to a ninth embodiment of the present invention, and corresponds to FIG.

[0131] In addition, since the explanation is basically the same as that of the eighth embodiment, the differences will be mainly explained.

[0132] 11, in the ninth embodiment, the fixing portion 20 in the eighth embodiment further includes, in the lattice portion, a ninth band portion 91 and a tenth band portion 92 extending parallel to the first band portion 41 etc., and an eleventh band portion 93 and a twelfth band portion 94 extending approximately perpendicular to the first band portion 41 etc. Furthermore, the fixing portion 20 includes a mark portion 95 provided in each area surrounded by the band portions (41, 42, 43, 81) of the outer periphery and the band portions (82, 83, 84, 85, 91, 92, 93, 94) of the lattice portion.

[0133] The ninth band portion 91 and the tenth band portion 92 are each arranged so as to be linearly symmetrical with the fifth band portion 82 and the sixth band portion 83 with respect to a center line connecting the centers of a pair of short sides of the approximately rectangular shape of the filter body 10.

[0134] The eleventh band portion 93 and the twelfth band portion 94 are each arranged so as to be linearly symmetrical with the seventh band portion 84 and the eighth band portion 85 with respect to a center line connecting the centers of a pair of long sides of the approximately rectangular shape of the filter body 10.

[0135] The sign portion 95 is composed of multiple heart shapes, and as use progresses, dust adheres to the periphery of the heart shapes of the sign portion 95, causing the heart shapes of the sign portion 95 to stand out, indicating the time to replace the filter structure 80. There is no particular limit to the size of the heart shapes, but it is preferable to set them to 13 mm x 13 mm.

[0136] The effect of setting the size of the heart shape in this way will be described below.

[0137] First, the rear air intake of an air purifier is often formed in a lattice pattern with multiple openings, each of which is roughly a right-angled rectangle, aligned vertically and horizontally, and the size of the lattice pattern is sometimes set to 15 mm x 15 mm.

[0138] In the case of such a grid size of 15 mm x 15 mm, it is preferable to set the size of the heart shape of the sign portion 95 to 15 mm x 15 mm or less so as not to block the gaps between the grids. On the other hand, in consideration of the visibility when the heart shape rises with the progress of use, it is preferable that the size of the heart shape is larger than 7 mm x 6 mm or 6 mm x 7 mm. From the above, it is preferable to set the size of the heart shape to 7 mm x 6 mm or 6 mm x 7 mm, or 7 mm x 7 mm to 15 mm x 15 mm.

[0139] Also, each heart shape included in the sign portion 95 is arranged in a staggered manner within each region so as not to overlap with the band-shaped portions (41, 42, 43, 81, 82, 83, 84, 85, 91, 92, 93, 94). For example, the heart shape within a certain region B81 is arranged on a 45° diagonal line L81, and the heart shape within another region B82 is arranged on a 45° diagonal line L82, but the lines L81 and L82 are in a parallel relationship and are offset so as not to intersect even when extended.

[0140] Here, when attaching the filter structure 80 to the rear air intake of the air purifier, the heart shape may not rise properly even after further use, depending on the positional relationship between the rear air intake of the air purifier and the lattice. By arranging as described above, the positional relationship between the heart shape and the lattice of the rear air intake of the air purifier can be shifted for each area, so that it is possible to prevent all of the heart shapes from failing to rise properly.

[0141] In the eighth and ninth embodiments, the filter structures are described as being composed of a specific number of strips, but the number is not limited. For example, in the eighth embodiment, it is also possible to provide strips similar to those in the ninth embodiment.

[0142] Furthermore, although not specifically explained in each of the above embodiments, the marking portion in the filter structure according to the above 9th embodiment can also be adopted in the filter structures according to the above 8th embodiment and the above 1st to 7th embodiments.

[0143] Furthermore, in the above ninth embodiment, the sign portion is configured with a plurality of heart shapes, but is not limited thereto. The sign portion may be configured with sign elements such as other patterns and letters, as long as the sign portion is coated with an adhesive in a sign shape indicating the time to replace the filter structure. The sign element may be sized to fit within a range formed by a square or rectangle with one side of 6 to 15 mm and the other side of 6 to 15 mm. By configuring in this way, the sign element can be prevented from blocking the gaps in the lattice of the rear air intake of the air purifier, and the visibility of the sign element is improved as use progresses. This allows the sign element to function more reliably as a sign indicating the time to replace the filter structure.

[0144] Furthermore, in the ninth embodiment, the multiple heart shapes are arranged in a staggered pattern in each region, but this is not limited to this. The multiple heart shapes can be arranged to be spaced apart from each other. In other words, the multiple heart shapes may be formed in the region so as to be scattered like islands.

[0145] Furthermore, in the above ninth embodiment, the multiple heart shapes are arranged on a specific line, but this is not limited to this. The multiple heart shapes may be arranged such that the closest heart shapes are offset from each other either up, down, left, or right. This allows dust to adhere more reliably to the periphery of the sign element of the sign part, thereby preventing the sign element of the sign part from being unable to be lifted up properly.

[0146] Furthermore, although not specifically described in the eighth and ninth embodiments above, the filter structure may be formed to a size for an air conditioner, as described in the sixth embodiment above, and then cut to a specified size. EXAMPLES

[0147] The present invention will be described in detail below with reference to examples, although the present invention is not limited to these examples. I. Configuration of the filter structure used in the test As examples, seven types of filter structures (i.e., according to the first embodiment) were prepared in which a fixing portion with an adhesive pattern as shown in FIG. 1 etc. was formed on a filter body made of nonwoven fabric as described above, and which differed in basis weight and air permeability.

[0148] In Examples 1 to 7, the air permeability of the filter body measured based on JIS L 1096 A method (Fragile method) is 1500 to 5000 cc / cm 2 / sec range.

[0149] In addition, a filter body made of nonwoven fabric was prepared as Comparative Example 1, which did not have a fixing part as in Examples 1 to 7. The basis weight and air permeability of Comparative Example 1 were 40 g / m, the same as in Example 2. 2 and 4654cc / cm 2 It is set to / sec.

[0150] Furthermore, as Comparative Example 2, a case in which no filter was provided at the rear air intake of the air purifier was also examined.

[0151] The sizes of the respective components in Examples 1 to 7 and Comparative Example 1 are as follows.

[0152] Vertical length: approx. 38cm Width: approx. 26cm II. Study Details and Results As described above, the seven types of filter structures of Examples 1 to 7 were used and tests were carried out by attaching each of them to a target model of air purifier via a fixing part coated with an adhesive, as shown below.

[0153] For Comparative Example 1, hook-and-loop fasteners were attached to the four corners of the outer periphery of the rear air intake of the air purifier, and the device was attached to the rear air intake of the air purifier via the hook-and-loop fasteners, and the following test was performed.

[0154] For Comparative Example 2, the following test was carried out without attaching a filter to the rear air intake of the air purifier. 1. Applicable air purifier models Manufactured by Sharp Corporation Product number: KI-FX55-W External dimensions (mm): Width 392 x Depth 265 x Height 635 Rear intake dimensions (mm): Width 227 x Height 345 2. Test Contents (1) Check the condition of the internal filter of the air purifier For Examples 1 to 7 and Comparative Example 1, a filter structure was attached to the rear air intake of the air purifier so as to completely cover the rear air intake, and then the air purifier was started and operated 24 hours a day for two weeks in automatic operation mode. After that, the internal filter (HEPA filter, etc.) of the air purifier was visually inspected for dirt.

[0155] In addition, for Comparative Example 2, the air purifier was started without a filter, set to automatic operation mode, and operated 24 hours a day for two weeks, after which the internal filter (HEPA filter, etc.) of the air purifier was visually inspected for dirt.

[0156] The results are shown in Table 1 below.

[0157] [Table 1] Referring to Table 1, the "dust condition around the internal filter frame of the air purifier" was evaluated on a three-point scale: "small," where there was not much dust around the internal filter frame of the air purifier; "large," where there was a considerable amount of dust; and "medium," where the dust condition was somewhere between "small" and "large."

[0158] As a result, in Examples 1 to 7, the score was "small." In Comparative Example 1, the score was "medium." Furthermore, in Comparative Example 2, the score was "large."

[0159] In Comparative Example 2 where no filter was attached, dust and dirt accumulated relatively. In Comparative Example 1, dirt was reduced compared to Comparative Example 2 where no filter was attached, but it is presumed that dust penetrates into the internal filter side of the air purifier from the unfixed parts when the four corners of the filter body are simply fixed with hook-and-loop fasteners. In conclusion, it can be said that the dirt prevention performance of Examples 1 to 7, in which the filter structure is attached to the air purifier via the fixing part where adhesive is applied in a square shape, was superior. (2) Air purifier abnormality confirmation test Abnormal noise detection test After the filter structure was attached to the air purifier, operation was started and a sensory test was performed to confirm whether any abnormal noise different from normal operation noise was generated. Cleaning sign confirmation test After installing the filter structure in the air purifier, we checked whether the cleaning sign would light up after starting the operation. In the target model, the cleaning sign would light up if the filter was clogged. If it lights up, it is considered that the breathability of the filter structure is low.

[0160] The results are shown in Table 2 below.

[0161] [Table 2] Referring to Table 2, in the abnormal sound detection test, those in which no abnormal sound was detected are marked with an O, and those in which abnormal sound was detected are marked with an X. In addition, in the cleaning sign confirmation test, those in which the cleaning sign did not light up are marked with an O, and those in which the cleaning sign lighted up are marked with an X.

[0162] This allows for an airflow rate of 1500cc / cm 2 For Examples 1 to 4, in which the ventilation volume is set to 1342cc / cm 3 / sec or more, all were rated as ◯. 2 For Examples 5 to 7 in which the maximum permeability was set to 1 / sec or less, each was rated as ×. [Industrial Applicability]

[0163] INDUSTRIAL APPLICABILITY As described above, the filter structure for an air purifier and the intake structure of an air purifier to which the filter structure is attached according to the present invention are suitable for, for example, being attached to an object to filter the gas passing therethrough.

Claims

1. A filter structure (1, 2) for attaching to an air intake of an air purifier to filter air passing through the air intake, A filter body (10, 15) having flexibility, set to a size capable of covering the air intake port, and formed in a sheet shape; a fixing portion (20, 22) that is set to a dimensional relationship corresponding to a size of an outer periphery of the air intake on one surface of the filter body, and is formed so as to continuously surround an inner portion located toward the center from the outer periphery on the one surface of the filter body, and that fixes the filter body to the outer periphery of the air intake, The fixing portion is The filter body includes an outer circumferential portion that continuously surrounds the inner portion of the filter body, and a lattice portion that is provided in the inner portion of the filter body, The outer circumferential portion is a second band extending along the edge; a fourth band portion connected to one end of the second band portion and extending along the edge portion; the lattice portion includes a fifth band portion and a sixth band portion extending parallel to the second band portion, and a seventh band portion and an eighth band portion extending so as to intersect with the second band portion, the fifth band portion, and the sixth band portion, the fifth band portion is formed at a position closer to the second band portion than the sixth band portion is, the seventh band portion is formed at a position closer to the fourth band portion than the eighth band portion is, a distance between the second band portion and the fifth band portion is set smaller than a distance between the fifth band portion and the sixth band portion, a distance between the fourth band portion and the seventh band portion is set to be larger than a distance between the seventh band portion and the eighth band portion, The fixing portion is formed by applying an adhesive, The filter body further includes a marking portion formed by applying an adhesive to an inner portion of the filter body in a marking shape to indicate when the filter structure should be replaced, The sign portion is composed of a plurality of sign elements, the plurality of sign elements are formed to be scattered in an island shape in an area surrounded by each of the band-shaped portions of the outer circumferential portion and each of the band-shaped portions of the lattice portion, a line connecting the plurality of sign elements in one of the areas and a line connecting the plurality of sign elements in another of the areas are parallel to each other and are offset from each other so as not to intersect even when extended; The filter structure has an adhesive pattern in which the fixing portion is cut along any of the fifth band portion, the sixth band portion, the seventh band portion, or the eighth band portion depending on the vertical or horizontal size of the rear air intake of the air purifier, and surrounds the periphery of the rear air intake of the air purifier.

2. The air permeability of the filter body is 1500 to 5000 cc / cm ２ 2. The filter structure of claim 1, wherein the filter structure is set to 0. / sec.

3. The fixing portion is formed by applying an adhesive, 3. The filter structure according to claim 1, further comprising band-like portions (31, 35, 36, 37) formed in a band shape at predetermined intervals passing through an inner portion of the filter body.

4. The filter structure according to claim 1 , wherein the filter body is subjected to at least one of an antibacterial treatment and an antiviral treatment.

5. 5. A filter structure as described in any one of claims 1 to 4, wherein the marking element is sized to fit within an area defined by a square or rectangle having one side of 6 to 15 mm and the other side of 6 to 15 mm.

6. The filter structure according to claim 1 , wherein the plurality of marking elements are arranged such that adjacent marking elements are offset from each other either vertically or horizontally.

7. A filter structure for attaching to an air intake of an air purifier to filter air passing through the air intake, comprising: A filter body having flexibility, a size set so as to be able to cover the air intake port, and formed in a sheet shape; a fixing portion that is set to a dimensional relationship corresponding to a size of an outer periphery of the air intake on one surface of the filter body, and is formed so as to continuously surround an inner portion located toward the center from the outer periphery on the one surface of the filter body, and that fixes the filter body to the outer periphery of the air intake, The fixing portion is The filter body includes an outer circumferential portion that continuously surrounds the inner portion of the filter body, and a lattice portion that is provided in the inner portion of the filter body, The outer circumferential portion is a second band extending along the edge; a fourth band portion connected to one end of the second band portion and extending along the edge portion; the lattice portion includes a fifth band portion and a sixth band portion extending parallel to the second band portion, and a seventh band portion and an eighth band portion extending so as to intersect with the second band portion, the fifth band portion, and the sixth band portion, the fifth band portion is formed at a position closer to the second band portion than the sixth band portion is, the seventh band portion is formed at a position closer to the fourth band portion than the eighth band portion is, a distance between the second band portion and the fifth band portion is set smaller than a distance between the fifth band portion and the sixth band portion, a distance between the fourth band portion and the seventh band portion is set to be larger than a distance between the seventh band portion and the eighth band portion, The fixing portion is formed by applying an adhesive, The filter body further includes a marking portion formed by applying an adhesive to an inner portion of the filter body in a marking shape to indicate when the filter structure should be replaced, The sign portion is composed of a plurality of sign elements, the plurality of sign elements are formed to be scattered in an island shape in an area surrounded by each of the band-shaped portions of the outer circumferential portion and each of the band-shaped portions of the lattice portion, The sign element is sized to fit within a range formed by a square or rectangle having one side of 6 to 15 mm and the other side of 6 to 15 mm, The plurality of sign elements are provided in such a manner that adjacent sign elements are shifted from each other either vertically or horizontally, The filter body is set to a size of 35 to 45 cm in length and 19 to 38 cm in width, The filter structure has an adhesive pattern in which the fixing portion is cut along any of the fifth band portion, the sixth band portion, the seventh band portion, or the eighth band portion depending on the vertical or horizontal size of the rear air intake of the air purifier, and surrounds the periphery of the rear air intake of the air purifier.

8. An intake structure (70) for an air purifier, A rear air intake port is provided on the rear of the air purifier and has a size of 33 to 55 cm in height and 19 to 38 cm in width; 7. An air intake structure for an air purifier comprising: a filter structure according to claim 1, which is attached in alignment with an outer periphery of the rear air intake port.

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