COMBINED FILTERS, AIR PURIFIERS WITH COMBINED FILTERS, AND METHODS OF MANUFACTURING COMBINED FILTERS

Abstract

The invention proposes a combined filter comprising: a filter element with filter parts for air filtration, a filter element with a filter assembly whose side surfaces are joined together so that the filter parts are capable of rotation relative to each other; at least one filter module arranged in parallel with at least one filter assembly; and a support for the filter parts arranged adjacent to each other between the filter assembly and the filter module so that the adjacent filter parts are capable of rotation relative to each other. The support has: a fold that is selectively folded according to the relative rotation of the adjacent filter parts; and an attachment assembly which is attached to the fold with the fold inserted between it, and which is attached to the side surfaces of the adjacent filter parts. The fold and the attachments are made in one piece and are made of a soft material, and each attachment extends to the side surface of the adjacent filter module to seal the gap between the filter part and the filter module.

Description

Composite filter and air purifier containing the same

[0001] The present invention relates to a composite filter and an air purifier including the same.

[0002] Typically, an air purifier is a device that draws in polluted indoor air, filters it to remove dust, odor particles, and other contaminants, and purifies the air. Air purifiers purify indoor air by drawing in polluted air, purifying it, and then expelling the purified air outside the purifier.

[0003] Meanwhile, an air purifier may include a filter that filters out dust, odor particles, and other contaminants contained in the air flowing into the air purifier. The filter may have various shapes depending on the type of air purifier. For example, the filter may be provided in a cylindrical shape, a rectangular parallelepiped shape, or the like.

[0004] However, filters of the aforementioned shape take up a relatively large volume during transport, which increases transportation costs. Furthermore, demand for large-area filters to purify air in large spaces has recently increased, leading to an increasing volume of filters during transport. Consequently, filters are being developed to reduce their transport volume.

[0005] The applicant's U.S. Patent Publication No. 2018 / 0221805 "Air Purifier" and Blueair AB's U.S. Patent Publication No. 2018 / 0304184 "Foldable Air Filter Unit" disclose foldable filters that can reduce the volume of the filter when transporting it. However, conventional foldable filters require a complex hinge structure for folding, and a complex structure or separate adhesive is used to combine the filter and the support (frame), making the structure and manufacturing process of the foldable filter complex, which increases the manufacturing cost of the foldable filter.

[0006] In addition, in the case of a composite filter that combines a dust collecting filter that filters dust and a functional filter, such as a deodorizing filter, a sealing configuration is required to prevent air from leaking through the gap between the two stacked filters. However, if a hinge structure that is structurally difficult to seal is applied to the composite filter, a separate sealing member must be added, which ultimately complicates the manufacturing process and increases the overall manufacturing cost, which is not desirable.

[0007] Therefore, there is a need for a foldable composite filter that can simplify the manufacturing process and reduce manufacturing costs by having a simple structure.

[0008] (Prior art literature)

[0009] (Patent Document 1) U.S. Patent Publication No. 2018 / 0221805 (Application published on August 9, 2018)

[0010] (Patent Document 2) U.S. Patent Publication No. 2018 / 0304184 (Application published on October 25, 2018)

[0011] Embodiments of the present invention have been invented with the above background in mind, and are intended to provide a foldable composite filter that can secure a wide filtration area to filter a large amount of air while reducing the volume during transportation.

[0012] In addition, we aim to provide a composite filter that can be used for a long time by simplifying the structure of the foldable composite filter and improving the durability of the filter.

[0013] In addition, by simplifying the structure of the filter, it is intended to provide a composite filter that can reduce the time and cost required for manufacturing a foldable composite filter in particular.

[0014] According to one aspect of the present invention, there is provided a composite filter comprising: a filter unit including a filter member having a plurality of filtering portions that filter air and are connected to each other at sides so as to be rotatable relative to each other; one or more filter modules arranged in parallel with at least one of the plurality of filtering portions; and a bracket that supports the filtering portions and the filter modules arranged adjacent to each other so that the filtering portions arranged adjacent to each other among the plurality of filtering portions can rotate relative to each other, wherein the bracket includes a folding portion that is selectively folded according to the relative rotation of the filtering portions arranged adjacent to each other; and a plurality of attachment portions that are respectively connected to the folding portions with the folding portions interposed therebetween and are respectively attached to the sides of the filtering portions arranged adjacent to each other, wherein the folding portions and the attachment portions are provided integrally with each other and formed of a flexible material, and the attachment portions extend to the sides of the filter modules adjacent to each other so as to seal a gap between the filtering portions and the filter modules.

[0015] In addition, a composite filter may be provided in which the plurality of filtering units are three or more filtering units, and each of the plurality of filtering units is rotated relative to each other to form an angle less than a parallel angle with respect to an adjacent filtering unit, and the plurality of filtering units are arranged along a loop-shaped path.

[0016] Additionally, a composite filter may be provided in which the plurality of filtering sections are an even number of filtering sections.

[0017] Additionally, a composite filter may be provided in which the plurality of filtering sections are rotatable relative to each other so that at least two adjacent filtering sections are arranged in parallel.

[0018] In addition, the filter module may be provided with a composite filter including an air purification member for filtering air; and a module frame for supporting an upper or lower side of the air purification member, and a protrusion formed on at least one of both sides of the air purification member.

[0019] In addition, a composite filter may be provided in which the bracket has a concave portion corresponding to at least a portion of the protrusion and an adhesive surface adhered to a side surface of the air purifying member.

[0020] In addition, the filter unit may further include a filter frame having a support member that supports the upper or lower side of the filtering unit, and the composite filter may further include a connecting member attached to the upper or lower side of the support member and the module frame, which are arranged adjacent to each other so that a gap between the support member and the module frame is sealed.

[0021] Additionally, the filter module may be provided with a composite filter including a Colgate filter.

[0022] Additionally, a composite filter may be provided that includes a blower that provides a blowing force to allow outside air to pass through the composite filter.

[0023] In addition, a method for manufacturing a composite filter may be provided, including a laminated material providing step of providing a laminated material in which a filter unit base material and a filter module material are laminated; and a filter module cutting step of cutting the filter module material into a plurality of filter modules by moving a cutter of the filter manufacturing device along an imaginary cutting line extending in the thickness direction of the laminated material; a filter unit cutting step of cutting the filter unit base material to a depth smaller than the thickness of the filter unit base material by moving the cutter between the plurality of filter modules along the cutting line after the filter module cutting step; and a bracket attaching step of attaching the bracket to the side surface of the filter unit and the filter module that are arranged adjacent to each other, wherein the filter unit including the plurality of filter units and the plurality of support units is formed from the filter unit base material through the filter unit cutting step.

[0024] According to embodiments of the present invention, there is an effect of reducing the cost of transporting the filter by reducing the volume of a foldable composite filter in which a dust collection filter and a deodorizing filter are combined, for example.

[0025] Additionally, it has the effect of reducing manufacturing costs by simplifying the structure of the foldable composite filter.

[0026] Fig. 1 is a perspective view showing an air purifier according to a first embodiment of the present invention.

[0027] Figure 2 is a cross-sectional view taken along line II-II of Figure 1.

[0028] Figure 3 is a perspective view of a portion of the composite filter illustrated in Figure 2.

[0029] Figure 4 is a rear perspective view of Figure 3.

[0030] Figure 5 is an exploded perspective view of Figure 3.

[0031] Figure 6 is a perspective view of a composite filter with the connecting member omitted in Figure 2.

[0032] Fig. 7 is a perspective view of the composite filter of Fig. 2.

[0033] Figure 8 is an exploded perspective view of Figure 7.

[0034] Figure 9 is a perspective view of the composite filter of Figure 7 when folded.

[0035] Fig. 10 is a perspective view showing a composite filter according to a second embodiment of the present invention.

[0036] Figure 11 is a conceptual diagram schematically illustrating a process for manufacturing a composite filter according to the present invention.

[0037] Figure 12 is a flowchart schematically illustrating a method for manufacturing a composite filter according to the present invention.

[0038] Hereinafter, specific embodiments for implementing the technical idea of ​​the present invention will be described in detail with reference to the drawings.

[0039] In addition, when explaining the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0040] Additionally, when it is said that a component is 'connected to', 'supported by', or 'inflowed into' another component, it should be understood that it may be directly connected to, supported by, or inflowed into that other component, but there may also be other components in between.

[0041] The terminology used herein is intended solely to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

[0042] Additionally, terms that include ordinal numbers, such as "first," "second," etc., may be used to describe various components, but these components are not limited by such terms. These terms are used solely to distinguish one component from another.

[0043] The term "comprising" as used in the specification means specifying a particular characteristic, region, integer, step, operation, element and / or component, but does not exclude the presence or addition of other particular characteristics, regions, integers, steps, operations, elements, components and / or groups.

[0044] In addition, it should be noted that the expressions for directions such as "upper" and "lower" in this specification are based on the illustrations in the drawings and may be expressed differently if the direction of the object in question changes. Meanwhile, in this specification, the "upper" and "lower" directions may be based on the upper and lower directions of FIGS. 3 to 10.

[0045] Hereinafter, the specific configuration of the air purifier (1) according to the first embodiment of the present invention will be described with reference to the drawings.

[0046] Hereinafter, referring to FIGS. 1 and 2, an air purifier (1) according to a first embodiment of the present invention can purify polluted air into clean air by filtering dust, odor particles, etc. in the air introduced into the air purifier (1). In addition, the air purifier (1) can suck air from outside the air purifier into the inside of the air purifier, and can discharge clean air purified inside to the outside. The air purifier (1) can include a body (10), a blower (20), and a composite filter (30).

[0047] The body (10) can support a blower (20) and a composite filter (30), and can provide a space in which the blower (20) and the composite filter (30) are accommodated. The body (10) can include a case surrounding the blower (20) and the composite filter (30).

[0048] The blower (20) can be driven to introduce air existing outside the air purifier (1) into the interior of the air purifier (1). The blower (20) can provide blowing force so that the introduced air passes through the composite filter (30). In addition, the blower (20) can be driven to send out air purified by the filter (30) arranged inside the air purifier (1) to the exterior. For example, the blower (20) can be arranged on the lower side of the body (10) and can be arranged inside the composite filter (30).

[0049] Referring to FIGS. 3 to 5, the composite filter (30) can filter air drawn in from the outside of the air purifier (1) into clean air. For example, dust and odor particles in the air can be filtered. In addition, the composite filter (30) can be provided to be selectively foldable. For example, the composite filter (30) can be folded to minimize the volume of the composite filter (30) during delivery, and can be unfolded to perform the function of the composite filter (30) after delivery. The composite filter (30) can include a filter unit (100), a filter module (200), a bracket (300), and a connecting member (400).

[0050] The filter unit (100) is configured to allow air to pass through, and can filter the air passing through the filter unit (100) into clean air. The filter unit (100) may be formed to extend vertically. In addition, the filter unit (100) may be arranged such that one surface through which air passes is parallel to one surface of the filter module (200). For example, the filter unit (100) may secondarily filter air that has been primarily filtered by passing through the filter module (200), but depending on the flow direction, the filter unit (100) may also firstly filter the air before passing through the filter module (200). The filter unit (100) may include a filter member (110) and a filter frame (120).

[0051] The filter member (110) is configured to trap dust in the air, and can filter air passing through the filter member (110) into clean air. In addition, the filter member (110) can be supported by a filter frame (120). In addition, the filter member (110) can include a filtering unit (111).

[0052] A filtering unit (111) may be provided to filter air. A plurality of pleats extending in the vertical direction may be formed in the filtering unit (111). For example, the plurality of pleats of the filtering unit (111) may be folded to contract in a direction perpendicular to the vertical direction, or may be unfolded to extend in a direction perpendicular to the vertical direction. A portion of the edge of the filtering unit (111) may be surrounded by a support unit (121) to be described later, and may be supported by the support unit (121). For example, the upper and lower portions of the filtering unit (111) may be supported by the support unit (121). In addition, a bracket (300) may be attached to a side portion of the filtering unit (111).

[0053] Meanwhile, a plurality of filtering units (111) may be provided, and at least some of the filtering units (111) may be arranged adjacent to each other. The plurality of filtering units (111) may be provided in the number of two or more, and as a more detailed example, the filtering units (111) may be provided in an even number. Hereinafter, it is described that four filtering units (111) are provided, but this is merely an example, and any number may be provided.

[0054] Referring to FIGS. 6 to 8, a plurality of filtering units (111) may be formed integrally and may have their sides connected so as to be rotatable relative to one another. In other words, any one of the plurality of filtering units (111) may be rotatable relative to another adjacent filtering unit (111). For example, each of the plurality of filtering units (111) may be configured to rotate around an imaginary axis extending in the vertical direction and fold with the adjacent filtering unit (111).

[0055] When each of the plurality of filtering units (111) is rotated relative to each other so as to form an angle less than a normal angle, that is, an angle less than 180 degrees, with respect to the adjacent filtering units (111), the plurality of filtering units (111) may be arranged along a loop-shaped path. Here, the loop-shaped path may be defined as a predetermined path that starts from one point, passes through another point, and then returns to the same point. For example, the plurality of filtering units (111) may be provided in threes. As a more detailed example, referring to FIG. 6, the plurality of filtering units (111) may be rotated relative to each other so as to form a predetermined angle (an angle of 90 degrees when there are four filtering units) with respect to the adjacent filtering units (111). Here, the predetermined angle may be an angle at which, when viewed from above, the area of ​​the inner space surrounded by the plurality of filtering units (111) is maximized. At this time, as shown in Fig. 2, the plurality of filtering units (111) viewed from above can form a rectangular loop. In this way, when each of the plurality of filtering units (111) forms an angle greater than 0° and less than 180° with respect to the adjacent filtering unit (111), it is defined as an unfolded state.

[0056] Referring to FIG. 8, the plurality of filtering units (111) can rotate relative to each other so that at least two adjacent filtering units (111) are arranged in parallel. For a more detailed example, one filtering unit (111) among the plurality of filtering units (111) can be folded relative to another filtering unit (111) by rotating relative to another filtering unit (111) connected to one side. In this case, the angle between one filtering unit (111) and another filtering unit (111) connected to one side is 0°. In addition, one filtering unit (111) can be unfolded relative to another filtering unit (111) by rotating relative to another filtering unit (111) connected to the other side. When each of the plurality of filtering units (111) forms an angle of 0° or 180° with respect to an adjacent filtering unit (111), it is defined as a folded state. In this case, the angle between one filter (111) and another filter (111) connected to the other side is 180°.

[0057] In this way, when the plurality of filtering parts (111) are in a folded state, two adjacent filtering parts (111) are arranged in parallel, so that the adjacent filtering parts (111) can be in close contact with each other. In addition, the space between the plurality of filtering parts (111) is minimized, so that the volume of the filter member (110) is minimized.

[0058] The filter frame (120) can support the filter member (110). For example, the filter frame (120) is provided to surround the upper or lower side of the filter member (110) and can support the filter member (110) at the upper or lower side of the filter member (110). The filter frame (120) can include a plurality of support members (121).

[0059] The support member (121) can support the filter member (111). For example, the support member (121) can support the filter member (111) from the upper or lower side of the filter member (111). In addition, the support members (121) can be provided in multiple pieces, and the multiple support members (121) can be formed integrally. The multiple support members (121) can be connected to the side so as to be rotatable relative to each other. In other words, any one of the multiple support members (121) can be rotated relative to another adjacent support member (121).

[0060] The filter module (200) may be provided to filter air drawn into the interior of the body portion (10) from the outside. The filter module (200) may be configured as an additional dust collection filter to maximize dust collection performance, but may also be configured as a functional filter other than for dust collection purposes. For example, it may be a deodorizing filter to remove odors, a smoke filter to remove smoke particles, or a new house filter to remove substances that cause sick house syndrome. As a more detailed example, the deodorizing filter may include a deodorizing filter of the corrugated type or the activated carbon type. The filter module (200) may be arranged parallel to one or more of the plurality of filtering units (111) of the filter unit (100) and may be arranged on the outside of the filter unit (100). In other words, the filter module (200) may be arranged to surround at least a portion of the filter unit (100). The filter module (200) can primarily filter air before air flowing in from the outside is filtered in the filter unit (100), but when applied to an air purifier with a different flow direction, it can also filter air after being filtered in the filter unit (100).

[0061] In addition, the filter module (200) may be provided in multiple pieces, and each of the multiple filter modules (200) may be connected to multiple filtering units (111) in parallel. In order to connect the filter module (200) and the filtering unit (111), a bracket (300) and a connecting member (400) may be attached to the filter module (200) and the filtering unit (111). For example, the upper and lower surfaces of the filter module (200) may be connected to the filtering unit (111) through the connecting member (400). In addition, the side surface of the filter module (200) may be connected to the filtering unit (111) through the bracket (300).

[0062] Although in some of the specifications and drawings herein, the filter module (200) is expressed as being provided in multiple units corresponding to the number of filtering units (111), this is merely an example, and the filter module (200) may be provided in one or more units separately from the number of filtering units (111). Accordingly, the filter module (200) may be provided in a number less than the number of filtering units (111) to surround multiple filtering units (111), and as a more detailed example, as shown in FIGS. 3 to 5, it is also possible to provide one filter module (200).

[0063] Meanwhile, the filter module (200) may include an air purification member (210) and a module frame (220).

[0064] An air purification member (210) may be provided to filter air. The air purification member (210) may be partially supported by a module frame (220). For example, the upper or lower side of the air purification member (210) may be surrounded by the module frame (220) and supported by the module frame (220). In addition, a bracket (300) may be attached to a side of the air purification member (210).

[0065] Meanwhile, a protrusion (211) may be formed on at least one of the two side surfaces of the air purification member (210). For example, the air purification member (210) may include a plurality of members extending in the vertical direction and having a repeated curved shape, and the protrusion (211) may be a portion of the member of the air purification member (210) that protrudes outward. A bracket (300) may be attached to the protrusion (211). In addition, the protrusion (211) may be formed to correspond to a concave portion (321) of the bracket (300) to be described later.

[0066] The module frame (220) can support the air purification member (210). The module frame (220) can support the air purification member (210) from the upper or lower side of the air purification member (210).

[0067] The bracket (300) can support the filter unit (100) and the filter module (200) that are arranged adjacent to each other. For example, the bracket (300) can support the filter units (111) that are arranged adjacent to each other among the plurality of filter units (111) so as to be rotatably supported with respect to each other. In addition, the bracket (300) can support the support units (121) that are arranged adjacent to each other among the plurality of support units (121) so as to be rotatably supported with respect to each other. The bracket (300) can connect the filter unit (100) and the filter module (200). For example, one side of the bracket (300) can be attached to the side of the filter unit (111) or the support unit (121), and the other side of the bracket (300) can be attached to the side of the filter module (200). In addition, the bracket (300) can seal the gap between the filter unit (100) and the filter module (200). In addition, an adhesive or adhesive tape that provides adhesive strength for attachment to the side of the filter unit (100) and the side of the filter module (200) may be provided on one side of the bracket (300). The bracket (300) may be formed to extend vertically along the filter section (111) and may be provided in multiple pieces.

[0068] Meanwhile, the bracket (300) may be configured to be folded or unfolded in response to the rotation of the filter (111) or the support (121). For example, the bracket (300) may be unfolded to form a predetermined angle greater than 0° and less than 180° when the filter (111) is in an unfolded state (i.e., when the composite filter (30) is mounted on the air purifier (1) and placed in a first state). In addition, when the filtering portion (111) is in a folded state (i.e., when the composite filter (30) is placed in a second state in which it is removed from the air purifier (1) for storage or transportation), the bracket (300) disposed between some of the plurality of filtering portions (111) can be fully unfolded to form an angle of 180°, and the bracket (300) disposed between other parts of the plurality of filtering portions (111) can be folded to form an angle of 0°. The bracket (300) may be a flexible material including, for example, one or more of a porous material such as a foam, a non-woven fabric, a synthetic fiber, and a natural fiber.

[0069] The bracket (300) may include a folding portion (310) and an attachment portion (320). The folding portion (310) and the attachment portion (320) may be formed integrally.

[0070] The folding portion (310) can be selectively folded according to the relative rotation of adjacently arranged filter portions (111) with respect to each other. The folding portion (310) can be configured as a portion that folds in response to the rotation of the filter portion (111) among the brackets (300). For example, when the filter portion (111) rotates with respect to an adjacent filter portion (111), the virtual axis around which the filter portion (111) rotates can correspond to the folding portion (310). In addition, the folding portion (310) can be arranged between the filter portion (111) and another filter portion (111). The folding portion (310) can be provided at the exact center of the bracket (300) and extend in the vertical direction.

[0071] Referring back to FIG. 7, the attachment portion (320) may be attached to the filter portion (111) to connect a plurality of filter portions (111). The attachment portions (320) may be provided in multiple pieces, and the multiple attachment portions (320) may be respectively connected to the folding portions (310) with the folding portions (310) interposed therebetween. In addition, the multiple attachment portions (320) may be respectively attached to the filter portions (111) that are arranged adjacently among the multiple filter portions (111). Meanwhile, the attachment portion (320) may be attached across the filter member (110) and the filter module (200), and may seal the space between the filter member (110) and the filter module (200). More specifically, the attachment portion (320) can be attached across the side of the filtering portion (111) of the filter member (100) and the side of the air purifying portion (210) of the filter module (200). The attachment portion (320) can be attached to the support portion (121) to connect a plurality of filter frames (120). For example, the attachment portion (320) can extend from one edge of the filtering portion (111) to the other edge of the air purifying portion (210) to cover the sides of the filtering portion (111) and the air purifying portion (210).

[0072] Meanwhile, an adhesive surface that adheres to the side surface of the air purification member (210) may be provided on one surface of the attachment portion (320). The adhesive surface may adhere to the side surface of the air purification member (210). In addition, a concave portion (321) corresponding to at least a portion of the protrusion (211) may be formed on the attachment portion (320). For example, when the attachment portion (320) is attached to the side surface of the air purification member (210), the concave portion (311) may be attached to the protrusion (211).

[0073] The connecting member (400) may be attached to the filter unit (100) and the filter module (200) to connect the filter unit (100) and the filter module (200). For example, a part of the connecting member (400) may be attached to the upper and lower surfaces of the filter unit (100), and another part of the connecting member (400) may be attached to the upper and lower surfaces of the filter module (200). In addition, an adhesive or adhesive tape that provides adhesive force for attachment to the upper and lower surfaces of the filter unit (100) and the upper and lower surfaces of the filter module (200) may be provided on one surface of the connecting member (400). In addition, the connecting member (400) may seal a gap between the filter unit (100) and the filter module (200). In other words, the connecting member (400) can be attached to the support member (121) of the filter unit (100) and the module frame (220) of the filter module (200) so that the gap between the support member (121) and the module frame (220) of the filter module (200) is sealed. The connecting member (400) can be, for example, a flexible material including one or more of a porous material such as foam, a non-woven fabric, a synthetic fiber, and a natural fiber. However, as shown in FIG. 6, the connecting member (400) can be omitted.

[0074] Below, the effect of a composite filter (30) having the configuration described above will be described.

[0075] The composite filter (30) provides the effects described below, and its greatest significance lies in providing these effects economically with a simple configuration.

[0076] The composite filter (30) is configured such that multiple filter units (100) can be rotated relative to each other, so that they can be easily switched between an unfolded state and a folded state.

[0077] In addition, when the composite filter (30) is in a folded state, the adjacent filter elements (111) are arranged in contact with each other, thereby minimizing the space between the plurality of filter elements (110). The composite filter (30) can have a minimized volume when in a folded state, thereby reducing the cost required for transportation. In addition, the composite filter (30) can be converted to an unfolded state after transportation to perform the filter function.

[0078] Meanwhile, the bracket (300) can connect the filter unit (111) and another filter unit (111), and has the effect of improving durability by reinforcing the connecting portion. In addition, the bracket (300) and the connecting member (400) can seal the gap between the filter unit (100) and the filter module (200), thereby preventing air from flowing between the filter unit (100) and the filter module (200). As a result, there is the effect of preventing unfiltered air from the filter module (200) from flowing directly to the filter unit (100), thereby improving the purification efficiency.

[0079] Meanwhile, in addition to this configuration, according to the second embodiment of the present invention, the filter member (110) may be provided in six pieces. Hereinafter, the second embodiment of the present invention will be described with further reference to FIG. 10. In describing the second embodiment, the differences compared to the above-described embodiment will be mainly described, and the same description and drawing reference numerals will be used in the above-described embodiment.

[0080] In the second embodiment of the present invention, six filter elements (110) may be provided. When the plurality of filter elements (110) are in an unfolded state, they may rotate relative to each other to form an angle of 120° with respect to adjacent filter elements (110). In addition, the plurality of filter elements (110) when viewed from above may form a hexagonal loop. Each of the plurality of brackets (300) may rotate in response to the rotation of the plurality of filter elements (110).

[0081] The filter member (110) can filter air flowing in from more diverse directions and has the effect of improving filtration efficiency.

[0082] Hereinafter, with reference to FIGS. 11 and 12, a composite filter manufacturing method (S10) for manufacturing a composite filter according to the first embodiment of the present invention consisting of four surfaces will be described.

[0083] The composite filter manufacturing method (S10) can manufacture a composite filter (30) by processing a laminated base material in which a filter unit base material (100) and a filter module base material (200) are laminated. For example, the composite filter (30) can be manufactured using a filter manufacturing device (40) including a cutter (41) and a conveyor (42). The composite filter manufacturing method (S10) can include a laminated base material providing step (S100), a filter module cutting step (S200), a filter unit cutting step (S300), and a bracket attachment step (S400).

[0084] In the step of providing a laminated base material (S100), a laminated base material can be provided by laminating a provided filter module material (200) on a provided filter unit base material (100). Here, the filter unit base material (100) refers to a filter unit (100) before being cut, and the filter module material (200) refers to a filter module (200) before being cut. The laminated base material can be transported by a conveyor (42), and can be transported in one direction through the conveyor (42).

[0085] In the filter module cutting step (S200), the filter module material (200) located at the top of the laminated material moving on the conveyor (42) can be cut. For example, in the filter module cutting step (S200), a plurality of cutters (41) can cut the filter module material (200) along a virtual cutting line extending in the thickness direction of the filter module material (200). At this time, the filter module material (200) can be divided into a plurality of filter modules (200).

[0086] In the filter unit cutting step (S300), a portion of the filter unit base material (100) located at the bottom of the laminated base material moving on the conveyor (42) can be cut. For example, in the filter unit cutting step (S300), after a plurality of cutters (41) cut the filter module base material (200), they can continuously move between the plurality of filter modules (200) along the cutting line to cut the filter unit base material (100) to a depth smaller than the thickness of the filter unit base material (100). The depth at which the filter unit base material (100) is cut can be appropriately adjusted depending on the wrinkles formed in the filter unit base material (100) so that the filter unit base material (100) is not completely divided but a plurality of filter members (110) that are connected to each other can be formed. When manufacturing a composite filter according to the first embodiment of the present invention consisting of four sides, when cutting at a point corresponding to a multiple of 4 as shown in FIG. 11, the cutting depth is adjusted so that the filter unit base material (100) is completely divided.

[0087] In the bracket attachment step (S400), the filter unit (100) and the filter module (200) manufactured in the filter module cutting step (S200) and the filter unit cutting step (S300) can be connected via the bracket (300). In other words, in the bracket attachment step (S400), the filter unit (100) and the filter module (200) can be connected by attaching the bracket (300) to the side of the filter unit (100) and the filter module (200) which are arranged adjacent to each other. The bracket attachment step (S400) can be performed after the filter module cutting step (S200) and the filter unit cutting step (S300).

[0088] Although the embodiments of the present invention have been described as specific embodiments, these are merely examples, and the present invention is not limited thereto, but should be construed to have the broadest scope in accordance with the technical concepts disclosed in this specification. Those skilled in the art may implement patterns of shapes not specified by combining / substituting the disclosed embodiments, but this also does not depart from the scope of the present invention. In addition, those skilled in the art may easily modify or alter the disclosed embodiments based on this specification, and it is clear that such modifications and alterations also fall within the scope of the present invention.

Claims

1. A filter unit comprising a filter member having a plurality of filtering sections that are connected at the sides so as to be rotatable relative to each other and filter air; One or more filter modules arranged in parallel with at least one of the plurality of filter units; and A bracket is included that supports the filter modules and the filter units arranged adjacent to each other so that the filter units arranged adjacent to each other among the plurality of filter units can rotate relative to each other, The above brackets are, A folding member that is selectively folded according to the relative rotation of the filter members arranged adjacent to each other; and It includes a plurality of attachment parts each connected to the folding part with the folding part in between and each attached to the side of the filter part arranged adjacent to each other, The above folding portion and the above attachment portion are provided as one piece and are formed of a flexible material, The above attachment portion extends to the side of the adjacent filter module so that the gap between the filter portion and the filter module is sealed. Composite filter.

2. In paragraph 1, The above plurality of filtering parts are three or more filtering parts, When each of the plurality of filtering sections is rotated relative to each other so as to form an angle less than a normal angle with respect to the adjacent filtering section, the plurality of filtering sections are arranged along a loop-shaped path. Composite filter.

3. In paragraph 2, The above plurality of filtering parts are an even number of filtering parts, Composite filter.

4. In paragraph 1, The above plurality of filtering units can be rotated relative to each other so that at least two adjacent filtering units are arranged in parallel. Composite filter.

5. In paragraph 1, The above filter module, An air purifying member for filtering air; and Including a module frame that supports the upper or lower side of the air purification member, At least one of the two sides of the air purifying member has a protrusion formed thereon. Composite filter.

6. In paragraph 5, The above bracket has a concave portion corresponding to at least a portion of the protrusion and an adhesive surface that is adhered to the side of the air purifying member. Composite filter.

7. In paragraph 5, The above filter unit, Further comprising a filter frame having a support member supporting the upper or lower side of the filter member, The above composite filter is, Further comprising a connecting member attached to the upper or lower side of the support member and the module frame, which are arranged adjacent to each other so that the gap between the support member and the module frame is sealed. Composite filter.

8. In paragraph 1, The above filter module includes a Colgate filter, Composite filter.

9. A composite filter according to any one of paragraphs 1 to 8; and A blower comprising a fan that provides blowing force to allow outside air to pass through the composite filter. Air purifier.

10. A method for manufacturing a composite filter according to any one of claims 1 to 8 using a filter manufacturing device, A laminated material providing step for providing a laminated material in which a filter unit material and a filter module material are laminated; and A filter module cutting step in which a cutter of the above filter manufacturing device moves along a virtual cutting line extending in the thickness direction of the laminated material to cut the filter module material into a plurality of filter modules; After the filter module cutting step, the cutter moves between the plurality of filter modules along the cutting line to cut the filter unit base material to a depth smaller than the thickness of the filter unit base material; and Including a bracket attachment step in which the bracket is attached to the side of the filter unit and the filter module which are arranged adjacent to each other, The filter unit including the plurality of filtering parts and the plurality of supporting parts is formed from the filter unit base material through the filter unit cutting step. Method for manufacturing a composite filter.

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