Filter

Abstract

To realize volume reduction by incineration.SOLUTION: The filter 1 includes a filter material 21a having folded surface parts 21b, end surface parts 21c, and stacked surface parts 2A that are folded in a bellows shape and face opposite directions, a separation 2A inserted between the folds of the filter material 2B, a frame body 3 provided along the end surface parts 2A and the stacked surface parts 21a with the folded surface parts 21b of the filter material open, and an elastic member 4 provided so as to cover the end surface parts of the filter material and interposed between the end surface parts and the frame body 3. 21c 2A 21b 21b, the 2A of the filter medium, the 2B of the separators and the elastic member 4 are composed of a flammable material, and the frame body 3 is composed of wood and joined by wood framing.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a filter. [Background technology]

[0002] For example, Patent Document 1 describes a filter having a filter medium through which indoor air passes and captures substances contained in the air, and a frame material that covers the outer periphery of the filter medium. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-102311 Summary of the Invention [Problem to be solved by the invention]

[0004] To ensure the performance of a filter, it is important that the space on the intake side and the space on the discharge side are separated by a sealing member. Even in the filter itself, the filter media and the frame material are adhered together with an adhesive, and the intake side and discharge side of the filter media are separated by the frame material.

[0005] However, due to the demand for volume reduction, dismantling filters with the above configuration requires heating with a heater to soften the adhesive and then removing it with a scraper, which is inefficient and time-consuming. In particular, in the case of filters that adsorb infectious aerosols or other radioactive materials, such as those described in Patent Document 1, dismantling requires workers wearing protective equipment inside a greenhouse, making the work difficult to carry out smoothly. In addition, in such a working environment, workers may suffer from heatstroke. Furthermore, after dismantling the filter, because part of the filter media and the frame material are made of metal, separation work is required, including the adhesive.

[0006] To further reduce the volume, it would be desirable to incinerate the filter. However, since the adhesive generates exhaust gases and part of the filter media and the frame material are made of metal, reducing the volume by incineration is difficult.

[0007] An object of the present invention is to provide a filter that can be reduced in volume by incineration. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, a filter according to one embodiment of the present invention includes a filter material that is folded accordion-like and has folded surface portions, end surface portions, and stacked surface portions facing in opposite directions; a separator inserted between the folds of the filter material; a frame body that opens each of the folded surface portions of the filter material and is arranged along each of the end surface portions and each of the stacked surface portions; and an elastic member that is arranged to cover each of the end surface portions of the filter material and is interposed between the end surface portions and the frame body, wherein the filter material, the separator, and the elastic member are made of a combustible material, and the frame body is made of wood and joined together by woodworking. [Effects of the Invention]

[0009] According to this invention, volume reduction by incineration can be achieved. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is an exploded perspective view of a filter according to an embodiment. [Figure 2] FIG. 2 is an assembled perspective view of the filter according to the embodiment. [Figure 3] FIG. 3 is a partially enlarged cross-sectional view of the filter according to the embodiment. [Figure 4] FIG. 4 is a partially enlarged cross-sectional view of the filter according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Here, for convenience, the X direction is the depth direction, the Y direction is the horizontal direction, and the Z direction is the vertical direction shown in Figures 1 to 3. More specifically, the X direction is the direction in which air flows as a filter.

[0012] The filter 1 of the embodiment includes a filter medium 2, a frame 3, and an elastic member 4.

[0013] The filter media 2 performs the function of a filter. The filter media 2 of this embodiment includes a filter medium 2A and a separator 2B.

[0014] The filter medium 2A is made of a combustible material such as glass fiber and formed into a sheet shape, which is continuously folded back in an accordion-like manner. This configuration results in the filter medium 2A being folded into a generally rectangular parallelepiped shape. In this embodiment, the filter media 2 has rectangular folded-back surfaces 21a formed by folding back the filter medium 2A on each side facing the X direction, rectangular end surfaces 21b formed by folding back the filter medium 2A on each side facing the Z direction, and rectangular stacked surfaces 21c formed by folding back the filter medium 2A on each side facing the Y direction. The folded-back ends 21d of the filter medium 2A are oriented in the same direction as the X direction, which is the direction of air flow.

[0015] Separator 2B is sandwiched between the folds of filter medium 2A and stacked together with filter medium 2A in the Y direction. Separator 2B is formed by folding a thin plate made of a combustible material such as wood fiber, wood, or synthetic resin (e.g., polypropylene) in a zigzag pattern in the Z direction. Separator 2B ensures the spacing between the folds of filter medium 2A and maintains the cubic shape of filter medium 2A.

[0016] The frame 3 supports the filter media 2 and is attached to an air passage (not shown). The frame 3 includes plate-shaped first frame members 3A that fit along the end surfaces 21b of the filter media 2 and plate-shaped second frame members 3B that fit along the stacking surfaces 21c of the filter media 2. The first and second frame members 3A and 3B are made of combustible wood. Examples of wood include cedar, paulownia, cypress, magnolia, China tree, ginkgo, walnut, Sen, camphor, horse chestnut, wild cherry, chestnut, elm, ash, zelkova, oak, Distylium racemosum, and yew. Cedar is preferred because it is relatively lightweight, soft, and easy to process, and because thinned wood can be used. The frame members 3A and 3B surround the end surfaces 21b and stacking surfaces 21c of the filter media 2 in the Z direction and the Y direction, respectively, while the folded surfaces 21a in the X direction are open to the outside of the frame 3.

[0017] The first frame member 3A and the second frame member 3B have joints 3Aa and 3Ba formed by wooden joining. The first frame member 3A has joints 3Aa formed at both ends in the Y direction. The second frame member 3B has joints 3Ba formed at both ends in the Z direction. The frame body 3 is assembled by joining the first frame member 3A and the second frame member 3B at the joints 3Aa and 3Ba, with both ends in the X direction of the first frame member 3A as opening ends 3Ab and both ends in the X direction of the second frame member 3B as opening ends 3Bb, with the opening ends 3Ab and 3Bb flush with each other to form a rectangular shape surrounding the filter media 2.

[0018] There are hundreds of types of wooden joints that make up the joints 3Aa, 3Ba, but the illustration mainly shows those made of joints. Other types of wooden joints include those that use tenons and grooves, or wedges, dowels, and mitres. In this way, by using wooden joints, the frame 3 can be joined without using metal materials other than wood, such as screws, bolts, or nails.

[0019] Furthermore, the frame 3 is secured in its sealing properties and strength by filling gaps formed at the assembled joints 3Aa, 3Ba with a filler containing silicon resin (for example, silicone).

[0020] As shown in FIG. 2, the frame body 3 includes assembled joints 3Aa and 3Ba, and the outer periphery is wrapped and covered with a silicone resin (e.g., silicone) sheet 5 along the Y and Z directions to ensure sealing properties and strength.

[0021] Although not shown in the drawings, gaskets are attached continuously to the opening edge 3Ab of the first frame member 3A and the opening edge 3Bb of the second frame member 3B, which form the opening edges of the frame 3. The gaskets can be made of a flammable material that generates little exhaust gas, such as natural rubber, urethane resin, or silicon resin (e.g., silicone). When the assembled filter 1 is installed, the gaskets abut against a rack or the like to separate the inside of the frame 3, where the filter media 2 is placed, from the outside of the frame, ensuring airtightness.

[0022] The elastic member 4 is formed in a sheet-like shape as a rectangular surface member that is equal to or larger than the end surface portion 21b of the filter media 2. The elastic member 4 is made of a gel material, which is a sheet-like viscoelastic material, or a fibrous material, which is an elastic material compressed into a sheet or raised on the sheet surface (e.g., felt in the case of compression). Examples of the gel material of the elastic member 4 include thermoplastic elastomers (TPEs) such as urethane elastomers. Examples of the fibrous material of the elastic member 4 include natural fibers such as wool and cotton, and chemical fibers such as rayon and acrylic.

[0023] As shown in Figure 3, the elastic member 4 is arranged to cover the end surface portion 21b of the filter media 2 and is sandwiched between the end surface portion 21b of the filter media 2 and the plate surface of the first frame member 3A of the frame body 3, thereby closely adhering to the end surface portion 21b of the filter media 2 and the plate surface of the first frame member 3A, thereby ensuring sealing of the filter material 2A in the filter media 2.

[0024] Additionally, each bellows-shaped folded end 21d of the filter material 2A in the filter media 2 is located within the range of each stacking surface portion 21c and is fixed to the plate surface of the second frame member 3B with a sealant (a silicone resin sheet, for example) continuously applied in the Z direction. In this way, the filter material 2A of the filter media 2 is attached within the frame body 3 with a sealed structure.

[0025] Here, a method for assembling the filter 1 of the embodiment will be described.

[0026] As shown in FIG. 1 , first, the first frame member 3A on the lower side in the Z direction and the two second frame members 3B are joined together. An elastic member 4 is then placed on the upper surface of the first frame member 3A on the lower side in the Z direction. The filter media 2 is then placed on top of the elastic member 4. The elastic member 4 is then placed on top of the upper end surface 21b of the filter media 2. The first frame member 3A on the upper side in the Z direction is then placed on top of the elastic member 4 on the upper end surface 21b of the filter media 2, and joined to the two second frame members 3B. Then, gaps formed at the joined joints 3Aa and 3Ba are filled with a filler, or the outer periphery of the frame body 3 is covered with a sheet 5 along the Y and Z directions, including the joined joints 3Aa and 3Ba. The filter 1 of this embodiment is assembled in this manner and is made entirely of flammable materials without using any adhesives or metal materials. Conventional filters use adhesives and metal materials, which require time for the adhesive to harden and time for the screws and bolts to be attached, making assembly time consuming. However, the filter 1 of the embodiment does not require such time and can be easily assembled.

[0027] The filter 1 of the embodiment is characterized by including a filter material 2A that is folded accordion-like and has folded surface portions 21a, end surface portions 21b, and stacking surface portions 21c facing in opposite directions, a separator 2B inserted between the folds of the filter material 2A, a frame body 3 that opens each folded surface portion 21a of the filter material 2A and is arranged along each of the end surface portions 21b and each of the stacking surface portions 21c, and an elastic member 4 that is arranged to cover each of the end surface portions 21b of the filter material 2A and is interposed between the end surface portion 21b and the frame body 3, and the filter material 2A, separator 2B, and elastic member 4 are made of combustible material, and the frame body 3 is made of wood and joined by woodworking.

[0028] According to this filter 1, the filter medium 2A, separator 2B, frame 3, and elastic member 4 are made of combustible materials, so they can be incinerated. Moreover, because the frame 3 is made of wood and joined together using a wooden frame, metal materials such as screws or bolts are not required, making incineration possible, and the joining strength can be ensured. Moreover, the elastic member 4 is interposed between the end surface portion 21b and the frame 3, ensuring a seal between the filter medium 2A and the frame 3 through its elastic force, ensuring the function of the filter 1. As a result, the filter 1 of this embodiment can be reduced in volume by incineration.

[0029] The filter 1 of the embodiment can be incinerated, eliminating the need for disassembly or sorting, and facilitating disposal. The filter 1 of the embodiment can also be incinerated in an incinerator at the installation facility. The filter 1 of the embodiment does not require screws or bolts, making assembly easy, and can be brought to the installation facility in a disassembled form and reassembled. The filter 1 of the embodiment uses thinned wood for the wood frame 3, allowing for the effective use of thinned wood that would otherwise be discarded. The filter 1 of the embodiment can significantly reduce the amount of waste by reducing the volume through incineration, contributing to reduced waste storage costs and transportation costs.

[0030] In the filter 1 of the embodiment, the frame 3 is filled with silicone resin at least in the gaps at the joints 3Aa and 3Ba formed by the wooden joinery.

[0031] According to this filter 1, the sealing performance of the joints 3Aa and 3Ba of the frame 3 can be ensured.

[0032] In the filter 1 of the embodiment, the frame 3 includes joints 3Aa and 3Ba formed by wooden joining, and the outer periphery is covered with a silicone resin sheet.

[0033] According to this filter 1, the sealing performance of the joints 3Aa, 3Ba of the frame 3 can be ensured, and the strength of the frame 3 can be improved.

[0034] In the filter 1 of the embodiment, the elastic member 4 is made of a sheet-like gel material.

[0035] According to this filter 1, the gel material ensures close contact between the end surface portion 21b of the filter medium 2A and the frame 3, thereby ensuring a reliable seal.

[0036] In the filter 1 of the embodiment, the elastic member 4 is made of a fibrous material formed into a sheet shape.

[0037] According to this filter 1, the fibrous material can provide a seal between the end surface portion 21b of the filter medium 2A and the frame 3.

[0038] In the filter 1 of the embodiment, the filter medium 2A is made of glass fiber.

[0039] This filter 1 can provide a high air purification function due to the glass fiber filter material 2A.

[0040] In the filter 1 of the embodiment, the separator 2B is made of wood fiber, wood, or synthetic resin material.

[0041] According to this filter 1, the separator 2B can be made of a combustible material such as a paper product made of wood fiber or wood, which allows it to be incinerated and prevents the generation of exhaust gases.

[0042] In the filter 1 of the embodiment, the filter medium 2A is provided with both folded ends 21d of the accordion-like fold facing the same direction, and the frame 3 is oriented in the direction of air flow toward the folded ends 21d.

[0043] According to this filter 1, by directing the air flow direction toward each folded end 21d, each folded end 21d can be pressed against the surface of the frame body 3, as shown in Figure 4, thereby preventing each folded end 21d from peeling off from the surface of the frame body 3.

[0044] The present disclosure includes the following inventions. [Invention 1] a filter medium having folded surfaces, end surfaces, and stacked surfaces that are folded in accordion-like fashion and face in opposite directions; A separator inserted between the folded portions of the filter material; a frame body provided along each of the end surfaces and each of the stacking surfaces of the filter material, with each of the folded surfaces being open; an elastic member provided to cover each of the end surface portions of the filter material and interposed between the end surface portions and the frame; Including, the filter medium, the separator, and the elastic member are made of combustible materials; The frame is made of wood and joined by a wooden frame. filter. [Invention 2] The frame has a structure in which a silicone resin is filled in at least the gaps in the joints of the wooden frame. The filter according to claim 1. [Invention 3] The frame includes a wooden joint, and the outer periphery is covered with a silicone resin sheet. A filter according to claim 1 or 2. [Invention 4] The elastic member is made of a sheet-like gel material. A filter according to any one of claims 1 to 3. [Invention 5] The elastic member is made of a fibrous material formed into a sheet shape. A filter according to any one of claims 1 to 3. [Invention 6] The filter medium is made of glass fiber. 6. A filter according to any one of claims 1 to 5. [Invention 7] The separator is made of wood fiber, wood, or synthetic resin material. 7. A filter according to any one of claims 1 to 6. [Invention 8] The filter material is folded back in an accordion shape with both folded ends facing the same direction, The frame has an air flow direction toward each of the folded ends. 8. A filter according to any one of claims 1 to 7. [Explanation of symbols]

[0045] 1. Filter 2B separator 2A filter media 3 Frame 3Aa,3Ba joint 4 Elastic member 21a Folded surface part 21b End section 21c Laminated surface part 21d Folded end

Claims

1. a filter medium having folded surfaces, end surfaces, and stacked surfaces that are folded in accordion-like fashion and face in opposite directions; A separator inserted between the folded portions of the filter material; a frame body provided along each of the end surfaces and each of the stacking surfaces of the filter material, with each of the folded surfaces being open; an elastic member provided to cover each of the end surface portions of the filter material and interposed between the end surface portions and the frame; Including, the filter medium, the separator, and the elastic member are made of combustible materials; The frame is made of wood and joined by a wooden frame. filter.

2. The frame has a structure in which a silicone resin is filled in at least the gaps in the joints of the wooden frame. The filter of claim 1 .

3. The frame includes a wooden joint, and the outer periphery is covered with a silicone resin sheet. The filter of claim 1 .

4. The elastic member is made of a sheet-like gel material. The filter of claim 1 .

5. The elastic member is made of a fibrous material formed into a sheet shape. The filter of claim 1 .

6. The filter medium is made of glass fiber. The filter of claim 1 .

7. The separator is made of wood fiber or wood. The filter of claim 1 .

8. The filter material is folded back in an accordion shape with both folded ends facing the same direction, The frame has an air flow direction toward each of the folded ends. The filter of claim 1 .

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