JP5636722B2 - Air filter and manufacturing method thereof - Google Patents

Description

  The present invention relates to an air filter incorporated in an air conditioner or the like and disposed of after use.

  Conventionally, this type of air filter is known in which a filter medium formed by folding a pleat is surrounded by a frame.

  Hereinafter, the air filter will be described with reference to FIGS. 12 and 13.

  As shown in the figure, an enclosing frame is formed by the side plate 101, and a lower frame 103 in which a frame side 102 for placing the filter medium is extended on the lower surface, and a filter medium 104 and a side plate 105 housed in the lower frame 103 are enclosed. An upper frame 107 is formed on the upper surface of the frame, and a frame edge 106 for holding the filter medium is extended on the upper surface to accommodate the lower frame 103. The lower frame 103 and the upper frame 107 are joined by the convex portion 108 and the hole 109 to form a filter. Was.

  Further, a filter medium formed in a zigzag shape is surrounded by a reinforcing material (see, for example, Patent Document 1).

JP 2002-1039 A ([0006] FIG. 1)

  In such a conventional air filter, the filter medium 104 is released from the state in which the lower frame 103 and the upper frame 107 are connected by the projection 108 and the hole 109, and the filter medium 104 is taken out and discarded, and replaced with a new filter medium. The lower frame 103 and the upper frame 107 were used again to reduce the waste, but it took time to replace the filter medium 104 and the filter medium 104 was disposed of in landfill, increasing the waste, There is a problem that the filter medium 104 is not reused, and it is required to reuse the air filter without trouble.

  The present invention solves such a conventional problem. The air filter is adapted to various mounting forms, and is formed of a frame forming body made of a filter medium and a synthetic resin foam sheet material. The object is to provide a filter that can be reused as a raw material.

  Conventionally, air filters have a problem in that the vertical, horizontal, and thickness of the air filter are not standardized to accommodate the dimensions of the air conditioner and cannot be used for molds due to high-mix low-volume production. It is required to be able to make things without need.

  In order to achieve the above object, an air filter of the present invention is provided over a filter medium formed by pleat folding to a predetermined size and a ventilation end surface of a side surface of the filter medium, and holds the filter medium in a predetermined shape. The frame body is a band-shaped synthetic resin foam sheet material having a U-shaped cross-section formed by bending a side in the longitudinal direction.

  By this means, it is possible to change the shape to a good quality waste regenerated fuel as it is without separating the filter medium and the frame after use, and to form an air filter by solidifying paper and sealing material. In comparison, a stable accuracy of strength and dimensions can be secured, and an air filter can be obtained that can be used without problems even when the used filter is cleaned and regenerated, and has improved durability and detachability of the apparatus.

  According to the present invention, without separating the filter medium and the frame body, it can be regenerated into a good quality waste regenerated fuel as it is, and compared with a frame body formed by solidifying paper or a seal material, It is possible to provide an air filter with improved strength and dimensional stability, and improved durability and detachability to the apparatus.

1 is an exploded perspective view showing a configuration of an air filter according to a first embodiment of the present invention. (A) Cross-sectional view of the air filter (b) Side view showing the mounting state of the air filter (A) Longitudinal side view, (b) Short side view of the air filter frame Exploded perspective view showing the configuration of the air filter Exploded perspective view showing the configuration of the air filter The perspective view which shows the L-shaped joining piece of Embodiment 2 of this invention The perspective view which shows the L-shaped joining piece of Embodiment 3 of this invention. Sectional drawing which shows the processing state of the L-shaped joining piece Sectional drawing which shows the assembly | attachment state of the same L-shaped joining piece Schematic of the frame ruled line processing equipment of Embodiment 3 of the present invention Schematic of the same frame, V-shaped notch processing equipment Exploded perspective view of a conventional air filter Detailed view of the main parts of a conventional air filter

  The present invention is an air filter composed of a filter medium formed by pleat folding to a predetermined size, and a frame that is provided over the ventilation end surface of the side surface of the filter medium and holds the filter medium in a predetermined shape. The frame body is a band-shaped synthetic resin foamed sheet material that is bent in the longitudinal direction to have a U-shaped cross section, and the waste regenerated fuel is left as it is without separating the filter medium and the frame body. It can be used as a raw material.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 5, the filter medium 2 is an adhesive 1 (hot melt) that pleats a nonwoven fabric made of synthetic fiber or the like made of a synthetic resin that does not contain chlorine, and maintains intervals in a plurality of rows at the peak. Is formed by applying and fixing. The frame body 7 is formed by cutting a synthetic resin fat foam sheet material that does not contain chlorine into a strip shape, and bending the side in the longitudinal direction into a U-shaped cross section. The frame body 7 is provided so as to surround the filter medium 2 across the side surface 3 and the ventilation end surface 4 of the filter medium 2. At this time, a notch 6 (FIG. 3) is provided at a portion corresponding to the corner of the filter medium 2 on the frame piece 5 side corresponding to the corner of the filter medium 2 and on the ventilation end face 4 side so as to be bent. 2 is formed so as to surround 4 rounds. Both end portions of the frame body 7 are joined at the side surface 3 in the pleat folding direction of the filter medium 2 and bonded and fixed to the four circumferences of the filter medium 2.

  In addition, a sealing material 9 formed of synthetic resin such as polyethylene, ester-based or ether-based urethane not containing chlorine is attached to the frame piece 5 provided on the ventilation end face 4 side of the frame 7, The air filter 10 is configured so as to increase the degree of sealing during assembly.

  In the above configuration, as shown in FIG. 2, when the air filter 10 is incorporated in the air flow path of the air conditioner along the mounting rail 40 together with the prefilter 10a, the frame body 7 has higher strength than paper and has dimensional accuracy. Is also stable and easy to incorporate. Further, since the sealing material 9 is brought into close contact with the device part of the air conditioner by the action of the wind pressure by the air blowing operation, air leakage from the air flow path is eliminated.

  Next, when dust accumulates on the air filter 10 and the air filter 10 needs to be replaced, the air filter 10 is pulled out from the mounting rail 40 and delivered to a waste fuel manufacturing factory as it is. It will be recycled to waste regenerated fuel.

  In this way, the production of waste fuel that is regenerated into waste regenerated fuel refers to so-called RPF (waste solidified fuel) production, waste plastic oil production, etc., and is performed for waste power generation and waste heat treatment It is. RPF is made by collecting burning debris, pulverizing it, drying it, compressing it with additives. The amount of heat of RPF is about half that of coal, combustion is stable, it does not rot, does not produce bad odor, can be stored, is easy to handle, has a higher combustion temperature than simple incineration, and burns It produces almost no harmful substances such as dioxins and has many advantages.

  In the first embodiment, the air filter 10 is unified with a synthetic resin not containing chlorine so that dioxins are not generated, and since paper and cloth are not included, maintenance management during combustion and storage as a homogeneous fuel is easy. It can be carried out.

  In the first embodiment, the frame body 7 is formed of a synthetic resin fat foam sheet material, and a band-shaped member having a U-shaped cross section is bent to fix the filter medium 2. However, as shown in FIG. A frame 7a is formed by joining a horizontal frame single piece 12 and a vertical frame single piece 13 which are in the shape of a letter and formed with inclined surfaces 11 at both ends of the frame piece 5a at the corners having the inclined surfaces 11. Has the same effect.

  Further, as shown in FIG. 5, a pair of frame bodies 14 each including a lateral frame single piece 12 having a U-shaped cross section and a vertical frame single piece 13 are provided, and the corner portions are formed by L-shaped joining pieces 15. Even if it joins and forms frame 7b, it brings about the same operation effect.

(Embodiment 2)
FIG. 6A shows an L-shaped joining piece 15 which is made of a material such as polypropylene by injection molding and is flat and has a hinge-shaped groove 16 and one or more protrusions 17 on each side. When assembling with the hole provided from the end surface of the frame forming body made of sheet material, the hinge-shaped groove 16 is bent 90 degrees as shown in FIG. 6B, and the protrusion 17 is inserted into the hole to heat the tip. It is welded 17a. The protrusion 17 of the L-shaped joining piece 15 has one or more protrusions 17 on each side according to the thickness of the filter.

  In the above-described configuration, the frame can be reliably bonded, the bonding strength can be increased, and the dimensional stability accuracy can be increased.

(Embodiment 3)
Next, another embodiment of the filter frame will be described with reference to FIGS.

  FIG. 7 shows an L-shaped joining piece 35 made of a synthetic resin foamed sheet material. As shown in FIG. 8, the L-shaped joining piece 35 presses a press blade 36a to process a crease portion. The press blade 36a has a flat portion of about 0.5 mm at the tip, and has a tapered surface of about 40 degrees on both sides thereof. By pressing the press blade 36a against the L-shaped joining piece 35, a hinge-shaped groove 36 having a V-shaped cross section is formed. Further, the L-shaped joining piece 35 is provided with one or more holes 37 on each side. As shown in FIG. 9, the L-shaped joining piece 35 bends the hinge-shaped groove 36 by 90 degrees, and further includes a horizontal frame unit piece 32 and a vertical frame unit piece 33 made of a strip-shaped synthetic resin foam sheet material. A hole provided on the end side is aligned with a hole 37, and a resin rivet 37a is inserted (a rivet 37b in a fixed state). The hole 37 of the L-shaped joining piece 35 may be provided at one or more places on each side according to the thickness of the filter.

  According to the above configuration, since the L-shaped joining piece 35 joins the horizontal side frame single piece 32 and the vertical side frame single piece 33, reliable joining of the frame body, increased strength of the joining, and dimensional stability accuracy are achieved. Can be increased. Further, since the resin rivet 37a can be easily separated, the filter at the time of disposal can be disassembled and reduced in volume.

(Embodiment 4)
Next, the manufacturing method of the filter shown in Embodiments 1, 2, and 3 will be described.

  10 and 11, an installation for producing a molded body frame made of a synthetic resin fat foamed sheet material having a U-shaped cross section is shown.

  FIG. 10 shows a ruled line processing facility for folding the belt-shaped synthetic resin foam sheet material 18 so that the cross section becomes a U-shape. As shown in FIG. 10, the movable guides 19 and 20 are matched to the width of the strip-shaped synthetic resin foam sheet material 18, and the synthetic resin foam sheet material 18 as a material is placed on the processing table. The circular blade 21 is fixed at a position away from the end of the side of the synthetic resin foam sheet material 18 to be bent. In this state, the synthetic resin foam sheet material 18 is inserted into the roller 23, and the pneumatic cylinder 22 having the circular blade 21 at the tip is lowered. Then, the ruled line 18 a is processed on one side of the synthetic resin foam sheet material 18 by sending the synthetic resin foam sheet material 18 in accordance with the rotation of the roller 23. Similarly, the opposite ruled line 18a is processed. If this processing is completed, the synthetic resin foamed sheet material 18 can be easily bent into a U-shape along the ruled line 18a.

  According to the said structure, a frame can be processed with respect to the thickness of arbitrary filters by adjustment of the width | variety of the synthetic resin foam sheet material 18, and the movable guides 19 and 20 of an installation.

  FIG. 11 shows equipment for processing a V-shaped notch 24 that is a bending position in the frame longitudinal direction of the strip-shaped synthetic resin foam sheet material 18. Prior to this processing, a ruled line 18 a having a U-shaped cross section is processed on both sides of the synthetic resin foam sheet material 18.

  As shown in FIG. 11, the positioning guide 25 is set at a predetermined position, and the side (short side) of the strip-shaped synthetic resin foam sheet material 18 that is not processed with the ruled line 18 a is applied to the positioning 25 a of the guide 25. . The press machine 28 includes a cylinder 27 made of pneumatic pressure or hydraulic pressure, and a square blade 26 capable of forming a V-shaped notch 24 is attached to the tip of the cylinder 27. The V-shaped cutout 24 is processed by the square blade 26 of the press machine 28. At this time, if the guide 25 for restricting the position is set to a predetermined position and the V-shaped notch 24 on one side is completed, the V-shaped notch 24 on the opposite surface is implemented, whereby the processing efficiency can be improved.

  The said structure WHEREIN: The installation which can manufacture easily the vertical and horizontal dimensions of a filter frame can be provided.

  It is conceivable that the circular blade 21 has a sharp tip. In this case, the circular blade 21 having a sharp tip is pressed against the synthetic resin foam sheet material 18 so that the remaining thickness is about 0.4 mm. According to the ruled line 18a (half-cut ruled line) completed by such processing, the bending process can be performed with high accuracy.

  Further, the circular blade 21 may have a flat portion of about 0.5 mm at the tip and a taper surface of 40 degrees toward the circle center of the circular blade on both sides thereof. Then, the synthetic resin foamed sheet material 18 is pressed with a circular blade 21 having a flat portion at the tip so that the remaining thickness is about 0.4 mm. According to such processing, the finished ruled line 18a (rolled ruled line) is improved in strength as compared with the ruled line processing by cutting, the face is not generated from the cut surface, the appearance is improved, and it can be easily manufactured. become.

  Further, in FIG. 10, the position of the circular blade 21 for processing the rolling ruled line 18a having one U-shaped cross section of the synthetic resin foamed sheet material 18 can be adjusted, and the guides 29 and 30 are adjusted in FIG. If the peak portion of the notch 24 matches the ruled line 18a of the frame, the rising dimension of the U-shaped cross section of the filter frame can be arbitrarily adjusted.

  By using a synthetic resin that does not contain chlorine to form a product, it can be used as a raw material for waste regenerated fuel when the product reaches the end of its life and includes paper or cloth that generates less heat. Therefore, it can be effectively used as a high-power fuel for thermal power generation, etc., and it can be applied to other products made of synthetic resin to prevent dioxin generation. The amount of fuel used can be reduced.

DESCRIPTION OF SYMBOLS 1 Adhesive 2 Filter medium 3 Side surface 4 Ventilation end surface 5 Frame piece 5a Frame piece 6 Notch 7 Frame body 7a Frame body 7b Frame body 9 Sealing material 10 Air filter 15 L-shaped joining piece 16 Hinge-shaped groove 17 Protrusion 18 Synthetic resin Foamed sheet material 19 Movable guide 20 Movable guide 21 Circular blade 24 V-shaped notch 25 Guide 26 Square blade 35 L-shaped joining piece 36 Hinge-shaped groove 37 Hole

Claims (1)

A predetermined formed by folding pleats size filter medium is configured to pre-Symbol filter media in the frame body for holding a predetermined shape, wherein the frame body, a strip of synthetic resin foam sheet material folded longitudinal sides be one obtained by the shape of the cross section U Te, synthetic resin foam sheet material Tona Ru cross section has an L-shaped joining pieces forming a V-shaped hinge-shaped groove, wherein each piece 1 L-shaped joining pieces A rivet hole is provided at more than the location, a rivet hole is provided at the short side end of the frame, and the hole provided in the L-shaped joining piece and the hole provided in the frame are made of synthetic resin. Air filter joined with rivets.

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