JP2007038191A - filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter comprising a frame body for holding a filter material which can be produced at a low defect ratio of a formed product in a narrow production dispersion. <P>SOLUTION: The filter is provided with a frame body for holding a filter material which can be produced at a low defect ratio of a formed product in a narrow production dispersion by placing the frame body 1 in the outer periphery of the filter material 2, forming the frame body 1 by fitting formed frames 1a and 1b approximately in the same shape in the ventilation direction of the filter, sandwiching the filter material 2 between the fitting faces of the formed frames 1a and 1b, thereby firmly fixing the filter material 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a filter including a frame body that holds a filter medium.

  Conventionally, this type of filter is known in which a filter medium and a resin frame are integrally molded (see, for example, Patent Document 1).

  Hereinafter, the configuration of the filter will be described with reference to FIG.

As shown in the figure, a filter medium 101 for collecting dust or the like is placed in a molding machine, and a molten PP resin or the like is poured into the outer periphery of the filter medium 101 and cooled to solidify the resin, thereby allowing the filter medium 101 to be solidified. A frame 102 for holding is formed.
Japanese Patent Laid-Open No. 8-246311

  In the case of production in such a conventional filter, if there is a deviation or deflection when the flexible filter medium 101 is installed in the molding machine, the filter medium 101 may protrude from the frame 102, Because it happens that integral molding cannot be performed, it takes time to install the filter medium 101 in the molding machine, and it takes time to install the filter medium 101, and the molding time is longer and the mechanical efficiency is worse than molding with resin alone. In addition, there is a problem that the defective rate of the molded product is increased.

  In addition, there is a problem that the mold cost is high because it is a mold for integral molding.

  In addition, because the filter media swims in the resin melted at the time of molding, if the filter media is located on the surface of the frame when the resin is solidified, the shape of the filter media will rise as a pattern and the molded product There has been a problem that the defect rate of the product becomes high.

  Also, in the vicinity of the boundary between the filter media and the frame, the molten resin will flow out into the gap between the filter media, and clogging is likely to occur, resulting in high molded product defects and effective filter media during ventilation. Since the area was reduced, there was a problem that the collection efficiency was lowered.

  Further, since the filter medium can withstand the molding temperature and the moldability is deteriorated unless it is relatively thin, there is a problem that the filter medium has some restrictions.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a filter including a frame body that holds a filter medium with small manufacturing variations and a low defective rate of molded products.

  In order to achieve the above object, the filter of the present invention is a filter provided with a frame for holding a filter medium, wherein the frame is located on the outer periphery of the filter medium, and the two frames are substantially identical. The filter is formed by fitting a molded frame in the shape in the direction of ventilation of the filter, and the filter medium is sandwiched and fixed between the fitting surfaces of the two molded frames.

  Moreover, the filter of this invention fixes two molding frames with an adhesive agent.

  Moreover, the filter of this invention fixes two molding frames by welding.

  In the filter of the present invention, the filter medium is formed by sandwiching a filter medium larger than the outer shape of the molding frame into the molding frame and removing an excess portion.

  In the filter of the present invention, the shape of the fitting surface of the molding frame is formed in a bellows shape with respect to the direction perpendicular to the ventilation direction of the filter.

  In the filter of the present invention, the fitting surface of the molding frame is formed at an oblique angle with respect to the direction perpendicular to the ventilation direction of the filter.

  Further, the filter of the present invention is provided with a convex portion for engaging the filter medium at the top of the fitting surface formed in a bellows shape, and a concave portion for receiving the convex portion in the trough portion of the fitting surface. is there.

  Moreover, the filter of this invention provides the continuous or discontinuous groove part along the fitting surface of a molding frame.

  Moreover, the filter of this invention provides the rib which shares a fitting surface inside a molding frame with respect to the direction perpendicular | vertical to the ventilation direction of a filter.

  Moreover, the filter of this invention provides one or more intermediate | middle frames which can be fitted with the fitting surface of two molding frames, and fixes a some filter medium between the said two molding frames.

  Moreover, the filter of this invention comprises the above-mentioned intermediate frame and a plurality of filter media that are fixed between two molded frames by filter media having different functions.

  Further, the filter of the present invention is the same as the above-described plurality of filter media made of filter media having the same function.

  ADVANTAGE OF THE INVENTION According to this invention, the filter provided with the frame which hold | maintains the filter medium with a small manufacturing variation and a low defect rate of a molded article can be provided.

  The filter according to claim 1 of the present invention is a filter including a frame body that holds a filter medium, wherein the frame body is positioned on the outer periphery of the filter medium, and the frame body has two substantially identical shapes. The filter frame is formed by fitting the molded filter frame in the ventilation direction of the filter, and the filter medium is sandwiched and fixed between the fitting surfaces of the two molded frames, and the molded frame having the same shape is used. Thus, the production rotation of the molding machine and the carrying around of the parts are good, and by fixing the filter medium, it is possible to provide a filter having a frame body that holds the filter medium with a small manufacturing variation and a low defective rate of molded products.

  Further, the filter according to claim 2 is one in which the two forming frames are fixed with an adhesive, and the manufacturing variation can be reduced by fixing the forming frame and the filter medium by post-processing.

In addition, the filter according to claim 3 fixes the two forming frames by welding, and even if the material is not very excellent in adhesiveness, the frame can be constituted.

  Further, the filter according to claim 4, wherein the filter medium is configured by sandwiching a larger one than the outer shape of the molding frame into the molding frame and removing an excess portion, and can securely ensure an area to be fixed, Stable adhesion strength can be maintained.

  Further, the filter according to claim 5 is the filter according to any one of claims 1 to 4, wherein the shape of the fitting surface of the molding frame is formed in a bellows shape with respect to a direction perpendicular to the ventilation direction of the filter. Since the filter medium is arranged in a bellows shape in the frame, a large surface area can be secured and a filter having high collection efficiency can be obtained.

  The filter according to claim 6 is the filter according to claim 5, wherein the fitting surface of the molding frame is formed at an oblique angle with respect to a direction perpendicular to the ventilation direction of the filter. When the filter is arranged in a bellows shape, the fixing surface of the filter medium and the fitting surface of the molding frame are made substantially parallel so that the fixing area can be increased and the fixing strength can be improved. Since the extreme bending of the filter medium is alleviated, the filter medium can be prevented from being broken or deformed, and further, local deterioration due to secular change can be suppressed.

  The filter according to claim 7 is the filter according to claim 5, wherein a convex portion for engaging the filter medium is provided at the top of the fitting surface formed in an accordion shape, and a trough portion of the fitting surface is provided. The concave portion for receiving the convex portion is provided, and when each molding frame and the filter medium are fixed, the filter medium can be positioned by passing the convex portion through the filter medium, and two filter frames can be positioned. Also in the molding frame, the convex portion is received by the concave portion and positioning is performed, so that variation at the time of fixing can be reduced, and furthermore, the two molding frames are fixed even at the convex portion and the concave portion. Fixing strength can be improved.

  The filter according to claim 8 is the filter according to any one of claims 1 to 7, wherein a continuous or discontinuous groove is provided along the fitting surface of the molded frame, and each molded frame When adhering the filter media to the filter media with an adhesive, excess adhesive is absorbed by the groove, reducing the protrusion of the adhesive to the outer periphery of the frame, simplifying post-processing, and adhering to the groove When the agent enters, the adhesion area between the molding frame and the filter medium increases, and the adhesion strength can be improved.

  The filter according to claim 9 is the filter according to any one of claims 1 to 8, wherein the rib sharing the fitting surface is disposed inside the molding frame with respect to a direction perpendicular to the ventilation direction of the filter. Since it is provided and the fixing area of the molding frame and the filter medium can be increased by widening the fitting surface, the strength of the fixing portion can be improved.

  The filter according to claim 10 is the filter according to any one of claims 1 to 6, wherein one or more intermediate frames that can be fitted to the fitting surfaces of the two molding frames are provided, and the two moldings are provided. Multiple filter media are fixed between the frames. When replacing multiple filters, the entire frame can be removed and replaced. Compared to the case where one filter is installed at a time. Work can be done easily.

  The filter according to claim 11 is the filter according to claim 10, wherein a plurality of filter media are formed of filter media having different functions, and a multifunctional filter can be provided.

  Further, the filter according to claim 12 is the filter according to claim 10, wherein a plurality of filter media are formed of the same filter media, and the collection efficiency can be doubled.

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

(Embodiment 1)
As shown in FIGS. 1 and 2, in the filter of the present invention, the frame body 1 is formed in a cylindrical shape on the outer periphery of the filter medium 2, and the frame body 1 has two identical shaped molding frames 1a and 1b. And the filter is formed by sandwiching and adhering the filter medium 2 on the fitting surface between the molding frame 1a and the molding frame 1b.

  Moreover, the fitting surface of the molding frame 1a and the molding frame 1b is formed in a bellows shape with respect to the direction 3 perpendicular to the ventilation direction of the filter.

  The filter medium 2 is creased in advance so that it can be properly disposed on the fitting surface of the molding frame 1b.

  The molding frames 1a and 1b are preferably made of a thermoplastic resin such as ABS resin having excellent moldability, and the filter medium 2 is preferably made of a polyester non-woven fabric having a relatively good adhesive property. By adopting heat welding, even a material that is not very excellent in adhesiveness can be formed.

  The filter medium 2 may be a honeycomb fiber filter.

  The filter having the above-described configuration is obtained by placing the filter medium 2 with creases in advance on the molding frame 1b with the adhesive applied to the fitting surface, and pressing and adhering with the molding frame 1a with the adhesive applied on the fitting surface. Can be manufactured. Since the filter manufactured in this way requires only a small positional deviation of the filter medium 2, it is possible to obtain a filter with small manufacturing variation and stable quality.

  Moreover, if the filter medium 2 is made larger than the outer shape of the frame 1 and the excess part of the filter medium 2 is removed after bonding by using a cutter or a punching die, the finished appearance is good and the bonding area is ensured. Therefore, stable adhesive strength can be maintained, and there is no need to worry about displacement of the filter medium 2.

  In addition, as a method of constructing a filter having the same shape as that of the present embodiment, a method of applying an adhesive to the end surface of the filter medium 2 and bonding it to the inner surface of the resin frame is conceivable. The possibility of partial adhesion failure due to the shape of the end face of the filter medium 2 and the shape of the resin frame is very high, so the quality is considerably inferior.

  Moreover, as shown in FIG. 3 and FIG. 4, you may provide the continuous or discontinuous groove part 4 along the fitting surface of the molding frame 1c and the molding frame 1d.

  In this way, when the molding frames 1c, 1d and the filter medium 2 are bonded, excess adhesive 5 flows into the groove 4 as shown in FIG. 4, and the molding frames 1c, 1d and the filter medium 2 are separated. The substantial bonding area is increased, and an improvement in bonding strength can be obtained.

  Moreover, as shown in FIG. 5, you may provide the rib 6 which shares a fitting surface inside the molding frames 1e and 1f.

  If it does in this way, the adhesion area of molding frame 1e, 1f and the filter material 2 will increase, and the improvement of adhesive strength can be acquired.

  Further, the rib 6 may be provided with a groove, and in this way, the adhesive strength can be further improved.

  Further, as shown in FIG. 6, when the filter medium 2 is arranged in a bellows shape, it is provided at an oblique angle so that the adhesive surface of the filter medium 2 and the fitting surface of the molding frames 1g and 1h are substantially parallel. May be.

  In this way, compared to the case where the fitting surfaces of the molding frames 1g and 1h are formed in a direction orthogonal to the ventilation direction, the bonding area can be increased, the bonding strength can be improved, and the filter medium 2 can be improved. Is accordion-shaped, the extreme bending of the filter medium 2 is reduced in the vicinity of the adhesive surface, so that the filter medium 2 can be prevented from being broken or deformed, and further, local deterioration due to secular change can be suppressed. it can.

  Moreover, as shown in FIG. 7, the convex part 7 which latches the filter medium 2 may be provided in the top part of the fitting part formed in the bellows shape, and the recessed part 8 which receives this convex part 7 may be provided in a trough part. .

  If it does in this way, as shown in FIG. 8, the positioning of the filter medium 2 can be made more accurate by arranging the convex part 7 through the filter medium 2, and the molding frame 1i and the molding can be formed. Since positioning with respect to the frame 1j is also performed by receiving the convex portion 7 with the concave portion 8, it is possible to reduce variations during bonding, and adhesion between the molded frame 1i and the molded frame 1jb is achieved with the convex portion 7 and the concave portion 8. Therefore, the adhesive strength can be further improved.

(Embodiment 2)
As shown in FIG. 9, the difference from the first embodiment is that an intermediate frame 9 is provided between the molding frame 1k and the molding frame 1l, which can be fitted to the fitting surfaces of these molding frames 1k and 1l. The filter media 2a and 2b are arranged and bonded between the molding frames 1k and 1l and the intermediate frame 9, respectively. Other configurations are the same as those in the first embodiment, and the description thereof is omitted.

  The filter medium 2a is a non-woven filter for collecting pollen, and the filter medium 2b is an activated carbon filter for the purpose of deodorization, and is composed of filter mediums having different functions, and a molded frame 1k that holds the filter medium 2a, 2b. The integrated filter having two functions can be provided by 11 and the intermediate frame 9, and the filter adapted to the environment used becomes effective and functions.

By the way, in a filter provided in an air supply port or the like for taking in outside air, the more dust or the like is collected, the more air permeability is lost. Therefore, it is necessary to periodically replace the filter.

  When replacing a plurality of filters one by one, it takes time and labor for the operator, and there is a problem that the dust collected by the filter is scattered around and contaminated. If it is configured in such a manner, it is only necessary to remove and replace the entire frame, so that the replacement can be easily performed, and the frame can also serve as a tray for dust and the like, so that scattering to the surroundings can be reduced. .

  In addition, it is good also as filter-filter material 2a, 2b with the same function using the nonwoven fabric filter for collecting pollen for both filter-filter media 2a, 2b.

  In this way, two filter mediums 2a and 2b having the same function are stacked, so that the collection efficiency can be doubled and the filter can be selected as an effective filter in an environment where the concentration of dirt is high. it can.

(Embodiment 3)
As shown in FIG. 10, the difference from the first embodiment is that the molding frame 1m is composed of an inner ring 10m and an outer ring 20m, and the molding frame 1n is composed of an inner ring 10n and an outer ring 20n. It is formed in an annular shape, and the filter medium 2 is arranged in a bellows shape between the inner rings 10m, n and the outer rings 20m, n. Other configurations are the same as those in the first embodiment, and the description thereof is omitted.

  In the air supply port as shown in FIG. 11, the filter 13 of the present embodiment is disposed in the ventilation path between the main body 11 and the panel 12, and the inner side of the outer rings 20 m and 20 n is disposed between the main body 11 and the panel. 12 is required to have an opening for passing the shaft 14 through the filter medium 2, but in this case, if the periphery of the opening provided in the filter medium 2 is not retained, There may be a gap in the ventilation path due to contact with other parts at the time of replacement, etc., or damage due to contact with other parts. By holding the periphery of the opening provided in 2, it is possible to suppress such variations during replacement.

  Moreover, as shown in FIG. 12, the filter medium 2 may be arranged in a bellows shape along the outer peripheral surfaces of the inner rings 10o and 10p of the molding frames 1o and 1p.

  The filter of the present invention is used as a filter including a frame body that holds a filter medium used for the purpose of purifying removable air in a ventilation device, an air conditioner, a ventilation box, a supply / exhaust grill, a ventilation port, and the like. Useful.

The perspective view which shows the filter of Embodiment 1 of this invention. Exploded perspective view of the filter Partial sectional view showing the groove of the molding frame of the filter Partial sectional view showing the adhesive state of the filter Partial sectional view showing the adhesive state of the filter Partial sectional view showing the adhesive state of the filter The partial perspective view which shows the convex part and recessed part of the molding frame of the filter Side view showing the fitting state of the convex part and concave part of the molding frame The disassembled perspective view which shows the filter of Embodiment 2 of this invention. The disassembled perspective view which shows the filter of Embodiment 3 of this invention. Sectional drawing which shows the attachment state to the inlet of the filter Exploded perspective view showing arrangement of other shapes of filter medium of the same filter Front view of conventional filter

Explanation of symbols

1 Frame 1a Molded frame 1b Molded frame 1c Molded frame 1d Molded frame 1e Molded frame 1f Molded frame 1g Molded frame 1h Molded frame 1i Molded frame 1j Molded frame 1k Molded frame 1l Molded frame 1m Molded frame 1n Molded frame 1o Molded frame 1o Molded frame 1o Molded frame 1o Frame 2 Filter media 4 Groove 5 Adhesive 6 Rib 7 Protrusion 8 Recess 9 Intermediate frame 10m Inner ring 10n Inner ring 13 Filter 20m Outer ring 20n Outer ring

Claims (12)

A filter having a frame body for holding a filter medium, wherein the frame body is positioned on an outer periphery of the filter medium, and the frame body fits two substantially identical shaped frames in a ventilation direction of the filter. The filter is characterized in that the filter medium is sandwiched and fixed between the fitting surfaces of the two molding frames. The filter according to claim 1, wherein the two forming frames are fixed with an adhesive. The filter according to claim 1, wherein the two forming frames are fixed by welding. The filter according to any one of claims 1 to 3, wherein the filter medium is formed by sandwiching a filter medium larger than the outer shape of the molded frame and removing an excess portion. The filter according to any one of claims 1 to 4, wherein a shape of a fitting surface of the molding frame is formed in a bellows shape with respect to a direction perpendicular to a ventilation direction of the filter. The filter according to claim 5, wherein the fitting surface of the molding frame is formed at an oblique angle with respect to a direction perpendicular to the ventilation direction of the filter. 6. The filter according to claim 5, wherein a convex portion for engaging the filter medium is provided at a top portion of the fitting surface formed in a bellows shape, and a concave portion for receiving the convex portion is provided in a trough portion of the fitting surface. The filter according to any one of claims 1 to 7, wherein a continuous or discontinuous groove portion is provided along the fitting surface of the molding frame. The filter according to any one of claims 1 to 8, wherein a rib sharing the fitting surface is provided inside the molding frame with respect to a direction perpendicular to the ventilation direction of the filter. The filter according to any one of claims 1 to 6, wherein one or more intermediate frames that can be fitted to the fitting surfaces of the two molded frames are provided, and a plurality of filter media are fixed between the two molded frames. The filter according to claim 10, wherein the plurality of filter media are constituted by filter media having different functions. The filter according to claim 10, wherein the plurality of filter media are made of the same filter media.

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