JPH0819721A - Filter - Google Patents

Abstract

PURPOSE:To provide a filter in which the strength of an end part in the longitudinal direction of a filter medium is improved by a simple constitution. CONSTITUTION:In a filter 100 in which a filter medium 1 is folded in the longitudinal direction to make a wave shape, an end filter medium piece 10 positioned at the end in the longitudinal direction of the filter medium 1 and the adjacent filter medium piece are glued to each other. Preferably, the filter 100 has side end plates 5, which are extended in the longitudinal direction, on both end sides 15 in the width direction of the filter medium 1. The filter 100 is installed, for example, with a sealant 6 placed between the filter and a filter case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter formed by bending a filter material into a corrugated plate shape, and a filter device using the filter.

[0002]

2. Description of the Related Art As a filter for air filtration used in an air conditioner or the like, there is, for example, one in which a filter medium is bent into a corrugated plate shape. In such a filter, in order to maintain the shape of the filter medium, the filter medium has conventionally been fixed in the frame. As such a filter, for example, there is one in which a filter medium is adhered and fixed to a frame with a hot melt adhesive (Actual Kaihei 1-65628).
issue). In addition, a filter element is insert-molded in a resin frame without using an adhesive (Shokai Sho 63-82).
No. 416), etc.

[0003]

However, in each of the above conventional filters, a resin frame is provided in order to maintain the rigidity of the outer shape of the filter medium. For this reason, a resin mold and a molding machine for molding a resin frame are required, and there is a problem that the cost becomes high in terms of equipment depreciation cost and mold depreciation cost, especially when the number of production is small. Further, even when the frame body is used, when the corrugated plate-shaped filter medium is combined with the frame body, the filter medium piece at the end portion in the longitudinal direction of the filter medium may be deformed. In particular, when the corrugated plate-like filter material is replaceable, the deformation of the end portion may cause the fluid to be filtered to pass without being filtered.

In view of the above conventional problems, the present invention is to provide a filter in which the strength of the end portion in the length direction of the filter medium is increased by a simple structure, and a filter device using the filter.

[0005]

According to the present invention, in a filter formed by bending a filter medium in a corrugated plate shape in the length direction thereof, an end filter medium piece located at an end portion in the length direction of the filter medium and the end filter medium piece. And a filter element piece adjacent to the filter element are bonded to each other.

What is most noticeable in the present invention is that the end filter medium piece located at the end portion in the longitudinal direction of the filter medium and the adjacent filter medium piece adjacent to the end filter medium piece are adhered to each other. . In the present invention, the term "end filter medium piece" means a piece of filter medium located at both ends of the filter medium in the longitudinal direction. The end part means the last part in the length direction of the filter medium or the vicinity of the last part. A plurality of corrugated filter media pieces are disposed between both ends. The bending width of the end filter medium piece located at the end of the filter medium is preferably about the same as the bending width of the adjacent filter medium piece adjacent to the end filter medium piece (FIG. 3, FIG.
(See FIG. 14). As a result, the end filter medium piece and the adjacent filter medium piece are integrally overlapped with each other, and the strength of the end portion of the filter medium is improved.

The folding width W1 of the end filter medium piece and the adjacent filter medium piece is formed so that the final part of the filter medium ends at the valley end and the last filter medium piece is bent to be half the folding width W2 of the other filter medium pieces. Is advantageous in cost (see FIGS. 2 and 3). Further, when greater rigidity retention and sealability retention are required, the filter medium piece can be further increased by one piece and the final portion can be the mountain end (see FIGS. 13 and 14). Also, when the end filter media piece and the adjacent filter media piece are not formed at the final part of the valley end or the mountain end, but are formed near the last part, the same as when they are formed at the last part. The effect can be obtained (see FIG. 15).

Further, the final piece of the filter medium is wrapped inside,
This wrapped filter element piece can be used as an end filter element piece, and the end filter element piece and an adjacent filter element piece can be bonded to each other (FIG. 1).
0). In this case, at least the adhesive is filled between the one piece of the end filter medium piece and the adjacent piece of the filter medium. The enclosed central space can also be filled with an adhesive.
When the adhesive is filled, it is possible to secure more rigidity at the end portion. On the other hand, when the adhesive is not filled, the end portion retains elasticity. Therefore, this elastic force directly attaches the end to the filter case,
More sealing retention can be obtained. (Fig. 12
reference).

As the filter medium, for example, electret paper, activated carbon fiber paper, non-woven fabric, etc. are used. Examples of the adhesive include hot melt resin,
Use rubber, urethane, etc.

In the filter, it is preferable that side end plates are provided along both sides of the filter medium in the width direction along the length direction thereof. As a result, the rigidity of the entire filter medium in the longitudinal direction can be secured, and the filter can be attached to the case of the filtering device while maintaining the shape of the entire filter medium. In attaching the side end plate to the filter medium, for example, there is a method of using an adhesive member as the side end plate and adhering this to the side end portion of the filter medium. As the side end plate, for example, an adhesive material such as hot melt resin, rubber or urethane can be used.

The above filter can be used as an air filter in an intake system of an air conditioner engine, a gas filter for filtering various gases in a chemical device, or a filter for filtering liquids such as water and various liquids. it can.

Next, as a filtering device using the above filter, for example, in a filtering device in which a filter is mounted in a case through which filtered fluid passes, the filter is
An adhesive is formed by bending a filter medium in a corrugated plate shape in the lengthwise direction thereof, and adhering an end filter medium piece located at a terminal end in the lengthwise direction of the filter medium and an adjacent filter medium piece adjacent to the end filter medium piece. There is a filtration device characterized in that they are adhered to each other.

In the above filtering device, the filter is
It is preferable to attach it to the case with a sealing material interposed. This keeps the shape of the entire filter,
Can be attached to the case. Further, since the strength of the filter is improved, the filter is not damaged even when the pressure of the fluid is applied.

The above-mentioned sealing material makes the filter adhere to the case. As the sealing material, one having elasticity such as foam material is used, and this sealing material is provided on the entire circumference of the filter. In this case, the elasticity of the sealing material fixes the filter to the case. Further, it is preferable that the sealing material is expandable and contractable and can be arbitrarily changed in shape. As a result, one type of sealing material can be used for filters of various shapes. Even if the sealing material is not formed according to the shape of the filter, the elastic sealing material can change its shape freely according to the shape of the filter. it can.

[0015]

In the filter of the present invention, the end filter medium piece located at the end portion in the longitudinal direction of the filter medium and the adjacent filter medium piece adjacent to the end filter medium piece are adhered to each other. Therefore, it is possible to give rigidity to the end portion of the filter medium.
Therefore, even when a pressing force in the length direction or the width direction is applied to the filter medium, the end portion of the filter medium is not deformed. Also,
In the filtering device of the present invention, the filter is attached to the case. As described above, the filter has rigidity at its longitudinal end. Therefore, the filter can be attached to the case without damaging the end portion.

According to the present invention, it is possible to provide a filter in which the strength of the end portion in the length direction of the filter medium is increased by a simple structure, and a filter device using the filter.

[0017]

【Example】

Example 1 FIGS. 1 to 5 show a filter according to an example of the present invention.
Will be explained. As shown in FIGS. 1 and 2, the filter of the present example is obtained by bending the filter medium 1 in a corrugated plate shape in its length direction. As shown in FIG. 3, the end filter medium piece 10 located at the end portion 2 in the longitudinal direction of the filter medium 1 and the end filter medium piece 1
0 and the adjacent filter medium piece 11 adjacent to each other are adhered to each other by the hot-melt adhesive 3 having a thickness of several millimeters.

The end filter medium pieces 10 are located at both ends in the length direction of the filter 100, and corrugated plate-like filter medium pieces 19 are located between the both end filter medium pieces 10. The bending width W1 between the end filter medium piece 10 and the adjacent filter medium piece 11 is, for example, 1 cm. The bending width W2 of the other wavy filter material piece 19 is, for example, 2 cm. As shown in FIG. 1, the side end portions 15 on both sides in the width direction of the filter medium 1 are provided with side end plates 5 along the length direction thereof.
Is provided. A sealing material 6 is provided on the entire circumference of the filter 100. As the sealing material 6, a foam having elasticity is used.

Next, a method of manufacturing the filter 100 will be described. First, a flat plate-shaped filter medium wound in a roll shape is bent into a corrugated plate shape and cut into a required number of peaks so that the final piece of the filter medium becomes a valley end. Next, as shown in FIG. 3, the final piece of the filter medium at both ends in the length direction of the filter medium piece 1 is folded in half, and the tip piece thereof is used as the terminal filter medium piece 10. Let's say piece 11. Next, the hot melt adhesive 3 is filled between the end filter medium piece 10 and the adjacent filter medium piece 11 adjacent to the end filter medium piece 10.

Next, as shown in FIG. 1, the side ends 15 on both sides in the width direction of the filter medium piece 1 are filled with the hot melt adhesive 3 and molded into a flat plate to form a side end plate 5. . As a result, the above-mentioned filter 1 in which the filter medium is composed only of the adhesive agent
00 is obtained. The side end plate 5 may be formed by adhering a filter material to another plate member. Then filter 100
A sealing material 6 such as a sponge is attached to the entire circumference of.

As shown in FIG. 4, the filter 100 is provided as a filtering device 95 provided in the air conditioner 9 for a vehicle. The air conditioner 9 includes a case 94 through which air as a fluid to be filtered passes, and a blower 93 provided therein.
And a heat exchanger 92 and the filtering device 95. The filtration device 95 is provided upstream of the heat exchanger 92 and upstream of the blower 93, respectively. It should be noted that the filtering device 95 may have either one.

As shown in FIG. 5, the filtering device 95 comprises a case 94 through which filtered air passes, and the filter 100 mounted in the case 94. Filter 100
Is locked to a locking portion 941 formed in a groove shape on the wall surface of the case 94 with the sealing material 6 interposed. The filter 100 can be replaced through a window formed in a part of the locking portion 941.

The air conditioner 9 has an outside air introduction port 99 and an inside air introduction port 98 for introducing filtered air,
Further, it has an outlet 91 for filtered air. The air is
By opening / closing the switching valves 991 and 992 for switching inside / outside air, it is introduced from the outside air introduction port 99 or the inside air introduction port 98,
It is introduced into the fluid passage 90 of the case 94. The temperature of this filtered air is adjusted by the heat exchanger 92. On the way,
In particular, it reaches the filtering device 95 from the blower 93 on the upstream side and on the upstream side of the heat exchanger 92, where it is filtered by the filter medium 1 of the filter 100.

Next, the function and effect of this example will be described.
In the filter of this example, as shown in FIG.
The end filter medium piece 10 in the length direction and the adjacent filter medium piece 11 adjacent to the end filter medium piece 10 are adhered to each other. Therefore, the end portion 2 of the filter medium 1 can have rigidity. Therefore, even if a pressing force is applied to the filter medium 1 from the length direction or the width direction, the end portion 2 of the filter medium 1 is not deformed.

Further, as shown in FIG. 1, the filter 100 is provided with side end plates 5 at the side end portions 15 on both sides in the width direction of the filter medium 1 along the length direction thereof. Therefore, filter medium 1
The rigidity in the length direction can be secured. Further, as described above, the end portion of the filter medium 1 has rigidity by adhering two adjacent filter medium pieces through an adhesive. Therefore, the rigidity of the entire filter 100 can be ensured by the rigidity of the end portion 2 and the rigidity of the side end plate 5.

Furthermore, in this embodiment, since the final piece of the filter medium, which is one piece of the filter medium bent at a uniform pitch, is further folded to form the end filter medium piece and the adjacent filter medium piece, the manufacturing process is simple and the filter medium is simple. You can reduce waste. In order to reduce costs, it is preferable that the bending width W1 of the last filter medium piece is half the bending width W2 of the other filter medium piece 19.

Next, in the filtering device 95 of this embodiment, as shown in FIG.
00 is directly attached to the case 94. The end portion 2 of the filter 100 has rigidity as described above. Therefore, the filter 100 can be attached to the case 94 without providing a reinforcing member such as a special frame at the end portion. In addition, the filter 100 includes the sealing material 6
It is attached to the case 94 with the intervening. for that reason,
The required sealability and vibration resistance can be obtained.

Embodiment 2 As shown in FIGS. 6 to 8, the filter 101 of this embodiment is such that the filter of Embodiment 1 described above is directly attached to the case 94 of the filtering device 95 without using a sealing material. is there. The filter 101, as shown in FIG.
Side end plates 5 are provided at the side end portions 15 on both sides of the side end plate 15. Filter medium 1
As shown in FIGS. 7 and 8, the end portion in the length direction of is directly contacted with and locked by the locking portion 941 of the case 94. Others are the same as in the first embodiment.

In the present embodiment, the filter 101 provides sufficient rigidity by the joining of the end filter medium pieces 10 and the adjacent filter medium pieces at both end portions 2 of the filter medium and the side end plates at both side ends of the filter medium. To be Therefore, the filter 101 can be attached to the case 94 while maintaining the overall shape of the filter medium 1. Also in this example, the same effect as that of the first embodiment can be obtained.

Embodiment 3 In the filter 102 of this embodiment, as shown in FIGS. 9 to 11, the end filter medium pieces 10 located at both end portions 2 in the length direction of the filter medium 1 are folded back in the middle, It is wrapped inside. That is, as shown in FIG. 10, the end filter medium piece 1
0 is the first piece 12 folded inward and the first piece 12
And a second piece 13 located outside the. The first piece 12 and the second piece 13 face each other. First piece 12
Faces the adjacent filter medium piece 11 on the opposite side of the second piece 13. The adjacent filter medium piece 11, the first piece 12, and the second piece 13 are adhered to each other via the hot melt adhesive 3. The side end portion 15 of the filter medium 1 is provided with a side end plate as in the first embodiment (not shown). Others,
This is the same as in the first embodiment.

In the filter 102 of this example, as shown in FIG.
As shown in FIG. 5, the end filter medium piece 10 of the filter medium 1 is wound inside, and the hot melt adhesive 3 is filled between the respective filter medium pieces. Therefore, the filter 102 of the present example has higher rigidity at the end portion than that of the first embodiment. Therefore, like the filter 101 of the second embodiment, it is possible to directly attach the filter device 95 to the case 94 without using a sealing material.
However, if a greater sealing property is required, the sealing material 6 may be attached to the case 94 of the filtering device 95 as shown by the broken line in FIG. Also in this example, the same effect as that of the first embodiment can be obtained.

Embodiment 4 As shown in FIG. 12, the filter 103 of this embodiment is different from the above-mentioned Embodiment 3 in that the center of the winding portion at the end of the filter medium 1 is not filled with an adhesive. That is, the adhesive 3 is not filled between the first piece 12 and the second piece 13, but the adhesive 3 is filled only between the first piece 12 and the adjacent filter medium piece 11. Others are the same as in the third embodiment.

In the filter 103 of this example, the filter medium 1
Since the central portion 120 of the winding portion at the end of is not filled with the adhesive, the central portion not filled with the adhesive retains elasticity. Therefore, this elastic force enhances the sealing property, and the filter 103 can be directly attached to the case 94 of the filtering device. In this embodiment, the same effects as those of the third embodiment can be obtained.

Embodiment 5 In the filter 104 of this embodiment, as shown in FIGS. 13 and 14, the bending widths of the corrugated filter medium 1 are all about the same. That is, the bending width W1 between the end filter medium piece 10 of the filter medium 1 and the adjacent filter medium piece 11 adjacent to the end filter medium piece 10
Is about the same as the bending width W2 with the corrugated plate-shaped filter medium piece 19. The filter 104 is directly attached to the filter medium device without using a sealing material. Others are the same as those in the second embodiment.

In the filter 104 of the present example, the bending width W1 between the end filter medium piece 10 and the adjacent filter medium piece 11 located at the end portion 2 is about the same as the bending width W2 with the filter medium piece 19, and Great effect of holding rigidity and maintaining sealing property can be expected. Also in this example, the same effect as that of the second embodiment can be obtained.

Example 6 As shown in FIG. 15, the filter 105 of this example has a first filter medium piece 101 and a second filter medium piece 10 each having two terminal filter medium pieces 10.
It consists of 2. The first filter medium piece 101 is the last filter medium piece in the length direction of the filter medium, and the second filter medium piece 102 is the first filter medium piece 10 described above.
1 is a filter medium piece adjacent to the first and second filter medium pieces 10
1, 102 form a valley.

The space between the second filter medium piece 102 and the adjacent filter medium piece 11 is filled with the hot melt adhesive 3. No hot melt adhesive is filled between the second filter medium piece 102 and the first filter medium piece 101. First filter medium piece 101, second
Bending width W1 of the filter medium piece 102 and the adjacent filter medium piece 11
Is about the same as the bending width W2 of the other filter medium pieces 19.
Others are the same as in the first embodiment. Also in this example, the same effect as that of the first embodiment can be obtained.

Embodiment 7 As shown in FIG. 16, the filter 101 of this embodiment is mounted in a frame body 20 having the same size as the outer shape of the filter 101. The frame body 20 is locked by a locking portion 941 formed in a groove shape on the wall surface of the case 94 of the filtering device. Others are the same as in the first embodiment. In this example, since the overall rigidity of the filter 101 is high, the filter 101 can be attached to the frame body 20 while maintaining the overall shape of the filter 101. Further, the lengthwise end portion 2 of the filter medium 1 is not deformed. Other than that, the same effects as those of the first embodiment can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a filter according to a first embodiment.

FIG. 2 is a perspective view of the filter medium according to the first embodiment.

FIG. 3 is a sectional view of the filter according to the first embodiment.

FIG. 4 is an explanatory diagram of the air conditioner according to the first embodiment.

FIG. 5 is an explanatory cross-sectional view of the filtration device according to the first embodiment.

FIG. 6 is a perspective view of the filter according to the second embodiment.

FIG. 7 is an explanatory diagram of a filtration device according to a second embodiment.

FIG. 8 is an explanatory diagram showing a filter mounting method according to the second embodiment.

FIG. 9 is a perspective view of the filter according to the third embodiment.

FIG. 10 is a cross-sectional view of the filter according to the third embodiment.

FIG. 11 is an explanatory diagram showing a method of mounting the filter according to the third embodiment.

FIG. 12 is an explanatory view showing a filter mounting method according to the fourth embodiment.

FIG. 13 is a perspective view of the filter according to the fifth embodiment.

FIG. 14 is a sectional view of a filter according to a fifth embodiment.

FIG. 15 is a cross-sectional view of the filter according to the sixth embodiment.

FIG. 16 is an explanatory diagram of a filter mounted in a frame body according to the seventh embodiment.

[Explanation of symbols]

1. ． ． Filter media, 10. ． ． Terminal filter medium piece, 11. ． ． Adjacent filter media piece, 15. ． ． Lateral end, 19. ． ． Filter material pieces, 100, 101, 102, 103, 104, 10
5. ． ． Filter, 2. ． ． Terminal part, 3. ． ． Adhesive, 5. ． ． Side end plate, 6. ． ． Sealing material, 9. ． ． Air conditioner, 94. ． ． Case, 95. ． ． Filtration device,

Claims (5)

[Claims] 1. A filter formed by bending a filter medium into a corrugated plate shape in the length direction thereof, and an end filter medium piece located at an end portion in the length direction of the filter medium, and an adjacent filter medium adjacent to the end filter medium piece. A filter characterized in that one piece and the other are adhered to each other. 2. The filter according to claim 1, wherein the filter has side end plates extending along the lengthwise direction at side ends on both sides in the width direction of the filter medium. The filter to do. 3. A filtering device comprising a filter mounted in a case through which a filtered fluid passes, wherein the filter comprises:
An adhesive is formed by bending a filter medium in a corrugated plate shape in the lengthwise direction thereof, and adhering an end filter medium piece located at a terminal end in the lengthwise direction of the filter medium and an adjacent filter medium piece adjacent to the end filter medium piece. A filtration device characterized in that they are adhered to each other. 4. The filtration device according to claim 3, wherein the filter has a sealing material interposed between the filter and the case. 5. The filter according to claim 3, wherein the filter has side end plates extending along the length direction at both side ends in the width direction of the filter medium. A filtration device characterized by: