JPH0824545A - Filter element and filter and filter attaching method - Google Patents

Abstract

PURPOSE:To provide a filter element and a filter of which a cushion material is not peeled off and damaged from the filter element and also the filter element is exchanged easily, and being a low production cost. CONSTITUTION:The filter element 2 is formed by bending an end of a filter material 22 and inserting a cushion material 21 between an end piece 225 and an adjacent piece 226 placed adjacent to the end piece 225. Also the filter 1 is composed of the filter element 2 formed by bending an end of the filter material 22 and a frame body 10 housing it. The frame body 10 has a sandwich part 100 for sandwiching the end piece 225, the cushion material 21 and the adjacent piece 226 in the filter element 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter element, a filter and a method of assembling a filter, which are used for filtering a fluid such as air filtration in various air conditioners.

[0002]

2. Description of the Related Art An air filter for removing dust, dirt, etc. contained in the air to be taken in is provided at the air intake of various air conditioners such as air conditioners and the like (FIGS. 7 and 8). As shown in FIGS. 10 and 11, the air filter 9 includes a frame body 90 and a filter element 95 housed in the frame body 90. The frame 90 is composed of a main body 901 and a lid 902. On the other hand, the filter element 95 is a corrugated plate formed by corrugating a sheet-shaped filter medium in a corrugated shape.

A filter medium plate 91 made of a thick non-woven fabric for reinforcement is adhered to an end piece 951 in the longitudinal direction of the filter element 95 with an adhesive, and both are made of metal and have a substantially U-shaped cross section. It is inserted in the holding member 96 in the shape of a circle. A cushion material 99 such as urethane foam is provided outside the holding member 96 and a part of the filter medium plate 91.

Further, the cushion material 99 is adhered and fixed to the holding member 96 and a part of the filter medium plate 91 with an adhesive. A support plate 92 for supporting the filter element 95 is provided between the end piece 951 and the adjacent piece 952 adjacent to the end piece 951. Also,
The filter medium plate 91 is pressed by the lid portion 902 and set in the main body portion 901.

Since the cushion member 99 elastically seals the space between the frame 90 and the filter element 95, it is possible to flexibly deal with the size difference due to individual differences of the filter element 95. is there. Therefore, it is possible to prevent air containing dust, dirt, etc. from passing through between the filter element 95 and the frame 90 and entering the inside of the air conditioner.

By the way, dust and the like accumulate in the filter element 95 with the passage of time, so that the flow of air at the air intake gradually deteriorates. Therefore, the filter element 95 is periodically replaced with a new one.

[0007]

However, the conventional air filter 9 described above has the following problems. That is, FIG.
As shown in, the cushion material 99 is in direct contact with the inner wall surface 900 of the main body 901. Therefore, the cushion material 99 is rubbed by the inner wall of the main body 901 every time the filter element 95 is replaced. Therefore, the cushion material 99 may be peeled off or damaged from the holding member 96.

It is also conceivable to directly fix the cushion material 99 to the filter element with a strong adhesive in order to prevent the above-mentioned peeling and damage of the cushion material 99. However, since the strong adhesive is expensive, the manufacturing cost of the air filter 9 becomes high.

In view of the above problems, the present invention provides a filter element, a filter, and a method for assembling the filter, in which the cushioning material is not peeled or damaged, and the filter element can be easily replaced and the manufacturing cost is low. Is what you are trying to do.

[0010]

According to the present invention, in a filter element in which a filter material has a bent end, the filter element has a cushioning material interposed between the end piece and an adjacent piece adjacent to the end piece. It is in the filtration element characterized by being formed.

The end piece and the adjacent piece form, for example, a trough portion having a V-shaped cross section at the end of the filter medium. The end piece and the adjacent piece are formed by cutting the filter medium to a desired length and bending the cut portion as it is. Further, the end piece may be formed by folding the cut portion and joining a plurality of the folds. In this case, the strength of the end piece is improved as compared with the end piece in which the cut portion is simply bent.

Next, the cushion material is provided in the valley between the end piece and the adjacent piece. In the case of the above-mentioned interposition, the cushioning material may be adhesively fixed to one of the terminal piece and the adjacent piece by using an adhesive. As the cushion material, an elastic body such as rubber, rubber foam, or foam resin such as urethane foam is used. Examples of the adhesive include acrylic resin and rubber resin.

Also, as the cushion material, a cushion material with a joining member having a joining member such as an adhesive tape may be used, and the cushion member may be adhered to the end piece or the adjacent piece by using the joining member. In this case, since the work of applying the adhesive is eliminated, the manufacturing of the filter element becomes easier. Examples of the cushion material with the joining material include commercially available urethane foam with an adhesive material,
A foamed rubber sheet with an adhesive material can be used. Since these are inexpensive, they are also preferable for reducing the manufacturing cost.

Further, on the side surface of the filter element, there is a portion where the cushion material partially contacts the frame body. For example, a cushion material having excellent strength is fixed to this portion with a strong adhesive as in the past (FIG. 2 (A)).

Next, as the filter material, materials such as non-woven fabric, electret paper and activated carbon fiber paper are used. The shape of the filtration element is appropriately determined according to its application. Generally, it is more preferable to provide the filter surface for filtering the fluid with irregularities to increase the filter area.
As the shape of the filtering surface having the irregularities, for example, as will be described later, a corrugated body obtained by folding a filter medium is preferable. As another shape, the filter surface may be flat (FIG. 9).

Next, a filter in which the above-mentioned filter element is assembled will be described. That is, in a filter including a filter element formed by bending the end of a filter medium and a frame housing the filter element, the filter element comprises:
A cushioning material is interposed between the end piece and an adjacent piece adjacent to the end piece, and the frame body holds the end piece and the adjacent piece in the filter element and the holding material for holding the cushioning material. There is a filter characterized by having a section.

The frame body is for accommodating and fixing the filter element. When the filter is actually installed in an air conditioner or the like, it has a role as a locking member for attaching to the other side.

Next, the sandwiching portion includes an inner wall of the frame body,
It is composed of a support member provided near the inner wall. The support member is, for example, a wedge-shaped protrusion provided along the inner wall of the frame. The height of the support member is preferably highest at the center in the width direction and lowest at both ends (FIG. 3). This makes it easy to remove and install the filter element from both ends when installing and removing the filter element.
The workability of replacing the filtration element is improved.

Next, a method of assembling the filter element in the above filter will be described. That is, a valley fold formed by the end piece and the adjacent piece is formed at the end portion, and a filter element provided with a cushion material between the end piece and the adjacent piece is provided at the end portion with the cushion material. A method of assembling to a frame having a narrow width holding part, wherein the valley fold part is inserted from the tip toward the holding part of the frame and the elastic force of the cushion material is used. There is a method of assembling a filter, characterized in that the end piece and the adjacent piece are brought into contact with the inner side surface of the holding portion and the filter element is assembled to the frame body. By the above assembling method, the filter element can be easily assembled to the frame body as in the above.

Next, it is preferable that the filter element is a wavy body that is uniform from one end to the other end, and the filter medium piece located at the end of the wavy body is the end piece. The corrugated body is formed by folding a sheet-shaped filter medium into a corrugated shape, and has peaks and troughs that appear alternately and repeatedly. The filter element is made of a corrugated body cut into a predetermined length, and the piece forming the valley portion is the end piece of the filter element in the cutting. The above-mentioned cushion material is provided in this valley. In the filter element having the above shape, it is not necessary to separately form the end piece by bending or the like. Therefore, the manufacturing process is simplified.

Next, in the corrugated filter element,
It is preferable to provide an adhesive for maintaining the shape of the corrugated body. This prevents the filter element from losing its shape due to the fluid pressure of the filtered fluid. The adhesive is made of, for example, a heat-fusible resin.

Next, it is preferable that the frame for accommodating the corrugated filter element is provided with an insert piece for maintaining the shape of the filter element. The insert piece has, for example, the same shape as the above-mentioned support member, and is provided, for example, in the central portion of the frame body. The insert piece is inserted into the peak portion of the filter element to prevent the filter element from losing its shape.

Further, in particular, in the frame body having the above-mentioned insertion piece,
When the filter element having the above-mentioned adhesiveness is assembled, the following effects are exhibited. That is, even if the filter element is assembled by mistakenly assembling the front and back sides with respect to the frame body, the filter element cannot be assembled because the insert and the insert piece interfere with each other. Therefore, it is possible to prevent erroneous assembly of the filter element.

[0024]

[Operation and effect] In the filter element of the present invention,
A cushion material is provided between the end piece and the adjacent piece. Therefore, when the filter element is housed in the frame to form a filter, the end piece contacts the inner wall of the frame body, and the cushion material inside the end piece does not directly contact the inner wall of the frame body. Therefore, peeling and damage of the cushion material do not occur. Therefore, when replacing the filter element,
Since it is not necessary to consider the peeling and damage of the cushion material, the replacement work becomes easy and the work efficiency improves.

Further, as described above, since there is no possibility that the cushion material is separated from the filter element, a strong, inexpensive and inexpensive adhesive can be used to bond the cushion material. In addition, it is possible to use commercially available urethane foam with an adhesive as a cushioning material. Therefore, the manufacturing cost of the filter element is reduced.

Further, in the above filter, since the end piece, the adjacent piece and the cushion material of the filter element are held by the holding portion of the frame body,
It has the same operation and effect as those of the above-mentioned filtration element. Also,
Also in the method of assembling the filter element, as described above, the filter element can be easily assembled to the frame.

As described above, according to the present invention, the cushioning material is not peeled or damaged from the filter element, the filter element can be easily replaced, and the manufacturing cost is low. A method can be provided.

[0028]

【Example】

Embodiment 1 A filter element according to an embodiment of the present invention, a filter using the same, and a method of assembling the filter will be described with reference to FIGS. The filter of the present invention is an air filter for an air conditioner, as will be described later. 1 and 2
As shown in FIG. 1, the filter 1 of this example includes a filter element 2 having a filter medium 22 having a bent end piece 225,
It is composed of a frame 10 that houses the filtration element 2.

The filtering element 2 includes the end piece 225 and an adjoining piece 226 adjacent to the end piece 225.
The cushion member 21 is interposed between the frame body 1 and
Reference numeral 0 has a holding portion 100 for holding the end piece 225, the cushion material 21, and the adjacent piece 226. The sandwiching portion 100 is narrower than the cushion material 21. The filter element 2 is a corrugated body obtained by corrugating the filter medium 22 in a corrugated shape, and the end of the corrugated body is the end piece 225.

Next, the filtering element 2 has a plurality of peaks 221 and valleys 222 alternately provided, and the end piece 225 and the adjacent piece 226 adjacent to the end piece 225.
A valley fold portion 224 is formed between and. Then, in the valley fold portion 224, the cushion material 21 is
25, it is interposed by an adhesive. The same effect can be obtained even if the cushion material 21 is provided on the adjacent piece 226 with an adhesive.

Further, as shown in FIG. 2A, the filter element 2 is provided with, for example, four adhesives 23 for maintaining the shape of the corrugated body. Further, a side cushion material 210 different from the cushion material 21 at the end is attached to the side surface 29 of the filter element 2. The cushion material is urethane foam or the like. Note that rubber, rubber foam, or the like can be used as the cushion material.

Next, as shown in FIGS. 1 to 3, the holding portion 100 of the frame body 10 is formed by the inner wall 101 of the frame body 10 and the support member 11. The support member 11 is a wedge-shaped protrusion provided parallel to the inner wall 101. The height of the support member 11 is the central portion 1
11 is the highest and both ends 112, 113 are the lowest (FIG. 3). Further, on the bottom surface of the frame body 10, reinforcing ribs 19 for holding the frame body 10 and preventing the filter element 2 from falling are provided.

Next, as shown in FIG. 4, an insertion piece 13 which is a wedge-shaped protrusion similar to the support member 11 is provided near the center of the frame body 10. The insert piece 13 is inserted into the mountain portion 223 of the filter element 2 from below.

Next, the assembling and removal of the filtration element 2 from the frame 10 will be described. First, as shown in FIGS. 5 and 6, the filter element 2 has a valley fold portion 224 between the end piece 225 and the adjacent piece 226 of the above-described filter medium 22 and the cushion material 21 is provided in the valley fold portion 224.
(FIG. 5) and the frame 10 (FIGS. 3 and 6) are prepared,

Then, as shown in FIG. 1, the valley fold portion 224 of the filtering element 2 is inserted from the tip thereof to the holding portion 1
00, and insert the end piece 225 into the frame 10.
The inner wall 101 inside is abutted. Next, by utilizing the elasticity of the cushion material 21, while pressing the end piece 225 toward the adjacent piece 226 side, the filter element 2 is assembled to the sandwiching portion 100 in the frame body 10. Further, when the filter element 2 is taken out from the frame body 10, both end portions 112 of the support member 11,
Remove the filter element 2 from one of 113 (FIG. 3).

Next, an air conditioner equipped with the filter 1 will be described with reference to FIGS. 7 and 8. As shown in FIG. 7, the filter 1 is provided as a filter device 85 provided in the air conditioner 8. The air conditioner 8 includes a case 84 through which air 800 as a fluid to be filtered passes, a blower 83 provided in the case 84, and a heat exchanger 8
2 and the filtering device 85. The filtering device 85 is provided upstream of the heat exchanger 82 and upstream of the blower 83, respectively. It should be noted that either one of the filtering devices 85 may be used.

As shown in FIG. 8, the filtering device 85 comprises a case 84 through which filtered air passes and the filter 1 mounted in the case 84. Filter 1 is case 8
4 is locked to the locking portion 841. In addition, filter 1
Can be replaced through a window formed in a part of the locking portion 841.

The air conditioner 8 has an outside air inlet 89 and an inside air inlet 88 as inlets for filtered air, and further has an outlet 81 for filtered air. The air is introduced from the outside air introduction port 89 or the inside air introduction port 88 by opening and closing the switching valves 891 and 892 for switching the inside and outside air, and is introduced into the fluid passage 80 of the case 84. The temperature of this filtered air is adjusted by the heat exchanger 82. On the way, particularly from the blower 83 to the upstream side of the heat exchange air 82 and the upstream side of the heat exchange air 82, the filter device 85 is reached, where it is filtered by the filter element 2 of the filter 1.

Next, the function and effect of this example will be described. In the filtration element 2 of this example, the end piece 2
25 and the adjacent piece 226 have a valley fold portion 224, and the cushion material 21 is provided in the valley fold portion 224. Therefore, when the filter element 2 is housed in the frame body 10 to form the filter 1, the cushion material 21 does not directly contact the inner wall 101 of the frame body 10. Therefore, the cushion material 21
No peeling or breakage occurs. Therefore, when the filter element 2 is replaced, it is not necessary to pay attention to the peeling and damage of the cushion member 21, so that the efficiency of the replacement work is increased and the replacement work is facilitated.

Further, as described above, since there is no possibility that the cushion material 21 is separated from the filter element 2, a strong, inexpensive and inexpensive adhesive can be used for bonding the cushion material 2. Therefore, the manufacturing cost of the filter element 2 is reduced.

Therefore, according to the present embodiment, there is provided a filter element, a filter and a method of assembling the filter, in which the cushioning material is not peeled or damaged from the filter element, the filter element is easily supported, and the manufacturing cost is low. Can be provided.

In addition, the filter element 2 of this embodiment is provided with an adhesive 23 in order to prevent the filter element from losing its shape due to the pressure of the air passing therethrough.
Further, the frame body 10 of this example is provided with an insertion piece 13. As a result, even if the filter element 2 is assembled in the wrong way and the front surface and the back surface are oppositely assembled to the frame body 10, the adhesive 23 and the charging piece 13 interfere with each other and the filter element 2 can be assembled. It will be impossible. Therefore, it is possible to prevent erroneous assembly of the filter element 2 to the frame body 10.

Example 2 As shown in FIG. 9, this example is a filtering element 3 having a shape different from that of Example 1. That is, this filter element 3
Is formed by bending an end of a sheet-shaped filter medium 32 to form an end piece 325, and a cushioning material 31 is provided between the end piece 325 and an adjacent piece 326 adjacent thereto. The sheet shape of the filter medium 32 is left as it is in the sheet shape except for the end piece 325 and the adjacent piece 326. This portion is the filtration surface 320 that performs filtration.

The cushion material 31 is a urethane foam with an adhesive tape cut into a predetermined length.
Adhesive tape is provided on the side surface 310. Since the urethane foam is a material that is generally commercially available, the manufacturing cost can be further reduced. In addition, it is also effective in reducing the number of manufacturing steps because an adhesive application step is not required.

[Brief description of drawings]

FIG. 1 is a sectional view of an end of a filter according to a first embodiment.

FIG. 2A is a front view and FIG. 2B is a cross-sectional view of the filter according to the first embodiment.

FIG. 3 is a perspective view of a frame body according to the first embodiment.

FIG. 4 is a partial cross-sectional view of the filter according to the first embodiment.

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

FIG. 6 is a partial cross-sectional view of the frame body according to the first embodiment.

FIG. 7 is an explanatory diagram of an air conditioner according to the first embodiment.

FIG. 8 is an explanatory diagram for assembling the air filter to the air conditioner in the first embodiment.

FIG. 9 is a developed perspective view of the filtration element according to the second embodiment.

FIG. 10 is a sectional view of an air filter in a conventional example.

FIG. 11 is a partial cross-sectional view of an air filter in a conventional example.

[Explanation of symbols]

 1. ． ． Filter, 10. ． ． Frame, 100. ． ． Holding part, 11. ． ． Support member, 2. ． ． Filter element, 21. ． ． Cushion material, 22. ． ． Filter material, 221,223. ． ． Yamabe, 222. ． ． Tanibe, 224. ． ． Valley fold, 225. ． ． End piece, 226. ． ． Adjacent piece,

Front page continuation (72) Inventor Sai Ninomiya 1-1, Showa-cho, Kariya city, Aichi prefecture

Claims (6)

[Claims] 1. A filter element formed by bending the end of a filter medium, wherein the filter element comprises a cushioning member interposed between the end piece and an adjacent piece adjacent to the end piece. And a filtration element. 2. The filter element according to claim 1, wherein the filter element is a corrugated body, and the terminal piece is formed at an end of the corrugated body. 3. A filter comprising a filter element formed by bending an end of a filter medium, and a frame housing the filter element, wherein the filter element comprises the end piece.
A cushioning material is provided between the end piece and an adjacent piece adjacent to the end piece, and the frame body has a holding portion for holding the end piece and the adjacent piece in the filtration element and the cushioning material. A featured filter. 4. The filter according to claim 3, wherein the filter element is a corrugated body, and the terminal piece is formed at the end of the corrugated body. 5. A filter element having a valley fold formed by an end piece and an adjacent piece formed at the end portion, and a cushioning material provided between the end piece and the adjacent piece, and the filter element at the end portion. A method of assembling to a frame body having a sandwiching portion having a width narrower than that of the cushion material, wherein the valley fold portion is inserted from the tip toward the sandwiching portion of the frame body, and the elastic force of the cushion material is increased. A method of assembling a filter, characterized in that the end piece and the adjacent piece are brought into contact with the inner wall surface of the sandwiching portion to assemble the filter element to the frame body. 6. The filter element according to claim 5, wherein the filter element is a wavy body that is uniform from one end to the other end, and the filter medium piece located at the end of the wavy body is the end piece. A method of assembling a filter characterized by: