JPH07112107A - Filter with edge, filter frame and structure for mounting filter with edge to filter frame - Google Patents

Abstract

PURPOSE:To save the handling time for attachment and detachment of a filter with edge and to greatly reduce the exchange working time by receiving an edge part with an L-shaped cross-section provided on both end parts of the filter with edges by a recessed part provided on left and right inside faces in the upperstream side of the filter frame with edges. CONSTITUTION:The edge part 13 is a projecting strip with an L-shaped cross-section provided at both end parts of the filter 11 and is made of a sheet material having rigidity. The edge part 13 is provided so that the tip is faced to the upperstream side, when the filter 11 is attached to the filter frame 14. Namely, since the tip of the edge part 13 is faced to the upperstream side, a hook part 13a is provided at the tip of the edge part 13 and by hooking the hook part 13a into the recessed part 15 provided on the left and right inside faces in the upperstream side of the filter frame 14, it is fixed to the filter frame 14. Also since the edge part 13 can be fixed by holding it between them when a prefilter frame is fixed to the filter frame, the handling time for attachment and detachment of the filter is saved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter with ears, a filter frame, and a structure for mounting the filters with ears on the filter frame. In detail, it is possible to handle the filter alone, and it is easy to attach and detach to the filter frame.
Moreover, a filter with ears that can reliably prevent air leakage,
The present invention relates to a structure for mounting a filter frame and a filter with ears on the filter frame.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
As shown in FIG. 6, the filter 1 is handled in a form (unit type filter) joined and integrated with the filter frame 2 for the purpose of protecting the filter 1 from vibration during transportation or replacement.

However, the filter frame uses a 9 mm thick hill and a steel plate having a thickness of 1 mm, and its weight is 6 to 15 kg, which is heavy when it is joined and integrated with the filter. Requires a great deal of labor and time for replacement work and transportation work.

Further, when discarding a filter that is joined and integrated with a filter frame, a filter using a steel plate as a frame does not burn, and even a filter using plywood has a nail or a tacker for fixing the filter. Since fixing tools such as the above are used, there is a trouble that they must be separated from the filter and disposed of separately.

Further, when the filter frame is handled in a form integrally joined to the filter frame, the service life of the filter frame is 10 years.
-Although it is 15 years, the limit of filter usage is 6-
Since it was 24 months, the replacement was done according to the filter's usage limit, and it was necessary to take a very wasteful response that even the filter frame that was fully usable was discarded together with the filter. .

Further, since the filter frame is made of plywood or steel plate and cannot be reduced in volume, the filter frame is transported as a box, and a large space must be secured accordingly.

Therefore, as a filter capable of solving the drawbacks such as poor handleability, complicated disposal, and inability to reduce the volume in the conventional filter integrally joined with the filter frame, the top and bottom parts of the filter are made of plastic or non-woven fabric. There has also been proposed a product which addresses the above-mentioned problems by being reinforced with a filter so that it can be handled only by a filter.

However, in this filter,
As shown in FIG. 7, the filter 1 itself does not have sufficient strength and is deformed by the wind pressure during use, and a gap is formed between the filter frame 2 and the filter frame 2 to easily cause an air leak. .

The present invention has been made in view of the above circumstances, and only the filter can be handled alone.
An object of the present invention is to provide a filter with ears, which can be easily attached to and removed from the filter frame, and can reliably prevent air leakage, and a structure for mounting the filter with ears on the filter frame.

[0010]

To achieve the above object, the invention according to claim 1 is characterized in that both ends of the folded filter are provided with ears having an L-shaped cross section. The filter was the gist.

The gist of the invention according to claim 2 is a filter with ears, characterized in that a hook is provided at the tip of the ears having an L-shaped cross section.

A third aspect of the present invention is a filter frame for accommodating a filter with ears, in which ears having a L-shaped cross section are provided at both ends of a folded filter. The gist of the filter frame is characterized in that a side surface is provided with a concave portion for receiving the ear portion of the ear filter.

The invention according to claim 4 has as its gist a filter frame characterized in that a bank portion is provided on the inner upper and lower surfaces on the downstream side of the filter frame so as to correspond to the folded shape of the ear filter.

According to a fifth aspect of the present invention, there is provided a selvage filter having ears having a L-shaped cross section at both ends of the folded filter, and the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame are the selvage filters. The gist is the structure for mounting the filter with ears on the filter frame, which is characterized by being mounted by receiving the ears of the.

According to a sixth aspect of the present invention, there is provided a selvage filter having selvages having an L-shaped cross section at both ends of the filter. The selvage filter is provided on the inner upper and lower surfaces on the downstream side of the filter frame so as to correspond to the folded shape of the selvage filter. Mounting on the filter frame of the selvage filter, wherein the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame are attached by receiving the selvages of the selvage filter. The structure is the gist.

According to a seventh aspect of the present invention, there is provided a selvage filter having selvage L-shaped ears on both ends of the folded filter, and the ears of the selvage filter are provided on the left and right side surfaces upstream of the filter frame. The attachment structure of the selvage filter to the filter frame is characterized in that it is attached by being sandwiched by a pre-filter frame.

According to an eighth aspect of the present invention, an ear filter having L-shaped ears on both ends of the filter is provided on the inner upper and lower surfaces on the downstream side of the filter frame so as to correspond to the folded shape of the ear filter. The ear filter is attached to the filter frame by sandwiching the ear portion of the ear filter with a pre-filter frame on the left and right side surfaces of the filter frame upstream side. The structure is the gist.

[0018]

In the filter with ears 1 according to the present invention, the ears 13 having an L-shaped cross section provided at both ends of the filter 11 are provided in the filter frame 1.
4 The filter frame 14 is mounted by being received by the recesses 15 provided on the left and right inner side surfaces on the upstream side.

In this filter with ears 11, the ears 13 having an L-shaped cross section provided at both ends of the filter 11 are provided in the filter frame 1.
4 The filter frame 14 is also attached by being sandwiched by the pre-filter frames 17 on the left and right side surfaces on the upstream side.

In the filter with ears 11 according to the second aspect, the hook portion 13a provided at the tip of the ears 13 having an L-shaped cross section is hooked in the recesses 15 provided on the left and right inner side surfaces on the upstream side of the filter frame 14, It is adapted to be attached to the filter frame 14.

In the filter frame 14 according to claim 3, the recesses 15 provided on the left and right inner side surfaces on the upstream side of the filter frame 14 receive the ears 13 of the filter with ears 11, so that the wind pressure applied to the downstream side during operation is increased. On the other hand, both ends of the filter 11 are stably supported.

In the filter frame 14 according to claim 4, when the filter 11 is attached to the filter frame 14, a bank portion provided on the inner upper and lower surfaces on the downstream side of the filter frame 14 corresponding to the folded shape of the selvage filter 11. The filter 16 is in contact with the downstream side of the filter 11, and the bank 11 holds the folded shape of the filter 11 and supports the filter 11 on the downstream side.

In the structure for mounting the selvage filter to the filter frame according to the fifth aspect, the selvage portion 13 of the selvage filter 11 is provided.
And a recess 15 provided on the left and right inner side surfaces on the upstream side of the filter frame 14.
The filter 11 can be attached by receiving.

In the structure for mounting the selvage filter to the filter frame according to the sixth aspect, the selvage portion 13 of the selvage filter 11 is provided.
And a recess 15 provided on the left and right inner side surfaces on the upstream side of the filter frame 14.
When the filter 11 is attached to the filter frame 14, the both ends of the filter 11 are supported on the upstream side by receiving the filter 11 and the filter 11 is provided on the inner upper and lower surfaces on the downstream side of the filter frame 14 so as to correspond to the folded shape of the selvage filter 11. The bank portion 16 comes into contact with the downstream side of the filter 11, and the filter 11 is held in the folded shape by the bank portion 16 and supported on the downstream side.

In the structure for mounting the selvage filter to the filter frame according to the seventh aspect, the ear portion 13 of the selvage filter 11 is sandwiched between the prefilter frame 17 on the right and left side surfaces on the upstream side of the filter frame 14. It can be attached.

In the structure for mounting the selvage filter to the filter frame according to the eighth aspect, the ear portion 13 of the selvage filter 11 is sandwiched between the prefilter frame 17 on the left and right side surfaces on the upstream side of the filter frame 14. Both ends of the filter 11 are supported on the upstream side, and the filter 11 is attached to the filter frame 14
When the filter 11 is attached to the filter 11, the bank portion 16 provided on the inner upper and lower surfaces on the downstream side of the filter frame 14 corresponding to the folded shape of the selvage filter 11 comes into contact with the downstream side of the filter 11. The bank portion 16 holds the folded shape and is supported on the downstream side.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The ear filter, the filter frame and the structure for mounting the ear filter to the filter frame according to the present invention will be described in detail below with reference to the drawings. The selvage filter of the present invention is obtained by folding a filter material having a shape-retaining property such that the shape after folding such as non-woven fabric, paper or glass fiber paper which has been conventionally used is not easily collapsed into a predetermined folding shape. Is. For example, it is possible to cite pleats only, or pleats (primary folding) and then W-shaped (secondary folding) to increase the surface area.

In the structure shown in FIG. 1, a nonwoven fabric 12 having a U-shaped cross section is bonded to the top and bottom of the pleated filter medium N, and
The non-woven fabric 12 is formed into a mold by alternately leaving one bent piece at predetermined intervals, and the one shown in FIG.
While cutting the pleated filter media N to a specified size,
Reinforcing bands 18 made of a non-woven fabric or a plastic plate are adhered alternately to the widthwise ends of each cut filter medium N. The filter 11 of FIG. 1 has a bent piece that is not cut for each cutting unit as a hinge and the cut side opens and closes.
The filter 11 of FIG. 2 can be handled by opening and closing the reinforcing band 18 as a hinge for each cutting unit, and folding it in a small size apart from the filter frame. The filter 11 is not limited to the one shown in FIGS. 1 and 2, but is a conventional pleated filter medium bent into a W shape, and a nonwoven fabric or a plastic plate is attached to the top and bottom of the filter. Anything that retains the double zigzag shape may be used.

The ear portion 13 is a protruding piece having an L-shaped cross section provided at both ends of the filter 11, and its shape is not easily collapsed by wind pressure during use or external force applied during handling, such as non-woven fabric or plastic plate impregnated with resin. A sheet material having a degree of rigidity is used as a material. As shown in FIG. 3 and FIG. 4, when the filter 11 is attached to the ear portion 13, as shown in FIG. 3 and FIG. Some are provided so as to face the upstream side.

In the case where the tip of the ear portion 13 is provided so as to face the downstream side, for example, as shown in FIG. 3, a concave portion 15 formed of a slit-shaped groove is provided on the left and right inner side surfaces on the upstream side of the filter frame 14, The end of the filter 13 is attached by inserting the tip of the ear 13 into the recess 15, and the recess 15 having a wide bottom surface is provided on the left and right inner side surfaces on the upstream side of the filter frame 14. The tip of the ear portion 13 is hooked on the rising surface of the filter 11 so that the end portion of the filter 11 is attached. The tip of the ear portion 13 is bent to have a U-shaped cross section. An example is one in which the tip of 13 is fitted in a recess 15 also having a U-shaped cross section so as to be attached to the filter frame 14.

Further, as an example in which the tip of the ear portion 13 is directed to the upstream side, for example, as shown in FIG. 5, a hook portion 13a is provided at the tip of the ear portion 13 and the hook portion at the tip of the ear portion 13 is provided. 13a may be attached to the filter frame 14 by hooking 13a into recesses 15 having a V-shaped or U-shaped cross section provided on the left and right inner side surfaces on the upstream side of the filter frame 14. it can.

In this way, the ears 13 are replaced by the filter frame 14
When the filter 11 is attached to the end portion of the filter 11 and attached to the end portion of the filter 11, the filter 11 is pushed to the downstream side by the wind pressure during operation, and the ear portion 13 at the end portion of the filter 11 is The force causes the inner wall of the concave portion 15 to come into close contact with the inner wall of the concave portion 15, and a gap is less likely to be formed between the both ends of the filter 11 and the filter frame 14, thereby preventing air leak.

The ear 13 is joined to the end of the filter 11 with an adhesive, and a hot melt resin is applied to the ear and / or the end of the filter, and the two are integrated by heating and pressing. You may make it into. By providing the ears 13 at both ends of the filter, the both ends of the filter are also reinforced at the same time, and the problem that the filter is damaged during handling hardly occurs.

The ears 13 may be provided over the entire length of the filter end. In this case, when the recess 15 having a length corresponding to the ear portion is provided on the left and right inner side surfaces on the upstream side of the filter frame 14 and is received by this, the space between the filter end and the left and right inner side surfaces on the upstream side of the filter frame is formed. It will be completely blocked by the ears, and the occurrence of air leaks will be prevented more reliably.

As shown in FIG. 3, the filter frame 14 is for accommodating the selvage filter 11 inside the frame 14, and the outer shape thereof is box-shaped, and the downstream side thereof is W-shaped to match the shape of the filter. Any of these may be used. In addition, the material is not particularly limited, and may be made of wood, iron, plastic, or the like. Recesses 15 for receiving the ears 13 of the ear filter 11 are provided on the left and right inner side surfaces on the upstream side of the filter frame 14.

The concave portion 15 is the ear portion 1 of the ear-attached filter 11.
It receives 3 and holds it so that it does not come off easily. As a preferable mode, the filter 11
Depending on the shape of the ears, the one having a slit-shaped groove into which the tip of the ear 13 is inserted as shown in FIG. 3, and the hook 13a provided at the tip of the ear 13 as shown in FIG. Having a V-shaped or U-shaped cross-section, having a wide bottom surface so that the tip of the ear portion 13 is caught by the rising surface thereof, and the ear portion 13 having a U-shaped cross-section
There may be mentioned, for example, one having a U-shaped cross-section corresponding to the tip and having the tip of the ear portion 13 fitted therein. The concave portion shown in FIG. 5 is the hook portion 13 at the tip of the ear portion 13.
Since it suffices that a can be hooked, the shape thereof may be a slit-shaped groove other than the shape shown in FIG. Then, the ear portion 13 of the ear-attached filter 11 is inserted, hooked, or fitted into the recess 15 to be received, so that the filter 11 is stably supported against wind pressure applied to the downstream side during operation. Will be available.

A bank portion 16 is provided on the upper and lower inner surfaces on the downstream side of the filter frame 14 so as to correspond to the folded shape of the ear filter 11. The bank portion 16 is shown in FIGS.
In the double zigzag type corresponding to the double zigzag fold shape of the ear filter 11 shown in FIG. 1, when the filter 11 is attached to the filter frame 14,
The downstream side of the filter 11 contacts the bank portion 16,
The folded shape is maintained and supported downstream.

In the embodiment shown in FIG. 3, both ends of the filter 11 are supported by the filter 11 receiving the ears 13 in the recess 15 of the filter frame 14 on the upstream side, and the bank 16 on the downstream side of the filter 11 on the downstream side. However, the filter 11 may be supported only on the upstream side.

Further, the size of the bank portion of the filter frame 14,
The height and the like are not particularly limited, and the height is provided corresponding to the folded shape of the filter with ears, and the function of contacting the downstream side of the filter 11 to hold the folded shape of the filter and supporting it on the downstream side. Anything that produces an effect can be used.

Next, another mounting structure for mounting the ear filter to the filter frame will be described. As shown in FIG. 4, when the folded eared filter 11 is put in the filter frame 14, the mounting structure is such that the ears 13 of the filter 11 are projected to the outside of both side surfaces on the upstream side of the filter frame 14. The filter 11 is provided and the ear 13 is sandwiched between the pre-filter frames 17 so that the filter 11 can be attached.

In this mounting structure, as in the mounting structure described above, the recesses 1 are formed on the left and right inner side surfaces on the upstream side of the filter frame 14.
There is an advantage that it is not necessary to use the one provided with 5, and a conventionally used filter frame can be used. Further, since the ear portion 13 can be fixedly attached by sandwiching the pre-filter frame to the filter frame when the pre-filter frame is fixed to the filter frame, it does not take time and effort to attach and detach the filter. Further, since the ear portion of this filter is sandwiched and fixed by the pre-filter frame, no gap is generated between the filter frame and the filter frame, and no air leak occurs.

Further, as shown in FIG. 4, the ear portion 1 is provided on the upstream side.
3 is sandwiched between the pre-filter frames 17 so that both ends of the filter 11 are supported, and the bank portion 16 corresponding to the folded shape of the selvage filter 11 provided on the inner side upper and lower surfaces on the downstream side of the filter frame 14 filters the filter. It is also possible to support 11 on the downstream side. In this case, the downstream side of the filter 11 contacts the bank portion 16, and the folded shape of the filter is held by the bank portion 16.

[0043]

According to the present invention, the above-mentioned structure is provided.
In the ear filter described above, the ears having the L-shaped cross section provided at both ends of the filter are received by the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame, or on the left and right side surfaces on the upstream side of the filter frame. Since the attachment to the filter frame is made by sandwiching the ear portion of the ear filter with the pre-filter frame, it does not take time and effort to attach and remove the ear filter, and the labor required for replacement work. Time and can be saved significantly.

Further, in this filter with ears, when the ears are received in the recesses of the filter frame and attached to the filter frame, the filter is pushed to the downstream side by the wind pressure applied during operation, and The ears also come into close contact with the inner wall of the recess due to the force, and a gap is less likely to be formed between the both ends of the filter and the filter frame, so that the occurrence of air leak is reliably prevented.

Even when the ears are attached by the pre-filter frame, since the filter is sandwiched and fixed by the filter frame, there is no gap between both ends of the filter and the filter frame. There is no leak.

Further, in this ear filter, since it can be securely attached to the filter frame by the concave portion of the filter frame or by the pre-filter frame, only the filter can be handled by itself during transportation and the like. It is possible to significantly reduce the time and labor required for replacement work and transportation work. Further, in this ear-attached filter, by adopting the mode as shown in FIGS. 1 and 2, it is possible to fold it into smaller units for each cutting unit, and to reduce the space for transportation and storage.

In the filter with ears according to claim 2,
By hooking the hook portion provided at the tip of the ear portion having an L-shaped cross section into the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame
Since the filter is attached to the filter frame, the filter with ears can be attached and removed easily and surely.

In the filter frame according to the third aspect, by receiving the ears of the ears-loaded filter in the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame, the wind pressure applied to the downstream side during operation is reduced. Since both ends of the filter are supported stably, it is possible to significantly reduce the labor and time required for the replacement work without the need for attaching and removing the ear filter.

Further, in this filter frame, when the ears of the filter are mounted so that the recesses are received, the filter is pushed to the downstream side by the wind pressure applied during operation, and the ears of the filter end are also affected by the force. Since it comes into close contact with the inner wall of the recess and both end portions of the filter also come into close contact with the left and right side surfaces on the upstream side of the filter frame, it is difficult to form a gap between both end portions of the filter and the filter frame, and air leaks are reliably prevented. be able to.

In the filter frame according to the fourth aspect, when the filter is attached to the filter frame, the bank portion provided corresponding to the folded shape of the selvage filter is provided on the inner upper and lower surfaces on the downstream side of the filter frame. Since the filter is in contact with the downstream side of the filter, the bank portion holds the folded shape and is supported on the downstream side.

In the structure for mounting the filter with ears to the filter frame according to the fifth aspect, the filters are mounted by receiving the ears of the filter with ears in the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame. As a result, it is possible to greatly reduce the labor and time required for the replacement work without taking time and effort to attach and remove the ear filter.

In this mounting structure, when the ear portion of the filter is received by the concave portion of the filter frame and mounted on the filter frame, the filter is pushed to the downstream side by the wind pressure applied during operation, and the ear portion of the filter end portion is pushed. Also, due to the force, the inner wall of the recess is brought into close contact with the inner wall of the recess, and a gap is less likely to be formed between the both ends of the filter and the filter frame.

In the structure for mounting the selvage filter to the filter frame according to the sixth aspect, both ends of the filter are supported by the upstream side and the downstream side of the filter is supported by the bank portion so that the folded shape is maintained. Since it is
It is not deformed or damaged by wind pressure during operation or external force applied during handling.

According to the structure for mounting the selvage filter to the filter frame according to claim 7, there is an advantage that a filter frame which has been conventionally used can be used, and the selvage part is a pre-filter frame. Since it can be fixed by being sandwiched between these when it is fixed to the frame, it does not take time to attach and remove the filter. Further, since the ear portion of this filter is sandwiched and fixed by the pre-filter frame, no gap is generated between the filter frame and the filter frame, and no air leak occurs.

In the structure for mounting the selvage filter to the filter frame according to the eighth aspect, both ends of the filter are supported by the upstream side and the downstream side of the filter is supported by the bank portion so that the folded shape is maintained. Since it is
It is not deformed or damaged by wind pressure during operation or external force applied during handling.

[Brief description of drawings]

FIG. 1 is a perspective view showing an ear filter of the present invention.

FIG. 2 is a perspective view showing another aspect of the ear filter according to the present invention.

FIG. 3 is a plan view showing a state in which the selvage filter according to the present invention is mounted in a filter frame.

FIG. 4 is a plan view showing another aspect of mounting the ear filter of the present invention in a filter frame.

FIG. 5 is an enlarged plan view showing still another aspect in which the ear filter according to the present invention is mounted in the filter frame.

FIG. 6 is a perspective view showing a conventional unit type filter.

FIG. 7 is a perspective view showing a state in which a replaceable filter mounted in a filter frame is deformed by wind pressure.

[Explanation of symbols]

 11 ... Filter with ears 13 ... Ears 14 ... Filter frame 15 ... Recessed portion 16 ... Bank portion 17 ... Pre-filter frame

Claims (8)

[Claims] 1. A cross section L is formed at both ends of the folded filter.
A filter with ears, characterized in that mold-shaped ears are provided. 2. The filter with ears according to claim 1, wherein hooks are provided at the tips of the ears having an L-shaped cross section. 3. A cross section L is provided at both ends of the folded filter.
A filter frame for accommodating an ear filter provided with a mold ear portion inside the frame, wherein a concave portion for receiving the ear portion of the ear filter is provided on the left and right inner side surfaces on the upstream side of the filter frame. The filter frame to be used. 4. The filter frame according to claim 3, wherein a bank portion is provided on the inner upper and lower surfaces on the downstream side of the filter frame so as to correspond to the folded shape of the ear filter. 5. A cross section L is provided at both ends of the folded filter.
The filter with ears provided with the ears of the mold is characterized in that the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame are attached by receiving the ears of the filters with ears. Frame mounting structure. 6. A selvage filter having selvages having an L-shaped cross section at both ends of the filter is in contact with a bank portion provided on the inner upper and lower surfaces on the downstream side of the filter frame so as to correspond to the folded shape of the selvage filter. At the same time, the recessed portions provided on the left and right inner side surfaces on the upstream side of the filter frame are attached by receiving the ear portions of the ear-attached filter, and the attachment structure of the ear-attached filter to the filter frame according to claim 5. . 7. A cross section L is provided at both ends of the folded filter.
A filter with ears provided with a ears of a mold is attached to the left and right side surfaces on the upstream side of the filter frame by sandwiching the ears of the ears with a pre-filter frame. Frame mounting structure. 8. A selvage filter having selvages having an L-shaped cross section at both ends of the filter comes into contact with a bank portion provided on the inner upper and lower surfaces on the downstream side of the filter frame so as to correspond to the folded shape of the selvage filter. At the same time, the structure is attached to the left and right side surfaces on the upstream side of the filter frame by sandwiching the ears of the filter with ears with a pre-filter frame. .