JPS6143532Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to an air conditioning filter with a large excess area and excellent collection efficiency. Conventionally, filter devices for air conditioning equipment are attached to and detached from the air conditioning equipment by integrally attaching the material in a wooden or metal box with the material bent in a zigzag shape. Each time the box was replaced or cleaned, the box was removed and used, and if the material was unusable, the material was discarded along with the box. Therefore, not only was it extremely inconvenient to handle, but also extremely uneconomical to dispose of. Therefore, in order to eliminate such inconveniences and uneconomical points in operation, to make it detachable from the box, and to make the material easy to use in combination with the box, and to make it easy to attach and detach, Strips of a predetermined length are bent alternately to opposite sides, and with the bending intervals open in a V- or U-shape as in use, flexible sheets are glued to both end faces in the bending direction. A filter with a structure in which both ends of each bending interval are closed was developed in 1987-115324.
It was proposed by the publication no. However, although this air-conditioning filter was significantly advantageous compared to the conventional box built-in type, on the one hand, both end faces of the bent material were completely closed, so that only the bent material was used. However, the effective oversurface area was reduced and there were still problems in terms of collection efficiency. The present invention focuses on the above-mentioned problems, and furthermore, by providing a configuration in which both end faces of the bent and zigzag material can be passed through, air conditioning with a larger effective area and higher collection efficiency is achieved. The purpose is to provide a filter for That is, the feature of the present invention is that the material is further bonded to both end surfaces of the body formed in a zigzag shape via a porous hot melt sheet. Here, when bonding the materials on both end faces,
It is important to glue the zigzag body with the folded interval open to the state in use, and the length of the material and the length of the intervening hot melt sheet to be the same as the state in use. The length may be the same as when opened, but it is recommended to form it long so that it can extend slightly back and forth, and to glue and hold the front and rear extensions to the front and back surfaces of the folded body, and to improve the shape during transportation and use. This is preferable from the standpoint of preventing damage. In this specification, porous hot melt sheet refers to a continuous sheet made of a relatively low melting point polymer such as modified nylon, modified polyester, modified polyolefin, etc., and spun by a means called the spunbond method. Thin non-woven fabric sheets made by binding filaments at their intersections to form a spider web (for example, Dynatsu, manufactured by Kureha Sen'i Co., Ltd.) or porous hot melt films (trade names, Delnet, Inmont, manufactured by Philips Co., Ltd.) Films with slits (e.g., Xylo's products) and films with slits (e.g., Xylo's products) are porous, so they do not impede air permeability, and they do not allow solvents or water to escape, so they do not have a negative impact on the working environment. It has the advantage of not being able to reach that level. In particular, in this invention, materials are glued together,
The use of such a hot melt sheet is essential in order to effectively increase the overarea of the side surface, and replacing it with other conventional adhesives is contrary to the purpose of the present invention. Furthermore, although density gradient nonwoven fabric is most commonly used as the material in the present invention, other materials such as sponge, glass mat, and paper can also be used as appropriate. However, when using the air conditioning filter constructed as described above, it is housed in a box like known filters, and may be taken out when not in use, or it may be used as is without using the box. However, in any case, it is not only foldable and compact for packaging and transportation, but also has an effective overarea of at least 10% larger on both end surfaces compared to known filters.
Along with this, there are various effects such as a reduction in the wind speed passing through the material, a reduction in pressure loss, an improvement in collection efficiency, and an increase in the amount of dust collected relative to the specified air volume. Hereinafter, embodiments of the present invention will be described with further reference to the accompanying drawings. Fig. 1 is a partially cutaway perspective view of the filter of the present invention;
FIG. 2 is a plan view of the same. In each of these figures, 1 is a strip material of a predetermined length, 2 is a veneer material with both end faces adhered, and 3 is a porous hot melt sheet, and the strip material 1 of a predetermined length is bent at the required bending interval. As a zigzag-shaped body A, the veneer material 2 is adhered to both side end surfaces of the body A with hot melt sheets 3 interposed therebetween while the body A is opened in a V- or U-shape when in use. There is. At this time, in the illustrated example, when bonding the veneer material 2, the material 2 is made to have a length that is slightly longer in the front and back than the length of the body A when it is open in use, and at the same time, the porous hot melt sheet 3 is also attached. The extended portions 4, 4' protruding from the front and back of the body A are bent and adhered to the front and back of the body A to improve mold retention. In addition, to adhere the veneer material 2 to both end surfaces of the body A, bend the body A to a specified length, assemble it in a V- or U-shaped jig, place the veneer material 2 on a hot plate, and place the porous material 2 on top of it. After placing hot melt sheet 3,
Heat bonding is possible by placing body A on it for a few seconds.
Of course, other adhesive means are also possible. Next, a comparison will be made of the performance of the air conditioning filter according to the present invention and the filter with end faces closed on both sides according to the above-mentioned Japanese Utility Model Application No. 115324/1983. Both of these filters were made of 80% polyester and 20% rayon nonwoven fabric.

[Table] From the table above, the filter of the present invention slightly increases the initial pressure drop due to the expansion of the effective area, improves the collection efficiency, increases the amount of dust collected, and can be used as a compact filter for large air conditioners. enable the use of

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the filter of the present invention;
FIG. 2 is a schematic plan view of the same. A... body, 1... strip material, 2... material for both end surfaces, 3... porous hot melt sheet, 4,
4'...extension part.

Claims (1)

[Claims for Utility Model Registration] 1. A body formed by alternately bending belt-like materials of a predetermined length to form a zigzag shape, and having porous holes on both end faces of the body in the bending direction so as to open the bending intervals of the body in a state in use. An air conditioning filter with overperformance on the entire surface, characterized in that the materials are bonded together via a hot melt sheet to give overperformance on the entire surface. 2 Utility model registration claim No. 1 in which the length of the material of the porous hot melt sheet and both end surfaces is extended back and forth from the length when the zigzag-shaped body is in use, and the extended portion is bonded and held to the folded body.
An air-conditioning filter with full-scale overperformance as described in Section 1.