JPH029862Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Field of Industrial Application" The present invention relates to a filter medium for a high-performance filter.

``Problems to be solved by conventional techniques and ideas'' A high-performance filter shown in FIG. 1 is used in air conditioning equipment for structures. This filter has a filter medium A, which is a combination of filter paper and a separator, supported by a frame B. As shown in FIG. A separator formed in the shape of a folding screen using kraft paper or thin aluminum plate between the valleys of each fold in order to increase the processing area by bending in a zigzag or meandering manner and to ensure ventilation space in each fold.
Ab… is inserted.

However, in this filter medium A, due to the presence of separators Ab, the interval between each pleat cannot be made sufficiently narrow, and the limit is 5 to 6 mm. Therefore, the amount of filter paper Aa used (processing area) is also limited to this, and there is a regret that the processing air volume cannot be increased even further, and furthermore, productivity is poor, material costs are high, and costs are high.

In addition, since the filter medium A is divided into small sections by the separators Ab..., if a resistance difference occurs locally in the filter medium A, air will stay in the sections with high resistance and hardly escape to the side. As a result, a problem arises in that dust accumulates in the area and becomes increasingly difficult to pass through.

As a method that does not use such a separator, it is possible to attach strips of asbestos in parallel, attach a synthetic resin material, etc. in the same way (e.g., Japanese Patent Application Laid-Open No. 1983-35459), or glue it in the valleys of the folds. It is also possible to partially pour the agent into the filter to solidify its shape, but in these cases, the effective area of the filter paper is considerably reduced due to the asbestos, synthetic resin, adhesive, etc., and the filter material is still finely divided. As a result, there are various problems mentioned above.

The present invention attempts to solve these problems.

``Means for Solving the Problems'' The present invention involves applying a suitable shaping material to both the front and back sides of the filter paper 1 in a line in the longitudinal direction of the filter paper in several parallel strips, and at appropriate intervals in places on the line. By inflating it into a lump and hardening it, the plurality of lump parts 21... are attached to the linear parts 22 with several strips of spacers 2 arranged at equal intervals, and the filter paper 1 with spacers is further lengthened. It is made by folding in a meandering direction.

"Function" With the above configuration, the lumpy portions 21 of the spacers 2 abut against each other at each pleat, maintaining an appropriate interval between the pleats and securing ventilation space.

Furthermore, since the linear portions 22 of the spacers 2 do not abut against each other, they do not partition each portion, and therefore,
Even if there is a difference in resistance in some areas, air that enters areas with high resistance will flow sideways and will not stagnate.
In addition, the linear portions 22 function as reinforcing members despite having a narrow width.

"Example" Hereinafter, the example shown in FIGS. 3 to 5 will be described.

In this embodiment, as shown in FIG. 5, a thermosetting material is formed by placing a shaping material in several parallel lines in the longitudinal direction of the filter paper on both the front and back surfaces of a filter paper 1 formed into a cardboard shape using glass wool. , by applying a two-component curing adhesive or the like, expanding the linear portions into lumps at appropriate intervals, and curing, a plurality of lump portions 21 are formed on the linear portion 22 at equal intervals. Several parallel strips of spacers 2 are arranged, and the filter paper 1 with spacers is further folded in a meandering manner in the longitudinal direction, as shown in FIGS. 3 and 3, to constitute the filter medium A. .

Thus, the lumpy portions 21 come into contact with the opposing sides of each pleat, keeping the interval between the pleats at approximately 3 mm.

``Effects of the invention'' According to the invention, since it has the above-mentioned configuration, the interval between each pleat can be reduced to the minimum while maintaining sufficient ventilation space, and the amount of filter paper used per unit volume can be reduced. The area can be expanded and the processing air volume can be significantly increased.

In addition, if each part is not divided by the spacer 2, and the air that enters the part with high resistance does not flow sideways and stay, there will be no accumulation of dust in that part. There is no increase in resistance due to

Furthermore, since the linear portions 22 of the spacers 2 need only have a narrow width for reinforcement, the effective area of the filter paper 1 is less reduced and efficiency can be improved.

Furthermore, the structure is simple, mechanically it is extremely easy to continuously produce in large quantities, and material costs can be reduced, resulting in significant cost reductions.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a high performance filter, Figure 2 is a perspective view showing a high performance filter;
The figure is a cutaway enlarged perspective view of a conventional filter medium used in the high-performance filter, FIG. 3 is a cutaway enlarged perspective view showing an embodiment of the present invention, and FIG. 4 is a cross-sectional view of the same.
FIG. 5 is an exploded perspective view of the same. A... Filter medium, B... Frame body, 1... Filter paper, 2...
Spacer, 21... lumpy part, 22... linear part.

Claims (1)

[Scope of utility model registration request] By applying a suitable shaping material on both the front and back sides of the filter paper 1 in a linear manner in several parallel lines in the longitudinal direction of the filter paper, and at the same time expanding the linear shapes into lumps at appropriate intervals and curing them, a plurality of shapes are formed. The lumpy portion 21...
A filter medium for a high-performance filter is obtained by attaching several spacers 2 arranged at equal intervals to the linear portions 22, and further folding the spacer-equipped filter paper 1 in a meandering manner in the longitudinal direction.