JPH0415296Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filter device using mini-pleated filter paper.

[Problems to be solved by conventional techniques and ideas] Conventionally, filters using mini-pleated filter paper do not have room to attach a separator.
Generally used without a separator.

Therefore, since these filters are made of small filter paper, their depth is small, and because the perforated plate is attached to the downstream end of the filter, they generally have a problem of poor air velocity distribution. be.

The present invention aims to solve the above problems.

[Means for Solving the Problems] In order to solve the above problems, the present invention forms a mini-pleated filter body using filter paper with a small depth dimension,
The mini-pleated filter body is fixed to a filter frame having an arcuate portion, and the folding width of the mini-pleated filter body is larger than the folding width of the mini-pleated filter body in the downstream direction from the inner surface of the folded portion at a predetermined interval of the mini-pleated filter body. In a filter device in which a filter frame is fixed so that the partition wall is perpendicular to the folded part, a method is adopted in which a perforated plate is fixed to the filter frame with a gap from the downstream end of the mini-pleated filter body. This solved the above problems.

[Function] According to the present invention having the above configuration, contaminated air blown from the upstream side and having a poor wind speed distribution is filtered by the mini-pleated filter body, and the filtered air is distributed between each partition wall and between the partition wall and the filter frame. The flow is rectified for each block partitioned by both side plates of the block and discharged into the gap, creating turbulent flow in the gap to make the wind speed distribution uniform to some extent, and then discharging through the perforated plate to improve the wind speed distribution. is improved.

[Example] To explain the example of the present invention with reference to the drawings, the first example is as follows.
The figure shows a first embodiment, in which a mini-pleated filter body 2 formed by folding a filter paper 1 with a small depth dimension is placed in a circular filter frame 3 formed in an arc shape as a whole. It is curved into an arc and fixed.

Then, in the downstream direction from the inner surface of the folded part 4 on the upstream side of the airflow at a predetermined interval of the mini-pleated filter body 2, a partition wall 5 larger than the folding width of the filter paper 1 is installed so as to be perpendicular to the folded part 4. It is fixed to the filter frame 3 so that each partition wall 5 has a rectifying effect. Furthermore, an arc-shaped perforated plate 7 having a gap 6 from the downstream end of the mini-pleated filter body 2 and matching the shape of the filter frame 3 is held at the end of the partition wall 5, and the perforated plate 7 is The peripheral edge portion is fixed to the filter frame 3.

To explain the operation of the first embodiment, contaminated air with poor wind speed distribution blown from the upstream side of the air flow is filtered by the mini-pleated filter body 2, but the filtered air is filtered through each partition wall. 5 and the partition wall 5 and the side plates 3', 3' of the filter frame 3. Without the partition wall 5, the wind passing through the mini-pleated filter body 2 flows while spreading in a radial state, and the wind speed distribution is also expanded and becomes in a bad direction.

Furthermore, the filtered air is discharged from the downstream side of the mini-pleated filter body 2 to the gap 6, which generates turbulent flow to make the wind speed distribution uniform to some extent. Clean air is discharged through the perforated plate 7 with improved distribution.

What is shown in FIG. 2 shows the second embodiment, and while the first embodiment has an arcuate portion as a whole, this one has a combination of a flat portion and an arcuate portion. It is.

That is, a mini-pleated filter body 2 is formed by folding a filter paper 1 having a small depth dimension, and a flat part 8 is formed in the center, and arc parts 9 and 9 are formed on both sides of the flat part 8, respectively.
Filter frame 1 formed into a tray shape by connecting filter frames 10 to 10
A mini-pleat type filter body 2 is curved into a tray shape and fixed to the body 1.

Then, the partition wall 5, which is larger than the folding width of the filter paper 1, is placed in the downstream direction from the inner surface of the folded part 4 on the upstream side of the air flow at a predetermined interval of the mini-pleated filter body 2 so as to be perpendicular to the folded part 4. It is fixed to the frame 3 so that each partition wall 5 has a rectifying effect. Furthermore, a tray-shaped perforated plate 7 having a gap 6 from the downstream end of the mini-pleated filter body 2 and matching the shape of the filter frame 11 is held at the end of the partition wall 5, and the perforated plate 7 is The peripheral portion is fixed to the filter frame 3.

The function of the second embodiment is different from the first embodiment in that the wind speed discharged from the flat part 8 and the wind velocity discharged from the circular arc parts 9 and 10 can be divided into two. The operation of the second embodiment is the same as that of the first embodiment, so a description thereof will be omitted.

[Effects of the invention] Since the present invention is as described above, the water is rectified in each block by the partition wall and discharged to the interval,
Turbulent flow is generated in the gap, and the wind speed distribution is made uniform to some extent, and then clean air with a uniform wind speed distribution is discharged by the perforated plate, improving the wind speed distribution of the clean air. Since the perforated plate is fixed to the partition wall and the filter frame, the perforated plate serves as reinforcement together with the partition wall, and the strength of the entire filter can be maintained.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing the second embodiment. In the drawings, 1 is a filter paper, 2 is a mini-pleated filter body, 3 is a filter frame, 4 is a folding part, 5 is a partition wall, 6 is a gap part, 7 is a perforated plate, 9 and 10 are circular arc parts, and 11 is a filter It is a frame.

Claims (1)

[Scope of utility model registration request] A mini-pleated filter body made of filter paper with a small depth dimension is fixed to a filter frame with an arcuate portion in accordance with the shape of the filter frame, and the inner surface of the upstream folding part of the mini-pleated filter body is placed at a predetermined interval. In a filter device in which a partition wall larger than the folded width of the mini-pleated filter body is fixed to the filter frame in the downstream direction so as to be perpendicular to the folded part, there is a gap part from the downstream end of the mini-pleated filter body. A filter device comprising a perforated plate held at the tip of a partition wall and a peripheral edge of the perforated plate fixed to a filter frame.