JPS61187915A - Filter device for air purification - Google Patents

Abstract

PURPOSE:To obtain a filter device permitting reduction of maintenance cost without deteriorating stable and high filtration performance by constructing the air purification filter to a multilayered structure. CONSTITUTION:A multilayered filter 10 for air purification is formed by superposing air purification filter 11-13 coated with a coating resin. The multilayered filter 10 is folded to a bellows shape which is attached to an external frame 3 with adhesive 4 and 5 so as not to cause leakage of air. Accordingly, if the air purifying capacity of the filter 11 is reduced by collecting dust to a certain degree, the first filter 11 is detached and the second and the third filter 12, 13 are slid simultaneously to the air inlet side, and a fresh filter is attached to behind the third filter 13. Thus, the maintenance cost of the filter device is held at a low level.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an air cleaning filter device used to filter environmental air and remove floating dust.

[Conventional technology]

FIG. 2 is a partial perspective view showing a conventional air cleaning filter device.

The air cleaning filter 1 is made of glass fiber or the like,
A coating resin is applied to its surface to strengthen water-breaking properties. Such an air purifying filter 1 is bent into a bellows shape and attached to an outer frame 3 made of plywood, metal plate, etc. with adhesives 4 and 5 to prevent air leakage.

Separators 2 are inserted into each bent portion of the air purifying filter 1 from both sides so that air passes through the entire surface of the filter 1 evenly. Note that the separator 2 is fixed to the outer frame 3 and also has the role of fixing the air purifying filter 1.

When the air containing dust passes through the air purifying filter l, the dust is collected by the filter l and the air is purified. The filter 1 has a certain thickness, and most of the relatively large dust is collected on the surface of the air purifying filter 1, and the relatively small dust is collected inside.

Once the filter 1 collects a certain amount of dust, its air purifying ability decreases, so it is replaced with a new filter at an appropriate time in order to maintain predetermined filtration characteristics.

[Problem that the invention seeks to solve]

However, the amount of dust collected on the surface of the filter 1 is much larger than the amount of dust collected inside the filter 1. Therefore, the dust collection ability of the surface portion of the filter 1 decreases faster than the dust collection ability of the inside of the filter 1. Therefore, in order to maintain predetermined filtration characteristics, the filter must be replaced even though the filter 1 still has sufficient dust collection ability. In a sense, this can be said to be a waste of filter replacement.

The present invention has been made in view of the above problems, and its purpose is to provide an air purifying filter device that can reduce maintenance costs while maintaining stable and high filtration performance. It is about providing.

[Means for solving problems]

In order to achieve this object, the present invention provides a multilayered air cleaning filter.

[Operation] Most of the dust is collected by the filter placed on the air intake side, and the relatively small dust that passes through this filter is collected by the rear filter.

〔Example〕

Hereinafter, the present invention will be described in detail along with examples.

FIG. 1 is a partial perspective view showing one embodiment of the present invention,
The same or corresponding parts as in FIG. 2 are given the same reference numerals.

Air cleaning filter 11 coated with coating resin
~13 is a multilayer filter 1 for air purification that is stacked on top of each other.
It constitutes 0. The air purifying multilayer filter 10 is bent into a bellows shape and attached to the outer frame 3 with adhesives 4 and 5 to prevent air leakage. The adhesive 4 is an epoxy adhesive, and is applied to the entire inner wall surface of the outer frame 3. The adhesive 5 is locally applied to the ends of the filters 11 to 13.
A material suitable for removal is used.

Separators 2 are inserted into each bent portion of the air purifying multilayer filter 10 from both sides so that air passes through the entire surface of the filter 1 evenly.

Note that the separator 2 is fixed to the outer frame 3 and also has the role of fixing the air purifying multilayer filter 10.

The filters 11 to 13 are sufficiently thinner than conventional single-layer air purifying multilayer filters, and even if they are stacked to form the air purifying multilayer filter 10, they can be used as conventional single-layer air purifying filters with the same filtration area. No pressure loss compared to filters. Note that the filtration area can be adjusted by the number of folds of the filter, and the greater the number of folds, the larger the filtration area can be.

Furthermore, it can be said that the cost per filter is lower due to its thinner thickness.

When the air containing dust passes through the air cleaning multilayer filter 10, the dust is collected by the filters 11 to 13, and the air is purified.

Most of the air dust passing through the multilayer filter 10 is
The dust collected by the filter 11 and passed through the first filter 11 is collected by the second filter 12;
The dust that has passed through is collected by a third filter.

When the filter 11 collects a certain amount of dust, its air purifying ability decreases, so it is necessary to replace the filter with a new one at an appropriate time in order to maintain predetermined filtration characteristics as an air purifying filter device.

In this case, the first filter 11 is removed, the second filter 12 and the third filter 13 are slid toward the air inlet, and a new filter is placed further behind the third filter 13. That is, a new air purifying multilayer filter is constructed in which the filter 12 and the filter 13 are used as a first filter and a second filter, respectively, and the new filter is used as a third filter.

Note that although the air purifying multilayer filter 10 of this embodiment has a three-layer structure, it goes without saying that it does not matter as long as it has two or more layers.

〔Effect of the invention〕

As explained above, according to the air purifying filter device of the present invention, since the filter is multi-layered, when the filtration characteristics deteriorate, the air intake side, which has the highest amount of dust collection and is most fatigued, By removing the filter and placing a new filter at the rearmost position, each filter will be slid in sequence each time the filter is replaced, making the most effective use of the filter. Moreover, if a multilayer filter is used, each filter can be made thinner, and the cost per filter can be reduced, so maintenance costs can be kept low.

[Brief explanation of drawings]

FIG. 1 is a partial perspective view showing an embodiment of the present invention, and FIG. 2 is a partial perspective view showing a conventional air cleaning filter device. 3...Outer frame, 10...Multilayer filter for air purification.

Claims (1)

[Claims] An air cleaning filter device that collects dust in the air using an air cleaning filter, characterized in that the air cleaning filter is multilayered.