JPH0532176Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the configuration of an air filter used in building air conditioners and the like.

[Conventional technology]

BACKGROUND ART Conventionally, air filters used in building air conditioners and the like are generally equipped with a coarse dust prefilter and a fine dust filter without a prefilter. In addition, in recent years, integral types of coarse dust prefilters and fine dust filters have been manufactured, but the fine dust filters used in these are generally of the single pleat type with a separator.

[Problem that the invention attempts to solve]

If a pre-filter for coarse dust and a filter for fine dust without a pre-filter are installed separately, the coarse dust re-dispersed from the pre-filter for coarse dust may cause
The life of the fine dust filter will be significantly shortened, and since the fine dust filter with an integrated pre-filter is a single pleat type with a separator, the pre-filter to which it is attached has a flat plate shape, so the filter area is small and the pressure is low. The disadvantage is that losses are high.

[Means for solving problems]

The present invention solves the above problems,
A coarse dust filter is constructed by attaching a plurality of pockets corresponding to the above-mentioned windsock shape to a mounting frame on the windward side of a fine dust filter, which has a plurality of windsock-shaped pockets formed inside the frame using filter media folded into a multi-pleat shape. The present invention provides an air filter in which a pre-filter is formed and integrated into the air filter.

[Effect]

The air filter of the present invention has a coarse dust pre-filter removably attached to a fine dust filter, so that coarse dust re-dispersed from the coarse dust filter, which is installed on the windward side, can be removed from the fine dust filter. It is possible to prevent shortening of life and also to prevent increase in pressure loss by adopting a windsock type for the integrated coarse dust prefilter.

〔Example〕

Embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a perspective view of a fine dust filter part A of an air filter showing one embodiment of the present invention.
The filter medium 1 is folded into a multi-pleat shape and further formed into a V-shape, and inside the frame body 2, the edge part 3 of the filter medium is fixed to the frame body with resin or adhesive to form a plurality of windsock-shaped pockets 4 inside. However, a support frame 5 is attached to the opening surface through which air flows for reinforcement.

As the filter medium 1 used above, for example, a medium-high performance nonwoven fabric or cloth filter having a dust collection efficiency of 65 to 98% by a colorimetric method is used, but is not limited thereto.

FIG. 2 is a perspective view of a coarse dust prefilter B that is integrated into the fine dust filter A, and the filter medium 6 is inserted into a plurality of windsocks so as to fit into the windsock shaped pockets 4 of the fine dust filter A. A pre-filter for coarse dust is formed by forming a two-stage upper and lower part in a shaped pocket 7, and fixing the edge of the opening surface with a reinforcing wire 11 as shown in FIG. do.

For example, the filter medium 6 has a dust collection efficiency of 50 to 50 by gravimetric method.
A filter made of 80% non-woven fabric is used, but is not limited thereto.

FIG. 3 is a perspective view of the coarse dust prefilter B formed as described above being integrated into the assembly. As shown in the figure, the shape of the pocket 7 of the coarse dust prefilter is similar to that of the fine dust filter A. Opening 9
It is shaped to fit in.

Fig. 4 is a partially enlarged view of the fitting part where the coarse dust prefilter B is integrated into the fine dust filter A, and shows the frame 2 of the fine dust filter A and the mounting frame 8 of the coarse dust prefilter B. Although the magnetic tape 10 was used for fixing in a removable manner, adhesives or other fixing means may also be used.

[Effect of idea]

As described above, according to the present invention, by providing a coarse dust pre-filter having a similar windsock pocket on the windward side of a fine dust filter having a multi-pleated windsock pocket, the life of the fine dust filter is extended. In addition, the pre-filter for coarse dust has a windsock type, which suppresses the increase in pressure loss, and the multi-pleat type pre-filter for fine dust is fitted into the opening of the filter, which has practical effects such as saving space. It is something that you have.

[Brief explanation of the drawing]

FIGS. 1 and 2 are a perspective view of a fine dust filter having a multi-pleat filter medium and a perspective view of a coarse dust prefilter that is used integrally with the fine dust inserted therein, according to an embodiment of the present invention. FIG. 3 is a perspective view showing how a pre-filter for coarse dust is assembled into a filter for fine dust. FIG. 4 is a partially enlarged view of the fitting portion between the fine dust filter and the coarse dust prefilter. 1, 6... Filter medium, 2... Frame body, 3... Filter medium edge, 4, 7... Windsock type pocket, 5... Support frame, 8... Mounting frame, 9... Opening, 10... Magic tape, 11...wire.

Claims (1)

[Scope of utility model registration request] A fine dust filter is constructed with a plurality of windsock-shaped pockets made of a filter medium folded into a multi-pleat shape inside the frame, and the shape of the filter medium attached to the mounting frame is arranged in the shape of the plural windsocks on the windward side of the fine dust filter. An air filter that integrally incorporates a coarse dust prefilter that has a plurality of windsock-shaped pockets that fit along the inner surface of the pocket.