JP2595048Y2 - Double pleated air filter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter used in an air purifier, and more particularly to a compact double pleat suitable for various air conditioners ranging from a central air conditioning system to an individual distribution system. Type air filter.

[0002]

2. Description of the Related Art Conventionally, a double pleated air filter obtained by further folding a pleated filter medium into a V-shape has a reinforcing member to reinforce the uppermost stream and / or the lowermost stream of the filter medium against wind pressure. Usually, a metal lath net having an aperture ratio of about 70% is used. The lath net is rigid and has excessive strength for reinforcing the filter medium, but has the following problems. That is, it is easily deformed at the time of assembly and insertion, and is difficult to handle, leading to a reduction in workability.
Since the ends are not smooth, the filter media will be damaged during assembly and insertion, lowering the original performance of the air filter.
Further, there is a disadvantage that the volume of only the reinforcing member is not reduced at the time of incineration. SUMMARY OF THE INVENTION An object of the present invention is to provide a double-pleated air filter which solves the above-mentioned conventional problems.

[0003] In order to achieve the above object, the double pleated air filter of the present invention is a double pleated air filter in which a folded filter material is formed into a V shape.
Two reinforcing body comprising parallel-arranged bar-shaped member between the connecting member and erection and synthetic resin structural member formed, as well as reinforce the most upstream portion and / or the most downstream portion of the filter media, the
An opening ratio of the reinforcing member is set to 70% or more .

[0004]

According to the double pleated type air filter of the present invention, a reinforcing member arranged at the most upstream and / or the most downstream part of the filter medium is provided by connecting a connecting member between two parallel bar members. Since the reinforcing member is constituted by the formed synthetic resin structural material, the reinforcing member can maintain the strength and have an aperture ratio of 70% or more, and can be reduced in volume by incineration.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the double pleated air filter of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of a double-pleated air filter according to the present invention, in which a so-called double-pleated filter medium 10 formed with a fold and folded into a V-shape is accommodated in a frame body 20. is there.

FIG. 2 shows a state in which reinforcing members 30 are arranged at the most upstream part and the most downstream part of the filter medium 10, and as shown in FIG. Connecting member 3 formed in a ring shape between the rods 31
2 is formed on the synthetic resin structural material. In the illustrated example, the aperture ratio is about 83%. The reinforcing body 3
Numeral 0 is fixed by fixing each end of the bar-shaped members 31, 31 to the upper and lower plates 21, 21 of the frame 20.

In the above-described embodiment, the reinforcing member 30 is disposed at both the most upstream portion and the most downstream portion of the filter medium 10. However, the reinforcing member 30 may be disposed only at the most upstream portion or only at the most downstream portion. Further, if necessary, the filter medium 10 may be disposed at a place other than the most upstream part and the most downstream part of the filter medium 10 to further reinforce the filter medium 10.

The reinforcing member 30 may have any shape, for example, a continuous ring shape as shown in FIG. 4 or a truss shape as shown in FIG. is there. The opening ratios of the reinforcing member 30 shown in FIG. 4 and the reinforcing member 30 shown in FIG. 5 were 77% and 71%, respectively, and there was no problem in strength.

Since the reinforcing body 30 needs to have the required strength as the reinforcing body 30 as well as being capable of being reduced in volume by incineration, it is preferable to use a synthetic resin such as ABS resin or polypropylene. It is preferable to use a synthetic resin filled with glass fiber, talc, or the like.

If the end surface of the bar 31 constituting the reinforcing member 30 is manufactured to be smooth at the time of molding, even if the end surface of the bar 31 comes into contact with the filter medium 10, the filter medium 10 is damaged. There is no fear that the workability at the time of assembling can be improved and a decrease in filter performance can be suppressed.

If the frame body 20 is formed of a plywood or a combustible member such as a synthetic resin as in the case of the reinforcing body 30, the entire filter will have a very large volume reduction ratio.

[0012]

As described above, according to the double-pleated air filter of the present invention, the reinforcing member can increase the aperture ratio while maintaining the same strength as that of the conventional metal lath net, thereby improving the processing efficiency. This has the effect of providing a double-pleated air filter having excellent pressure reduction, a small pressure loss, and a large volume reduction rate.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a double-pleated air filter of the present invention.

FIG. 2 is an explanatory view showing an arrangement of a filter medium and a reinforcing body of the embodiment.

FIG. 3 is a plan view of the reinforcing member of the embodiment.

FIG. 4 is a plan view showing another embodiment of the reinforcing member.

FIG. 5 is a plan view showing still another embodiment of the reinforcing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Filter medium 20 Frame 21 Upper and lower plates 30 Reinforcement body 31 Bar-shaped material 32 Linear reinforcement rib

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-255822 (JP, A) JP-A-63-268606 (JP, A) JP-A-53-103279 (JP, A) 189323 (JP, U) Japanese Utility Model 63-176521 (JP, U) Japanese Utility Model 63-173330 (JP, U) Japanese Utility Model 2377-20 (JP, U) (58) Field surveyed (Int. ⁶ , DB name) B01D 46/52 F24F 13/28

Claims (2)

(57) [Scope of request for utility model registration] 1. A double pleated air filter in which a pleated filter material is formed in a V-shape, comprising a synthetic resin structural material formed by connecting a connecting member between two parallel bar members. The reinforcing member reinforces the uppermost stream portion and / or the most downstream portion of the filter medium and reduces the opening ratio of the reinforcing member.
A double pleated air filter characterized by being at least 70% . 2. The double pleated air filter according to claim 1, wherein an end face of the bar-shaped material constituting the reinforcing member is formed smoothly.