JP2000246027A - Air filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive air filter increased in its collecting area and enhanced in dust removing effect. SOLUTION: A large number of projections 4 are provided to the plane 3 of a filter main body 1 which has vent holes provided thereto in a lattice-like pattern so as to be raised therefrom in a rod-shaped or fluffy state and deformed by secondary processing. Since the secondary processing of these projections is performed by heating processing or pressing processing, the deformation of the projections can be certainly performed and secondary processing can be simply performed in low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air filter used for an air conditioner or the like.

[0002]

2. Description of the Related Art Conventionally, an air filter used in an air conditioner or the like has a front surface and a rear surface formed in a planar shape, and a ventilation hole such as a lattice is formed in the air filter. In this conventional air filter, when the air passes through the ventilation holes formed in a grid or the like, only dust is removed.
There is a problem that the dust removing effect is small. In addition, an air filter configured by forming a resin frame by attaching a net processed in a separate process to a portion formed in a lattice shape and incorporating this at the time of molding is also provided, but in this case, it is expensive. There was a problem of becoming an air filter.

[0003] JP-A-7-256026 discloses a filter medium for an air filter. This is because the average fiber diameter is 0.5 to 50, as shown in FIGS.
A concave portion 102 and a convex portion 103 are formed of fibers having a thickness of 0.1 μm, and a difference d between 0.1 and 1.0 mm is formed on the gas inflow side surface. The structure of the concave portion 102 and the convex portion 103 is substantially uniform. And a melt-blown non-woven fabric. However, in this case, since only the uneven shape,
There is a problem that the collecting area for dust is small and the collecting ability is limited.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide an air filter which is inexpensive, has a large collecting area, and has a large dust removing effect.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a projection rising in a bar shape or a hair shape from a plane of a filter body having a ventilation hole such as a grid. It is characterized in that a plurality of portions are provided, and the protrusions are deformed by secondary processing. The invention according to claim 2 is characterized in that the secondary processing of the projection is performed by thermal processing or processing by pressure so that the projection is deformed.

The invention according to claim 3 is characterized in that the secondary processing of the projection is performed by applying pressure by a roller to deform the projection.
The invention according to claim 4 is characterized in that the secondary processing of the projection is performed by a chemical reaction treatment to deform the projection. The invention according to claim 5 is characterized in that the protrusion is formed in a curved shape, a spherical shape, or an uneven shape.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air filter according to the present invention will be described below with reference to the drawings.
FIG. 1 shows an air filter according to an embodiment of the present invention,
(A) is a perspective view thereof, (b) is a partially enlarged perspective view thereof,
(C) is a partially enlarged cross-sectional view thereof, and FIG. 2 is a cross-sectional view showing various shapes of projections provided on a plane of the filter main body.

The air filter of the present embodiment is shown in FIG.
As shown in (a), (b), and (c), a plurality of ventilation holes 2 in a lattice shape are formed in the filter main body 1, and further, a projection 4 that rises in a bar shape from the flat portion 3 of the filter main body 1 is formed. A plurality of protrusions 4 are provided, and these protrusions 4 are deformed by secondary processing. The secondary processing of these projections 4
The protrusions 4 are deformed by thermal processing, processing by pressure of a roller or the like, or processing by chemical reaction processing.

According to the secondary processing of these projections 4, as shown in FIG. 2, they are formed into a bent projection 4a, a spherical projection 4b, or an uneven projection 4c. The air that has been dust-removed to some extent in the ventilation holes 2 of the filter body 1 further strikes these projections 4 and is further dust-removed.

According to the air filter of the present embodiment,
The plurality of projections 4 provided on the flat portion 3 of the filter main body 1 increase the collection area, and can improve the dust removal effect by several steps as compared with a conventional air filter. In addition, since only secondary processing is performed, it can be provided at low cost. In the present embodiment, the projection 4 has been described as being formed from the flat portion 3 of the filter body 1 in a rod shape and deformed by secondary processing. The material that has risen in the shape may be deformed by secondary processing.

[0011]

As described above, according to the first aspect of the present invention, a plurality of rod-like or hair-like projections are provided from the plane of the filter body having a lattice-like ventilation hole. Since the projection is deformed by the secondary processing, it is possible to provide an inexpensive one having a large collecting area and a large dust removing effect. According to the second aspect of the present invention, the secondary processing of the projection is performed by thermal processing or pressure processing, so that the projection can be reliably deformed and the secondary processing can be simplified. The cost of this secondary processing can be reduced.

According to the third aspect of the present invention, since the secondary processing of the projection is performed by the pressure of the roller, the secondary processing can be performed most easily.
According to the invention as set forth in claim 4, the secondary processing of the protrusion is performed by:
Since it was performed by a chemical reaction process, the deformation of the protrusions could be processed into various shapes,
The dust removing effect can be further improved. Claim 5
According to the invention described in (1), since the protrusion is formed in a curved shape, a spherical shape, or an uneven shape, a large dust removing effect according to each shape can be obtained.

[Brief description of the drawings]

FIG. 1 shows an air filter according to an embodiment of the present invention;
(A) is a perspective view thereof, (b) is a partially enlarged perspective view thereof,
(C) is a partially enlarged cross-sectional view thereof.

FIG. 2 is a cross-sectional view showing various shapes of protrusions provided on a plane of a filter main body in the air filter of the embodiment.

FIG. 3 is a plan view showing an example of a conventional filter medium for an air filter.

FIG. 4 is a partial enlarged cross-sectional schematic view of the air filter material shown in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter main body 2 Lattice ventilation hole 3 Plane part 4 Projection part 4a Curved projection part 4b Spherical projection part 4c Uneven projection part

Claims (5)

[Claims] The present invention is characterized in that a plurality of protrusions are provided in the form of bars or hairs rising from the plane of a filter body having a ventilation hole such as a lattice, and these protrusions are deformed by secondary processing. Air filter. 2. The air filter according to claim 1, wherein the secondary processing of the projection is performed by thermal processing or pressure processing to deform the projection. 3. The air filter according to claim 2, wherein the secondary processing of the projection is performed by applying pressure by a roller to deform the projection. 4. The air filter according to claim 1, wherein the secondary processing of the projection is performed by a chemical reaction treatment to deform the projection. 5. The air filter according to claim 1, wherein the protrusion is formed in a curved shape, a spherical shape, or an uneven shape.