JPH08206430A - Air filter - Google Patents

Abstract

PURPOSE: To attach an air filter element simply to a paper frame while saving labor in paper frame forming work in a production process of a paper air filter. CONSTITUTION: In the air filter which is made by bonding the whole fringe part of an air filter element 6 which is folded zigzag to the whole inner surface of a paper frame 2 formed into a picture frame shape, the paper frame 2 is constituted from square paper tubes 10a, 10b, and both ends of the tubes 10a, 10b are connected by connection means respectively to form the frame 2 into a picture frame shape.

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 for an air conditioner or the like.

[0002]

2. Description of the Related Art Although air filters used for air conditioners and the like have a frame made of light metal or plastic, there is a problem that it is not easy to dispose of them after disposal. Therefore,
In order to facilitate the processing, an air filter composed of a paper frame as shown in FIG. 5 has been considered.

In a conventional paper air filter, cuts 3 are formed on both sides of the paper in the longitudinal direction, cutouts 4 are provided at predetermined positions outside the cuts 3, and the cut is bent in a U-shape as shown in FIG. To form a paper frame 2, and the paper frames 2 are joined together to form a frame shape.

When the paper frames 2 are joined together in a frame shape in this way, as shown in FIG. 5, an adhesive agent 7 is applied along the four inner side surfaces of the paper frame 2, and the air filter element 6 is applied by the adhesive agent 7. The four-sided edge portions of are fixed to the paper frame 2. Thereby, the paper frame 2 and the air filter element 6 are integrally fixed, and the air filter 1 made of a paper frame is formed.

Therefore, the conventional air filter 1 made of a paper frame is used.
In the manufacturing process of 1, the work of forming the paper frame 2 by making a cut 3 in the paper and then bending it into a U-shape is required. Also,
When adhering the four-sided edge portions of the air filter element 6 to the four inner sides of the paper frame 2, it is necessary to perform the adhering work while pressing the both-side bent portions 5 of the paper frame 2 so as not to spread outward.

In order to simplify such work, it is conceivable to form a U-shaped paper frame by cutting the rectangular paper tube at a predetermined position in the longitudinal direction and connect the paper frames in a frame shape.

However, even if such a U-shaped paper frame is used, it is necessary to perform the bonding work in the same manner as described above so that the both-side bent portions of the paper frame do not spread outward.

[0008]

Therefore, an object of the present invention is to eliminate the work of forming a U-shaped paper frame in the process of manufacturing an air filter made of a paper frame, and to provide an air filter element on the paper frame. Is to be easily attachable.

[0009]

In order to solve the above problems, the present invention adheres the four-sided edges of an air filter element folded in a zigzag shape to the four-sided inner side surfaces of a frame-shaped paper frame. In the air filter configured as described above, the paper frame is formed of a square paper tube, and both ends of the square paper tube are connected by connecting means to form a frame shape.

[0010]

When the both ends of the square paper tube are connected by the connecting means, they can be easily formed into a frame shape.

By bonding the four-sided edge portions of the air filter element to the four inner sides of the square paper tube, the square paper tube and the air filter element can be easily fixed.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a paper air filter 1 is composed of a paper frame 2 formed in a frame shape and an air filter element 6 folded in a zigzag shape. The paper frame 2 is composed of a pair of square paper tubes 10a and 10b. Here, the square paper tubes 10a and 10b are thin paperboards which are formed into a square tubular shape by gluing them while spirally winding them into a square shape. Says a tube.

As shown in FIGS. 1 and 2, the square paper tubes 10a and 10b are formed in a frame shape by connecting the four corners thereof with connecting tools 11. As shown in the drawing, the connector 11 is provided with insertion portions 13 at right angles to each other, and the insertion portions 13 are connected to the square paper tubes 10a and 10a.
It is fitted and closely attached to both ends of b.

L-shaped adhesion auxiliary members 12 are attached to both ends of the opposing inner side surfaces of the square paper tube 10a along the longitudinal direction of the square paper tube 10a. The adhesion auxiliary member 12 can be omitted depending on the adhesion means, as will be described later.

When manufacturing a paper air filter having the above-described structure, first, a pair of square paper tubes 10a and 10b are connected by a connecting tool 11 to form a frame shape.

Next, as shown in FIGS. 3 and 4 (a),
The adhesive 7 is applied to the inner surface of the square paper tube 10a facing each other and the inner surface of the adhesion auxiliary member 12 to fix the square paper tube 10a and both side portions 14 of the air filter element 6 to each other. At the same time, the opposite inner surfaces of the square paper tube 10b and both ends 15 of the paper filter element 6 are fixed to each other with an adhesive.

Further, as shown in FIG. 4B, the square paper tube 1
The opposing inner side surfaces of the air filter element 0a and both side portions 14 of the air filter element 6 can be fixed to each other by a non-woven fabric 16 infiltrated with adhesive. In this case, since the adhesive does not stick out from both ends of the inner surface of the square paper tube 10a facing each other,
The adhesion assisting member 12 becomes unnecessary.

[0019]

As described above, according to the present invention, since both ends of the square paper tube are connected by the connecting means, they can be easily formed into a frame shape. As a result, it is possible to simplify the conventional work of making a cut in the paper, forming a U-shaped paper frame, and connecting the paper frames to form a frame.

Since the four edges of the air filter element are adhered to the four inner sides of the square paper tube, the square paper tube and the air filter element can be easily fixed. As a result, when bonding the paper frame and the air filter element as in the past,
You can solve the problem that both sides of the paper frame fold outwards,
The bonding work can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a paper air filter.

FIG. 2 is a partially omitted exploded perspective view of the above.

FIG. 3 is a partially omitted vertical sectional view of the above.

FIG. 4A is a partially omitted vertical cross-sectional view showing the above-mentioned bonding means. FIG. 4B is a partially omitted vertical cross-sectional view showing another example of the above-mentioned bonding means.

FIG. 5 is a partially omitted perspective view showing an example of a conventional paper air filter.

[Explanation of symbols]

 1 Paper Air Filter 2 Paper Frame 3 Cut 4 Notch 5 Bent 6 Air Filter Element 7 Adhesive 8 Reinforcing Paper Pieces 10a, 10b Square Paper Tube 11 Coupling Tool 12 Adhesion Assisting Member 13 Insertion Part 14 Side of Air Filter Element 15 Air Filter Element Edge 16 Nonwoven Fabric

Claims (1)

[Claims] 1. An air filter formed by adhering four-sided edges of an air filter element folded in a zigzag shape to four inner sides of a frame-shaped paper frame, the paper frame being formed of a square paper tube. An air filter in which both ends of the square paper tube are connected to each other by connecting means to form a frame shape.