JPH0414102Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air purifying filter.

[Conventional technology]

Conventional filters of this type include a band-shaped material 1 made of glass fiber or the like, as shown in FIGS. 7 and 8.
is bent in a zigzag shape toward the upstream and downstream sides of the airflow 2, and is connected in a direction perpendicular to each bent end of this material 1, and between each bent end 3, 3 at a position facing each other on both sides of the material 1. A filter member 10 is sealed to the frame 11, with spacers 7 and 8 inserted and glued into the gap 5 of Filters that are airtightly fitted through materials are often used.

[Problem that the invention attempts to solve]

When the above-mentioned conventional air purifying filter is used in a large air volume processing type air purifier, a large wind pressure is applied to the upstream side of the filter member 10, and this wind pressure causes each of the upstream parts of the material 1 to The portion of the gap 5 between the bent ends 3, 3 where the spacer 7 is not inserted and bonded expands as shown by the dotted line in FIG. Since the spacer 8 presses the part of the gap 6 between the parts that is not inserted and bonded, the pressure loss of the filter increases, and the dust collection area on the downstream side of the material 1 is reduced, reducing the dust collection efficiency. In addition to this, there is a problem that the filter member 10 may come loose from the frame 11.

The present invention aims to provide an air cleaning filter that can solve the above-mentioned conventional problems.

[Means for solving problems]

The present invention will be explained in detail below with reference to FIGS. 1 to 6. Reference numeral 12 is a band-shaped material made of glass fiber or the like, which is bent in a zigzag shape toward the upstream and downstream sides of the airflow 13. 14 is an upstream spacer, 15 is a downstream spacer, these spacers 14 and 15 are continuous in a direction perpendicular to each bent end 16 and 17 of the material 12, and
Each bent end 16 at a position opposite to each other on both sides of the
It is inserted into the gap 18 between the bent ends 16 and the gap 19 between the bent ends 17, and is bonded. This spacer 1
4 and the spacer 15 are spaced 2 on both sides of the material 12.
Provided for each location where 0 is placed. Reference numeral 21 denotes a filter member having the above-mentioned configuration, 22 a frame in which the filter member 21 is hermetically fitted via a sealing material, and 23 a reinforcing spacer. Continuing in a direction perpendicular to the bent end 17, and each bent end 1
It is inserted into the gap 19 between 7 and 17. 24,2
5 are both ends of the reinforcing spacer 23, and the frame 2
2 are fixed respectively.

〔Example〕

Spacers 14, 15 and reinforcing spacer 23
The spacers 14 and 15 may be provided by inserting and adhering a viscous resin material into each gap 18 and 19 of the material 12, and spacers 14 and 15 may be inserted into each gap 18 and 19 of the material 12 with a viscous resin material or the like. It may be provided by inserting and bonding in advance and then inserting the reinforcing spacer 23 into the gap 9. In this latter arrangement, as shown in FIGS. 2 and 3, in the gap 19 between the bent ends 17, 17 on the downstream side of the material 12, from the inlet 26 to each bent end 16 on the upstream side. A reinforcing spacer 23 formed by integrally molding each spacer piece 27 having a shape to be inserted to a position where they touch or approach a position, and a connecting piece 28 that connects them, from a plate piece such as plastic.
A may also be used, and as shown in FIGS. 4 and 5, a wire such as a wire with a round or square cross section may be used, and in the gap 19 between each bent end 17, 17 on the downstream side of the material 12, Each spacer portion 29 is bent into a shape to be inserted from the inlet 26 to a position touching or approaching each bent end 16 on the upstream side.
A reinforcing spacer 23B formed by continuously molding a connecting portion 30 and a connecting portion 30 connecting them may be used. In this reinforcing spacer 23B, each spacer portion 29 can be inserted while being freely deformed in response to changes in the pitch of each gap 19 of the material 12 and deformation of each gap 19, and therefore automatic insertion by a machine is possible. There are advantages. In addition, in the reinforcing spacer 23B, as shown in FIG. 6, the connecting portions at appropriate positions such as the connecting portions near both ends of each connecting portion 30 are extended to provide a grip portion 31, and the grip portion 31 can be grasped by hand or the like. Each spacer portion 29 may be easily inserted into each gap 19 while supporting the reinforcing spacer 23B.

Both ends 24 and 25 of the reinforcing spacer 23 may be fixed to the inner or outer surface of the frame 22 by direct adhesion, welding, etc., or may be fixed using fasteners such as screws, and the reinforcing spacer 23 can be inserted into the frame 22. A section may be provided, and both ends 24 and 25 may be inserted and fixed into the insertion section.

The reinforcing spacer 23 may be provided at one location in the interval 20 between each spacer 15 on the downstream side,
It may be provided at multiple locations.

In addition, even if the filter member 21 is fitted into the same frame 22, in case there is a difference in the number of bent ends 16 and 17 depending on how the material 12 is folded,
Reinforcing spacers may be used in some of the gaps 18 and 19 at one end or both ends of the material 12, so that insertion of spacers can be omitted.

[Effect of idea]

Since the present invention is constructed as described above, even if large wind pressure is applied to the upstream side of the material, the reinforcing spacer can prevent the gap between each bent end on the downstream side of the material from being compressed, and the filter It is possible to secure a sufficient dust collection area on the downstream side of the material without increasing the pressure loss of the material, thereby preventing a decrease in dust collection efficiency. Moreover, since both ends of the reinforcing spacer are fixed to the frame, the wind pressure strength of the filter member can be increased.
Since the filter member can be prevented from being warped and detached from the frame due to wind pressure, it is possible to provide a filter suitable for high-air volume processing type air cleaners and the like.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of the present invention, with Figure 1 being a sectional view of the filter member fitted into the frame, and Figure 2 showing the state immediately before the reinforcing spacer is inserted into the material. Fig. 3 shows the reinforcing spacer inserted into the material, Fig. 4 shows the state just before inserting another reinforcing spacer into the material, and Fig. 5 shows the reinforcing spacer inserted into the material. 6 is a diagram showing a partially modified example of the reinforcing spacer, FIG. 7 is a perspective view of a conventional product, and FIG. 8 is a cross-sectional view of FIG. 7. 12... Material, 14... Upstream spacer, 1
5... Downstream spacer, 16, 17... Bent end, 18, 19... Gap, 22... Frame, 2
3...Reinforcement spacer, 24, 25...Both ends of the reinforcement spacer.

Claims (1)

[Scope of utility model registration request] The material is bent in a zigzag shape to the upstream and downstream sides of the airflow, and the gap between each of the bent ends is continuous in a direction perpendicular to each bent end of the material, and at a position facing each other on both sides of the material. In a filter in which a filter member is formed by inserting and bonding spacers into the frame at spaced intervals on both sides of the material and hermetically fitting the filter member into the frame with a sealing material, each of the spacers on the downstream side of the spacer A reinforcing spacer is provided at each interval in a direction perpendicular to each bent end of the material and inserted into the gap between each of the bent ends, and both ends of this reinforcing spacer are fixed to the frame. An air purifying filter featuring: