JP2601798Y2 - filter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter comprising a filter material folded in a zigzag shape and a rigid frame in which the filter material is interchangeably mounted.

[0002]

2. Description of the Related Art
As a filter, there is a filter in which a filter material folded in a zigzag shape is fixed in a filter frame with an adhesive.

However, in the above filter, since the filter material and the filter frame are integrated, the filter material and the filter frame cannot be replaced separately.
Both the filter material and the filter frame had to be replaced at once.

On the other hand, there has been a filter in which a filter material is fixed to a filter frame by a fastener so that only the filter material can be replaced as needed.

However, in the case of the filter in which the filter material is fixed to the filter frame by the fastener, not only the cost is increased by the amount of the fastener, but also the fastener is released due to vibration or the like, and the filter material falls off the filter frame. There was a problem of getting it.

The present invention has been made in view of such circumstances, and has as its object to provide an inexpensive filter that can be replaced by replacing only the filter material.

[0007]

In order to achieve the above object, the invention according to claim 1 comprises a filter material folded in a zigzag shape and a rigid frame in which the filter material is replaceably mounted. Wherein the folded folds at both ends of the filter material are heat-sealed, and the heat-sealed portion is inserted between a rib provided on the outflow side of the rigid frame side walls and a rigid frame side wall. The gist of the present invention is a filter characterized by being performed.

[0008] The invention according to claim 2 is characterized in that the filter material is
At right angles to the direction connecting the heat seals at both ends of the filter material
The gist is a filter characterized in that both ends in the direction are sealed by a seal member.

Hereinafter, the filter of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the filter 11 of the present invention has a filter material 12 folded in a zigzag shape.
And a rigid frame 13 on which the filter material 12 is replaceably mounted. The filter material 12 may be any material, such as nonwoven fabric or paper, which has been conventionally used as a filter material, as long as it has elongation and strength such that the shape after folding is not easily collapsed. Further, the filter material 12 may be made of a single piece of nonwoven fabric or paper, but may be made of a different type such as a laminate of a plurality of the same type of nonwoven fabric or paper, or a laminate of a binder-bonded nonwoven fabric and a meltblown nonwoven fabric. The structure, such as a nonwoven fabric or a laminated paper, can be freely set according to the size and use of the filter. The filter material 12 is impregnated with a resin such as an ethylene-vinyl chloride copolymer, an ethylene-vinyl chloride-vinyl acetate copolymer, a vinyl chloride resin, or an acrylic resin to reinforce the shape after folding. Is also good. In addition, electret processing for collecting dust by electrostatic force may be performed.

As a folding method, any conventionally known method such as applying a zigzag shape to the filter material 12 by pressing the filter material 12 with a pressing tool (not shown) formed in a zigzag shape is used. May be used. Filter material 1 thus provided with a zigzag shape
The folded folds at both ends are heat-sealed.

As shown in FIGS. 1 and 2, the heat seal portion 14 is inserted between a rib 15 provided on the outflow side of both side walls of the rigid frame 13 and a side wall of the rigid frame 13, and accordingly, The filter material 12 has a rib 15 and a rigid frame 13
It can be inserted between the side walls. And
The thickness of the filter material 12 inserted between the rib 15 and the side wall of the rigid frame 13 prevents the filter material 12 from falling off the rigid frame 13. Therefore, the heat seal portion 14 is preferably hard and thin so that it can be easily inserted between the rib 15 and the side wall of the rigid frame 13.

The filter material 12 of the filter material 12
Both directions perpendicular to the direction connecting the heat seal portions 14 at both ends
Since the end is sealed by a sealing member 16 made of hot melt processed nonwoven fabric, paper, or the like, the zigzag shape given to the filter material 12 is not easily deformed during use or mounting. Filter material 1
2 heat sealing portions 14 at both ends of the filter material 12
The both ends in the direction perpendicular to the sliding direction are sealed by the seal member 16.
As a result, the periphery of the filter material 12 is
It is in a state of being surrounded by the heat seal portions 14 and the seal members 16 provided at both ends, so that it can be easily handled as one exchange member.

The rigid frame 13 has a certain rigidity so that it can withstand long-term use, and its shape can be freely set according to the shape and size of the filter device. Synthetic resin such as polypropylene, metal,
There is no particular limitation such as paper. Ribs 15 are provided at intervals on the outflow sides of both side walls of the rigid frame 13, and the heat seal portions 14 at both ends of the filter material 12 are inserted into gaps between the ribs 15 and the side walls of the rigid frame 13. ,
According to this, the end of the filter material 12 is connected to the rib 15 and the rigid frame 1.
It can be inserted between the three side walls. Note that the longer the length of the rib 15 from the outflow side to the inflow side, the larger the amount of the filter material 12 inserted between the side wall of the rigid frame 13 and the rib 15, and accordingly the filter material 12
This will increase the effect of preventing falling off.

In the filter 11 constructed as described above, the heat seal portions 14 at both ends of the filter material 12 folded in a zigzag shape are provided on the outflow side of both side walls of the rigid frame 13 at intervals. The end of the filter material 12 is inserted between the rib 15 and the side wall of the rigid frame 13 in accordance with this by inserting the filter material 12 into the gap between the rib 15 and the rigid frame 13 side wall. The wind pressure applied to the filter material prevents the filter material 12 from falling off the rigid frame 13.

In this filter, the zigzag shape of the filter material is such that both ends of the filter material 12
Are held by seal members that seal both ends in a direction orthogonal to the direction in which the heat seal portions 14 are connected, so that replacement with a rigid frame can be easily performed.

[0016]

EXAMPLE A filter material obtained by laminating and integrating a binder-bonded nonwoven fabric and a melt-blown nonwoven fabric was cut into a width of 80 mm, and this was hot-pressed with a zigzag-shaped pressing die (not shown) to obtain the filter material. Is given a zigzag shape (fold width 18 mm, number of folds 52). After this, 7 mm from the side where the folded folds flow out of both ends of the filter material
Is heat-sealed to form a heat-sealed portion having a thickness of 2 mm. Both ends of the filter material of this filter material
The both ends in the direction orthogonal to the direction connecting the heat seal portions are sealed with a hot melt processed nonwoven fabric.

ABS resin is 75 mm long x 195 mm wide x
It is molded into a frame having a size of 20 mm in depth, and at the same time, ribs having a length of 8 mm are formed on both sides of the frame on the side of the outflow side at an interval of 2 mm from the side wall.

When the filter material is mounted in the frame molded in this way, the filter material is prevented from falling off by the thickness of the end inserted into the gap between the rib and the side wall of the frame in accordance with the heat sealing portion. , Did not easily fall off the frame.

[0019]

According to the present invention, the above-mentioned structure is provided.
In the filter described, by inserting the heat seal portions at both ends of the filter material folded into a zigzag shape into the gap between the ribs provided at intervals on the outflow side of the rigid frame side walls and the rigid frame side walls. According to this, the filter material end is inserted between the rib and the rigid frame side wall, and the thickness of the inserted filter material end and the wind pressure applied to the filter material during use prevent the filter material from dropping out of the rigid frame. As a result, the filter material can be easily replaced by replacing only the filter material as needed. Further, since a fastener for fixing the filter material to the rigid frame is not required, the cost is reduced accordingly.

[0020] In the filter according to the second aspect, the zigzag shape of the filter material is such that both of the filter materials are the same.
Since it is held by a seal member that seals both ends in a direction orthogonal to the direction connecting the end heat seal portions, it can be easily handled as one replacement member, and can be easily replaced with a rigid frame.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing a state in which a filter material is mounted on a rigid frame.

FIG. 2 is an enlarged front view showing a heat seal portion at an end of a filter material.

FIG. 3 is a perspective view showing a filter material.

FIG. 4 is a perspective view showing a rigid frame.

[Explanation of symbols]

 12 ... Filter material 13 ... Rigid frame 14 ... Heat seal part 15 ... Rib

Claims (2)

(57) [Scope of request for utility model registration] 1. A filter comprising a filter material folded in a zigzag shape and a rigid frame to which the filter material is replaceably mounted, wherein folded folds at both ends of the filter material are heat-sealed. A filter characterized in that a heat seal portion is inserted between a rib provided on the outflow side of both side walls of said rigid frame and a side wall of said rigid frame. 2. The filter material according to claim 1 , wherein both ends of said filter material are provided.
The filter according to claim 1 , wherein both ends in a direction orthogonal to a direction connecting the heat seal portions are sealed by a seal member.