JP2002239325A - Air filter unit linkage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the manufacturing cost in an air filter unit linkage consisting of a plurality of air filter units in a linking fashion. SOLUTION: This air filter unit linkage 1 is constituted of a plurality of air filter units of a rectangular parallelpiped shape having a pair of air venting faces 14 formed on both sides in the thickness direction and four sides adjoining the paired air venting faces 14, connected in parallel in the side direction. The linkage 1 is also equipped with a first air filter unit 11 and a second air filter unit 21, the first air filter unit 11 having a linkage frame 19 which achieves the connection of the former with another air filter unit. The second air filter unit 21 has a linkage frame 29 to be connected to the linkage frame 19. In addition, the first air filter unit 11 achieves its connection by moving the linkage frame 19 in the longitudinal direction of a second side 29 from a side position in the longitudinal direction of an opposite direction to the linkage frame 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter unit connecting body, and more particularly, to a rectangular parallelepiped shape having a pair of ventilation surfaces formed on both sides in the thickness direction and four side surfaces adjacent to the pair of ventilation surfaces. And a plurality of air filter units connected side by side in the lateral direction.

[0002]

2. Description of the Related Art As an air filter unit used for purifying air, there is an air filter unit including a filter medium and an outer frame for holding an outer peripheral portion of the filter medium. The filter medium is usually disposed in the outer frame body in a state of being processed into an alternately folded corrugated shape (the filter medium in this state is referred to as a filter pack).

[0003] This type of air filter unit is restricted by equipment such as a pleating machine (filter medium folding machine) used in the manufacture of a filter medium and a leak scan device used after the unit is assembled.
It is impossible to manufacture a large product exceeding 62 mm.

[0004] Under such circumstances, in order to obtain a large air filter unit, a technique of connecting two air filter units has already been proposed. In this technique, an engaging portion is formed in the outer frame body of each air filter unit by extrusion molding so that a part of the surface is folded outward and extends in the longitudinal direction. The two air filter units are arranged so that the engagement portions face each other, and are further connected by engaging a frame of another member formed so that both ends can be engaged with the engagement portions. Is done. At this time, the frame is slid in the longitudinal direction with respect to the two engaging portions and engaged with the two engaging portions.

[0005]

In this technique, since a frame separate from the outer frame is used to connect the two air filter units, the number of parts is increased, and only the outer frame is used. In addition, a mold for manufacturing the frame is required, and the manufacturing cost increases.

When the two air filter units are connected to each other and the air filter unit connecting body is tilted, the frame is guided by the two engaging portions by its own weight and slides, and the frame is disengaged from the two engaging portions. In some cases.

An object of the present invention is to reduce the manufacturing cost of an air filter unit connected body in which a plurality of air filter units are connected.

[0008]

According to a first aspect of the present invention, there is provided an air filter unit connected body formed on both sides in a thickness direction.
A plurality of rectangular parallelepiped air filter units each having a pair of ventilation surfaces and four side surfaces adjacent to the pair of ventilation surfaces are arranged side by side and connected, and the first air filter unit and the second air filter Unit. The first air filter unit has a first side surface connectable to another one air filter unit. The second air filter unit has a second side surface connectable to the first side surface of the first air filter unit. Also, the first air filter unit is connected by moving the first side surface from the longitudinal side position of the position facing the second side surface of the second air filter unit in the longitudinal direction of the second side surface.

When assembling the air filter unit connected body, the first side surface of the first air filter unit is
The second air filter unit is connected by being moved relative to the second air filter unit from a position shifted in the longitudinal direction from a position facing the second side surface. At this time, by connecting the first side surface and the second side surface, the first air filter unit and the second air filter unit are connected.

Here, the first air filter unit includes:
Since the first side surface and the second side surface are directly connected, it is not necessary to use another member as in the related art. Therefore, the number of parts is reduced as compared with the conventional configuration, and there is no need to prepare a separate die or the like, so that the manufacturing cost can be suppressed.

According to a second aspect of the present invention, in the air filter unit connected body of the first aspect, the first side face and the second side face have the same sectional shape.
In this linked body of air filter units, the first and second side surfaces have the same cross-sectional shape, and therefore can be formed by the same mold. Thereby, the manufacturing cost can be further reduced.

According to a third aspect of the present invention, there is provided the air filter unit connected body according to the first or second aspect, wherein the first air filter unit and the second air filter unit are connected to each other (hereinafter, referred to as “connected”). In the connected state), a recess extending in the longitudinal direction of the first and second side surfaces is formed on the surface on the ventilation surface side between the first side surface and the second side surface.

In the jointed air filter unit, a sealant is usually applied to the joint of the air filter unit in order to prevent leakage at the joint of the air filter unit.

However, in the conventional air filter unit connection body, the joint portion of the air filter unit is formed flush with the main body portion of the air filter unit. It was getting worse. In addition, since the application of the sealant needs to be performed continuously in the longitudinal direction so that the gap at the joint is completely covered with the sealant, the operation itself is troublesome.

Therefore, in this air filter unit connection body, a recess extending in the longitudinal direction is formed between the first and second side surfaces in the connection state. Thereby, even if the sealant is applied to the joint between the air filter units, the sealant does not protrude from the surface of the connecting body, and the appearance can be improved. Further, by applying the sealant to the concave portions, the gap between the air filter units is filled and guided in the longitudinal direction, so that the trouble of the application operation is reduced as compared with the related art.

According to a fourth aspect of the present invention, in the air filter unit connected body according to any one of the first to third aspects, the first and second side surfaces have the same key-shaped cross-sectional shape, In a connection state in which the first air filter unit and the second air filter unit are connected, the first side surface and the second side surface are engaged at at least one place.

In this air filter unit connection body,
Since the first and second side surfaces have a key-shaped cross-sectional shape, the strength of the connected body can be increased, and both move relatively from the connected state to allow the first and second air filter units to move between the first and second air filter units. Displacement is less likely to occur.

According to a fifth aspect of the present invention, in the air filter unit connected body according to the fourth aspect, the air filter unit connected body extends in a longitudinal direction between the first side surface and the second side surface in a connected state. A hole is formed. The air filter unit coupling body further includes a cylindrical urging member inserted into the hole while being compressed in the radial direction.

In this air filter unit connection body, a radially expandable urging member such as a spring pin is disposed in a hole formed between the first and second side surfaces in the mounted state. Accordingly, the first and second side surfaces in the hole portion receive the urging force from the urging member, and the engagement becomes stronger, and the play between the both side surfaces is suppressed.

According to a sixth aspect of the present invention, in the air filter unit connected body of the fourth or fifth aspect, the first air filter unit has a first side face and a first side face connected to the first side face. It has a main body, and the first side and the first main body are fixed by a fixing member fixed to the surface of the first side opposite to the second side. Second
The air filter unit has a second side surface and a second body portion connected to the second side surface, and the second side surface and the second body portion are
The second side surface is fixed by a fixing member fixed to a surface of the second side surface opposite to the first side surface. In the connected state, the first
A hole is formed between the side surface and the second side surface, the hole extending in the longitudinal direction and in which the fixing member is disposed.

In this air filter unit connection body, each side surface of each air filter unit is fixed from the side surface surface to each body portion by means such as screws. For this reason, the head of the screw and the like protrude from the surface of the side surface.

However, in the present invention, since the first air filter unit and the second air filter unit are connected by sliding in the longitudinal direction, if the head of such a screw is on the side surface, it is connected. Sometimes an obstacle.

Therefore, in this air filter unit connection body, a hole extending in the longitudinal direction is provided so that a screw or the like projecting from the side surface does not hinder the connection operation, and the fixing member is disposed therein. .

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 shows an air filter unit connecting body 1 to which one embodiment of the present invention is adopted.

This air filter unit connection body 1 is formed by connecting a plurality of air filter units side by side and connecting the first air filter unit 11 and the second air filter unit 11.
An air filter unit 21 is provided.

The first air filter unit 11 is used for purifying air, and includes a filter medium 13 and an outer frame 15 for holding an outer peripheral portion of the filter medium 13.

The filter medium 13 is composed of a polytetrafluoroethylene (hereinafter, PTFE) porous membrane and a gas-permeable supporting member thermally laminated on both sides of the PTFE porous membrane.
In this case, the filter medium 13 is formed into an outer frame 1 in a state in which it is processed into an alternately folded corrugated shape (filter pack).
5 is stored inside. As a result, the first air filter unit 11 has a rectangular parallelepiped shape having a pair of ventilation surfaces 14 formed on both sides in the thickness direction and four side surfaces adjacent to the pair of ventilation surfaces 14.

The outer frame 15 includes an end frame 17 and 2
It is composed of four aluminum frames consisting of four side frames 18 and a connection frame 19. The end frame 17 is arranged to face the connecting frame 19, and the side frame 18 is arranged between the end frame 17 and the connecting frame 19.

The connecting frame 19 is a frame formed so as to be connectable to a connecting frame 19 of a second air filter unit 21 described later, and both ends are fixed to the side frame 18 by screwing.

The connecting frame 19 is formed by extrusion using a mold having a shape as shown in FIG. 2 (reference numeral 19 in the figure), so that it has the same cross-sectional shape as the shape of the mold. Become. More specifically, the connecting frame 19
In this case, an engagement portion 19a is formed by this extrusion molding, and together with the connection frame 19 in a state of being connected to the connection frame 29, a sealant application groove 49a, a pin insertion hole 49b, and a screw escape hole 49c (see FIG. 2 and FIG. 3, both of which will be described later).

The engaging portion 19a is formed at a central portion in the width direction of the frame 19 so as to extend in the longitudinal direction, and has a key-shaped cross section as shown in FIG. Here, the engaging portion 19a
Is provided only in one place, but as shown in FIG.
Two engaging portions 19a may be formed. In such a configuration, the strength at the connection portion of the assembled air filter unit connection body 1 is improved, and
The removal of the air filter unit 11 from the second air filter unit 21 is more reliably prevented.

The second air filter unit 21 is connected to one side surface of the first air filter unit 11, and has a filter medium 13 and an outer frame 15 like the first air filter unit. , And the outer frame 15
Is also composed of four frames 27, 28, 28, 29 similar to the first air filter unit 11. The connection frame 29 is a connection frame that can be connected to the connection frame 19 of the first air filter unit 11 and has a cross-sectional shape (reference numeral 19 in the drawing) shown in FIG. is there. Therefore, the first air filter unit 11 and the second air filter unit 21 are substantially the same.

When the first air filter unit 11 and the second air filter unit 21 are connected, a sealant application groove 49a, a pin insertion hole 49b, and a screw escape hole 49c are provided between the connection frames 19 and 29. To form

The sealant application groove 49a is
9 and the connecting frame 29, on the surface on the side of the ventilation surface 14,
It is a groove extending in the longitudinal direction. After connecting the first and second air filter units in the sealant application groove 49a,
A sealing agent such as chloroprene is applied to prevent leakage.

The pin insertion hole 49b is formed between the connecting frame 19 and the connecting frame 29 so as to extend in the longitudinal direction adjacent to the engaging portions 19a, 29a.
It is formed at two places shown in FIG. The spring pin 31 is inserted into the pin insertion hole 49b. The spring pin 31 has a shape in which a part of the cylindrical member is cut out in the longitudinal direction, and is inserted into the pin insertion hole 49b while being compressed in the radial direction.

The screw escape holes 49c extend in the longitudinal direction between the connecting frame 19 and the connecting frame 29, and are formed at two places shown in FIG. A screw head (not shown) is arranged in the screw escape hole 49c.

When assembling the air filter unit linked body 1 configured as described above, one end of the connecting frame 19 is engaged with one end of the connecting frame 29, and from this state, the first air filter unit 11 is connected to the second air filter unit 21. Slide against. At this time, each screw fixed to the frames 19 and 29 is a screw escape hole 49c.
Because it moves inside, it does not hinder the connection work.

The first and second air filter units 11,
After the connection is made, the sealant is applied to the sealant application groove 49a, and the spring pin 31 is inserted into the pin insertion hole 49b. Thus, the air filter unit connection body 1 is assembled.

In this air filter unit connection body 1,
The first air filter unit 11 is connected to the second air filter unit 21 by directly connecting the connection frame 19 and the connection frame 29 without using a separate frame as in the related art. Therefore, the number of parts is reduced, and the manufacturing cost can be reduced. Further, since the first and second side surfaces can be formed by the same mold, the manufacturing cost can be further reduced.

Further, both air filter units 11 and 12
1 are brought into a connected state only by sliding with respect to each other, so that the workability relating to the assembly of the air filter unit connected body 1 is improved. Further, since the engaging portions of the connecting frames 19 and 29 have a key-shaped cross-sectional shape, the strength of the connecting portion is increased, and the air filter unit 11 is hard to be detached from the air filter unit 21.

[Other Embodiments] (a) The linked air filter unit 1 may be one in which three or more air filter units are connected.

(B) The design items such as the position and shape of the pin insertion hole 49b are not particularly limited to those described above.

[0043]

According to the present invention, since the first air filter unit and the second air filter unit can be connected without using a separate member, the number of parts is reduced, and the connection frames of both air filter units are the same. Since it can be formed by a mold, the manufacturing cost can be suppressed and the workability at the time of assembly can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an air filter unit connected body employing a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a connection frame of an air filter unit of the air filter unit connection body.

FIG. 3 is an essential part perspective view showing the air filter unit connected body in a connected state.

FIG. 4 is a longitudinal sectional view showing a connection frame of an air filter unit connection body employing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air filter unit connection body 11 1st air filter unit 14 Vent surface 19 Connection frame 21 Second air filter unit 29 Connection frame

Claims (6)

[Claims] 1. An air filter comprising: a plurality of rectangular parallelepiped air filter units each having a pair of ventilation surfaces formed on both sides in a thickness direction and four side surfaces adjacent to the pair of ventilation surfaces and connected in a lateral direction. A first filter unit connected body, wherein the first unit is connectable to another one of the air filter units;
A first air filter unit having a side surface; and a second air filter unit having a second side surface connectable to the first side surface of the first air filter unit, wherein the first air filter unit has the first side surface. Are connected by moving in a longitudinal direction of the second side surface from a longitudinal side position of a position facing the second side surface of the second air filter unit. 2. A combined air filter unit according to claim 1, wherein said first side surface and said second side surface have the same cross-sectional shape. 3. The first air filter unit and the second air filter unit.
In a connected state where the air filter unit is connected, a concave portion extending in the longitudinal direction of the first and second side surfaces is formed on the surface on the ventilation surface side between the first side surface and the second side surface. The linked air filter unit according to claim 1 or 2, wherein 4. The first air filter unit and the second side face have the same key-shaped cross-sectional shape.
The air filter unit connection body according to any one of claims 1 to 3, wherein the first side surface and the second side surface are engaged at at least one location in a connection state where the air filter unit is connected. 5. In the connection state, the first side face and the second side face are connected to each other.
The air filter unit according to claim 4, wherein a hole extending in a longitudinal direction is formed between the side surface and the side surface, and the air filter unit according to claim 4, further comprising a cylindrical urging member inserted into the hole while being compressed in a radial direction. Concatenation. 6. The first air filter unit includes the first side surface and the first main body connected to the first side, wherein the first side and the first main body are connected to each other. The second air filter unit is fixed by a fixing member disposed on a surface of the first side opposite to the second side, and the second air filter unit is connected to the second side and the second side. Part, and the second side surface and the second main body part are the first side surface of the second side surface.
A hole that is fixed by a fixing member disposed on a surface facing the side surface and that extends in the longitudinal direction and that the fixing member is located between the first side surface and the second side surface in the connected state; The air filter unit coupling body according to claim 4, wherein the air filter unit coupling body is formed.