JP4842600B2 - High performance air filter built-in outlet filter unit - Google Patents

Description

  The present invention relates to a high-performance air filter built-in air outlet filter unit used in a clean room configuration for ensuring a clean environment in semiconductor factories, hospitals, pharmaceutical factories, food factories, and other factories.

  A conventional high-performance air filter built-in air outlet filter unit that has an inlet at the top and an air outlet at the bottom, as shown in the previous section, inserts a screwdriver into the screw insertion tool hole, twists the operating rod, connects the pipe, shaft member In addition, there are those that open and close the damper by rotating the swirl and the operating shaft (for example, see Patent Document 1).

  In addition, there is an airflow adjustment damper provided at the inlet, the adjustment flexible shaft is mechanically linked to the airflow adjustment damper, and the tip of the adjustment flexible shaft is adjustably positioned at the edge of the outlet ( For example, see Patent Document 2.)

Japanese Utility Model Publication No. 61-46328 Japanese Utility Model Publication No. 63-28114

  However, the air volume adjusting mechanism of the high-performance air filter built-in air outlet filter unit of Patent Document 1 has a problem that the outer dimension of the chamber becomes large because the operation portion is provided in the chamber. In addition, there has been a problem that the mechanism (seal mechanism) for shutting off the contaminated air side and the clean air side of the air volume adjusting mechanism has a very complicated structure.

  Further, Patent Document 2 discloses a structure in which an air volume adjusting mechanism is provided outside the chamber. However, there is no seal structure in the air volume adjusting mechanism, and there is no description suggesting it.

  In the air outlet filter unit with a built-in high-performance air filter, shutting off the contaminated air side and clean air side is a very important factor. If the shutoff is insufficient, the clean air side cleanliness can be secured. Therefore, a serious problem will occur.

  The present invention has been made to solve the above problems, and provides a high-performance air filter built-in air outlet filter unit having a simple structure as a sealing mechanism in an air volume adjusting mechanism and having a highly airtight sealing mechanism. With the goal.

In order to achieve the above object, a high-performance air filter built-in air outlet filter unit according to the present invention has a high-performance air filter built-in air outlet that filters air from an upper inlet through an air filter and discharges it from the lower air outlet. In the filter unit, a cubic filter unit having the air filter mounted therein, an air volume adjusting damper blade provided in the damper duct of the introduction port, and a damper shaft for driving a damper shaft of the air volume adjusting damper blade A drive unit;
Possess a shaft drive coupling mounted to the distal end of the shaft depending from said damper axis driving unit, and a O ring attached in the groove between the threaded portion and the head portion of the shaft drive coupling, the filter unit with mounting the shaft drive coupling in a through hole provided in the frame portion of the air outlet side, the Rukoto O-ring receiving the O-ring receiving is provided between the frame portion of the O-ring and the through-hole Features.
Another high-performance air filter built-in air outlet filter unit of the present invention is a high-performance air filter built-in air outlet filter unit that filters the air from the upper inlet through an air filter and that flows from the lower air outlet. A cubic filter unit with a filter installed therein, an air volume adjusting damper blade provided in the damper duct of the introduction port, a damper shaft driving unit for driving a damper shaft of the air volume adjusting damper blade, and the damper A shaft drive joint attached to a tip of a shaft depending from the shaft drive part; and an O-ring attached to a groove between a screw part and a head part of the shaft drive joint; The shaft drive joint is attached to a through-hole provided in the side frame portion, and the frame portion of the through-hole is bent inward. Wherein the ring receiving is formed.

  According to the air outlet filter unit with a built-in high-performance air filter of the present invention, the assembly work of the unit can be easily performed, and since the air volume adjusting mechanism is simple, the number of parts is small and the cost can be reduced. In addition, it is possible to provide an air flow adjusting mechanism having a simple structure and a high air tightness in the air flow adjusting mechanism.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a high performance air filter built-in outlet filter unit according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of a high performance air filter built-in outlet filter unit according to the present invention. FIG. 2 is a cross-sectional view of a high performance air filter built-in air outlet filter unit according to the present invention. However, FIG. 1 is a perspective view in a state where the punching 15 shown in FIG. 2 is removed, and shows a state in which the filter 7 is mounted in the filter unit 10 as viewed from, for example, a clean room.

  1 and 2, the air outlet filter unit 100 with a built-in high-performance air filter is, for example, a fixing member (not shown) with the air filter 7 attached to the lower side in a cubic (box-shaped) filter unit 10. Installed on the ceiling material 22.

  A U-shaped filter mounting frame 19 is provided around the side wall at an intermediate position in the filter unit 10 having an air outlet on the lower surface. The upper side surface of the air filter 7 is brought into contact with the filter mounting frame 19 in the filter unit 10, and the lower side surface is provided on a filter tightening bolt 8 fixed at a predetermined position (for example, four locations) in the filter unit 10. It is attached with a filter fastening bracket 9. The filter tightening bolt 8 is fixed to a predetermined position in the filter unit 10 by a metal fitting 21, and a filter tightening nut 12 is provided between the filter tightening bolt 9.

  Further, a punching frame 15 having a trapezoidal shape is disposed in the lower opening 20 of the filter unit 10, and a punching frame 18 is formed on the entire periphery of the punching 15. The punching frame 18 is brought into contact with the ceiling material 22 and attached to the frame 11 of the filter unit 10 with, for example, four punching attachment screws 16. All of the air guided from the damper duct portion 3 into the filter unit 10 is discharged through the air filter 7 into the lower opening 20 and further into the clean room through the punching 15.

  Next, the air volume adjusting mechanism according to the high-performance air filter built-in outlet filter unit 100 of the embodiment will be described.

  The damper duct portion 3 is attached to the connection port 3 a opened on the outer side wall above the filter mounting frame 19 of the filter unit 10. And inside the damper duct part 3, the damper blade | wing 1 pivotally supported by the damper axis | shaft 4 is attached. By rotating this damper blade 1, the amount of air from the connection port 3a can be adjusted.

  A damper driving unit 2 that rotationally drives the damper blade 1 is provided on the side wall of the damper duct unit 3. Further, a shaft 5 hanging from the damper driving unit 2 is attached to the damper driving unit 2 along the filter unit 10, and the damper shaft 4 is rotationally driven by the shaft 5. The shaft 5 is connected to the shaft drive joint 6 via the connection fitting 13, and the shaft drive joint 6 is attached to the frame 11. An opening 17 is provided in the punching frame 18 on the lower side of the head portion 6a of the shaft drive joint 6, and the head portion 6a is exposed. The shaft 5 may be a flexible shaft.

  Therefore, when the head portion 6a of the shaft drive joint 6 is rotated by a screwdriver or the like, the shaft 5 is rotated through the coupling fitting 13, and the damper shaft 4 is further rotated by the damper drive portion 2 to adjust the air amount by the damper blade 1. Is done.

Next, details of the air volume adjusting mechanism will be described below.
FIG. 3 is a detailed sectional view showing the first embodiment of the air volume adjusting mechanism.
In order to attach the shaft drive joint 6 to the through hole 25a provided in the frame 11 of the filter unit 10, an O-ring 28 and a tip that are mounted in advance are tapered on the side of the shaft drive joint 6 located in the through hole 25a. An O-ring receiver 27 which is 40 is provided. That is, the O-ring 28 is provided in the groove 6b between the screw portion 30 of the shaft drive joint 6 and the head portion 6a. An O-ring receiver 27 is attached to the O-ring. The diameter of the O-ring receiver 27 is slightly smaller than the diameter of the through hole 25a.

  When the shaft drive joint 6 is inserted into the through hole 25a, the repulsive force of the O ring 28 spreads the O ring receiver 27 outward and locks it to the through hole 25a. Cut off the flow. After the insertion, the nylon washer 26 is inserted into the cylindrical portion 29 of the shaft drive joint 6, and the tightening U nut 14 is inserted into the screw portion 30 of the cylindrical portion 29 of the shaft drive joint 6 and fixed. As a result, the shaft drive joint 6 is attached to the frame 11 of the filter unit 10 and is fastened and fixed by the tightening U nut 14 so as not to loosen.

  The tightening U nut 14 prevents the shaft drive joint 6 from dropping and prevents the O-ring 28 from being deteriorated due to the looseness of the shaft drive joint 6. The nylon washer 26 is attached to prevent the shaft 5 from swinging. The O-ring receiver 27 supports the O-ring 28 from the outside, and is configured so that it can be easily inserted into the through hole 25a by the tapered shape 40 at the tip.

  Further, one of the connection fittings 13 is inserted into the cylindrical portion 29 provided on the upper portion of the shaft drive joint 6, and the shaft 5 is inserted into the other end of the connection fitting 13. The shaft 5 and the cylindrical portion 29 of the shaft drive joint 6 are fixed by the connecting fitting 13 by the shaft drive joint fixing screw 24 and the shaft fixing screw 23.

  The shaft drive joint 6 is provided with a groove 31. Then, as shown in FIG. 1, the shaft 5 is rotated from the opening 17 provided in the frame 18 of the punching 15 by rotating the shaft driving joint 6 with a tool such as a screwdriver, and the damper driving unit 2 is further rotated. The provided damper shaft 4 rotates and the damper blade 1 opens and closes. Thereby, the air volume blown out from the filter unit 10 into the clean room can be adjusted. It should be noted that the air volume adjusting operation for rotating the shaft drive joint 6 can be performed from within the clean room.

FIG. 4 is a detailed cross-sectional view showing a second embodiment of the air volume adjusting mechanism.
The difference between the air volume adjusting mechanism of the second embodiment and FIG. 3 is that, instead of omitting the nylon washer 26 and the O-ring receiver 27, the frame 11 of the filter unit 10 in which the through portion 25a is formed is connected to the shaft drive joint. 6 is bent to the cylindrical portion 29 side to form an O-ring receiver 27b.

  The O-ring receiver 27b can be formed by drawing or punching the filter unit frame 11. In this case, the O-ring receiver 27b replaces the nylon washer 26 shown in FIG. 3, so that the nylon washer 26 becomes unnecessary. Other configurations are the same as those in FIG.

  According to the high-performance air filter built-in outlet filter unit of the above-described embodiment, the air volume adjustment mechanism is provided on the outside of the filter unit, so that the assembly work can be easily performed. Further, since the air volume adjustment mechanism is simple, the number of parts is small and the cost can be reduced. In addition, the air flow adjustment mechanism has a simple seal structure using an O-ring, and the O-ring receiver is spread outward by the repulsive force of the O-ring and is in close contact with the through-opening. Can be blocked.

The perspective view which shows the shape of embodiment of the air outlet filter unit with a built-in high performance air filter which concerns on this invention. The figure which shows the shape of the cross section of the blower outlet filter unit with a built-in high performance air filter which concerns on this invention. The figure which shows 1st Embodiment of the air volume adjustment mechanism of the blower outlet filter unit with a built-in high performance air filter which concerns on this invention. The figure which shows 2nd Embodiment of the air volume adjustment mechanism of the blower outlet filter unit with a built-in high performance air filter which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Damper blade | wing 2 Damper drive part 3 Damper duct part 4 Damper shaft 5 Shaft 6 Shaft drive joint 6a Head part 6b Groove part 7 Air filter 8 Filter clamping bolt 9 Filter clamping bracket 10 Filter unit 11 Frame 12 Filter clamping nut 13 Connection Metal fitting 14 Tightening U nut 15 Punching 16 Punching mounting screw 17 Opening 18 Punching frame 19 Filter mounting frame 20 Lower opening 21 Metal fitting 22 Ceiling material 26 Nylon washer 27, 27b O-ring receiver 28 O-ring 29 Cylindrical part 30 Screw part 31 Groove 40 Tapered 100 High performance air filter built-in outlet filter unit

Claims (5)

In the air outlet filter unit with a built-in high-performance air filter that filters the air from the upper inlet through an air filter and discharges it from the lower air outlet,
A cubic filter unit having the air filter mounted therein;
An air volume adjusting damper blade provided in the damper duct of the inlet;
A damper shaft drive section for driving a damper shaft of the air volume adjusting damper blade;
A shaft drive joint attached to the tip of a shaft depending from the damper shaft drive unit;
Possess the O ring attached in the groove between the threaded portion and the head portion of the shaft drive coupling,
Rukoto said in a through hole provided in the frame portion of the air outlet side of the filter unit with mounting the shaft drive coupling, has an O-ring received is provided between the frame portion of the O-ring and the through-hole A high-performance air filter built-in air outlet filter unit. In the air outlet filter unit with a built-in high-performance air filter that filters the air from the upper inlet through an air filter and discharges it from the lower air outlet,
A cubic filter unit having the air filter mounted therein;
An air volume adjusting damper blade provided in the damper duct of the inlet;
A damper shaft drive section for driving a damper shaft of the air volume adjusting damper blade;
A shaft drive joint attached to the tip of a shaft depending from the damper shaft drive unit;
An O-ring attached to a groove between the screw portion and the head portion of the shaft drive joint;
And wherein the through hole provided in the frame portion of the air outlet side of the filter unit with mounting the shaft drive coupling, O-ring receiving by bending the frame portion of the through hole on the inside is formed high-performance air filter built outlet filter unit you. The high-performance air filter built-in outlet filter unit according to claim 2 , wherein the O-ring receiver is formed by drawing or punching the frame portion. And inserting the tightening nut through a washer to the threaded portion of the shaft drive coupling, wherein the shaft drive coupling in claim 1 or claim 2, characterized in that fixed to the frame portion of the through hole High performance air filter built-in air outlet filter unit. The air outlet filter unit with a built-in high-performance air filter according to claim 1 or 2 , wherein a tip portion of the O-ring receiver is tapered.

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