JP2001301913A - Clean air leakage preventing mechanism in product delivery part between clean room and general zone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems that in a conventional structure of a product delivery part between a clean room and a general zone, a clearance always exists even if a delivery opening is minimized, so that much clean air flows from the clean room side to the general zone side, and thus running cost for air conditioning on the clean room side increases. SOLUTION: In this clean air leakage preventing mechanism in the product delivery part between the clean room and the general zone, the product delivery room 4 is formed between the clean room and the general zone, the product delivery openings 7 and 8 are formed in walls on the clean room side and the general zone side of the product delivery room, a cross plate 10 of the product is formed between these product delivery openings, a pair of rotors 12a and 12b having seal blades 11 projected on their outer peripheries at a predetermined interval are faced to each other on the right and left sides of the cross plate, the rotors are arranged so that tracks of the tips of the seal blades 11 of them contact with each other at one point, and the rotors are rotated simultaneously and oppositely so that the tips of their seal blades abut on each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a clean room.
The present invention relates to a clean air leak prevention mechanism in a product discharge section between general zones.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional example of a structure of a product carrying-out section between a clean room and a general zone. The figure shows the product unloading state, and a symbol a indicates a partition that separates the clean room side and the general zone side.
Constitutes a carry-out port b. The carry-out port b has, for example, a configuration such as a lifting shutter, and has an opening formed only when the product c is carried out. In order to carry out the product c through the carry-out port b, conveyors d and e are installed on both the clean room side and the general zone side, and a connecting plate f is installed between them. The unloading operation of the product in the above configuration is obvious from the figure, and the description is omitted.

When the product c is carried out from the clean room side to the general zone side in the product carrying-out section having the above-described structure, it is generally necessary to make the carry-out port b as small as possible and increase the indoor pressure on the clean room side. By
This prevents air pollution from the general zone side into the clean room.

[0004]

Even if the carry-out port b is made as small as possible, since there is a gap, clean air from the clean room side flows out to the general zone side, and especially the product c is located at the carry-out port b. If not, a large amount of clean air will flow out. As a result, the air-conditioning running cost on the clean room side increases. An object of the present invention is to solve such a problem.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a product carry-out room is formed between a clean room and a general zone, and a product carry-out room is provided on the clean room side and the general zone side of the product carry-out room. Along with forming the outlets, forming a product transfer plate across those product carrying-out ports, and installing a pair of rotating bodies opposed to each other on the left and right sides of the transfer plate with seal blades protruding at predetermined intervals on the outer periphery, The trajectories of the tips of the seal blades of the respective rotating bodies are arranged so as to be in contact at one point, and the respective rotating bodies are synchronously reversely rotated so that the tips of the respective seal blades are in contact at the aforementioned one contacted point. The present invention proposes a clean air leak prevention mechanism in a product discharge section between a clean room and a general zone.

According to the present invention described above, when the ends of the respective seal blades of the respective rotating bodies are in contact with each other, the air flows on the clean room side and the general zone side of the product discharge chamber by the seal blades. The blockage is released until the pair of sealing blades that are in contact move forward and away due to the progress of the rotation of the rotating body, and the next pair of seal blades move forward and contact with each other. And the amount of clean air flowing out of this is very small.

On the other hand, the product is collected in a space between a pair of adjacent seal blades, and moves along the crossover plate along with the space to be carried out.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
Referring to FIG. FIG. 1 is a schematic view of the mechanism of the present invention viewed from above, and FIG. 2 is an enlarged view of a main part of FIG.
FIG. 3 is a sectional view taken along line AA of FIG. First, in these figures, reference numeral 1 denotes a clean room, 2 denotes a general zone, and 3 denotes a partition therebetween. Code 4
Are product outlets formed between the clean room 1 and the general zone 2. The product outlets 7 and 8 are formed on the walls 5 and 6 of the product outlet 4 on the clean room 1 side and the general zone 2 side. A product 10 is provided across the product outlets 7 and 8 to form a transfer plate 10 for the product 9. On the left and right sides of the crossover plate 10, the seal blade 1
A pair of rotators 12a and 12b, each of which is provided with a protrusion 1, are disposed so as to face each other, and the trajectories 13a and 13b of the tips of the seal blades 11 of the respective rotators 12a and 12b are arranged so as to contact at one point. As shown in the drawing, a side wall 14 is provided on the crossover plate 10 at a position where the seal blade 11 does not collide. Reference numerals 15a and 15b denote respective rotating bodies 12
a, 12b, and these drive mechanisms 15
a and 15b are configured to rotate the rotating bodies 12a and 12b synchronously and reversely so that the tips of the sealing blades 11 abut at one point where the trajectories 13a and 13b abut.

In the above configuration, each drive mechanism 15
a and 15b, the respective rotating bodies 12a and 12b are synchronously rotated in opposite directions such that the tips of the respective sealing blades 11 abut at one point where the trajectories 13a and 13b come into contact, that is, the rotation on the left side in the figure. When the body 12a is rotated clockwise and the right rotating body 12b in the drawing is rotated counterclockwise, the state shown in FIG. 2, that is, the tips of the sealing blades 11 of the rotating bodies 12a and 12b abut. In the state,
The flow of air between the clean room 1 and the general zone 2 of the product unloading room 4 is blocked by the pair of seal blades 11.

When the rotating bodies 12a and 12b further rotate in the state shown in FIG. 2, the pair of sealing blades 11 which have been in contact with each other move forward and gradually separate, so that the flow of air between them is interrupted. The gap is released, and a gap through which air can flow is generated.

However, when the rotating bodies 12a and 12b are further rotated, the pair of adjacent sealing blades 11, which have been located on the rear side, move forward and come into contact with each other as in the state of FIG. Cut off.

The blocking of the air flow is released as described above because the rotating pair of rotating members 12a and 12b causes the pair of contacting seal blades 11 to move forward and separate, and the next pair of sealing blades 11 to move. It takes only a short time for the seal blade 11 to move forward and abut, so that the amount of clean air flowing out therefrom is very small.

On the other hand, the product 9 is, as shown in FIG.
It is accommodated in a space 16 between a pair of adjacent seal blades 11, and is moved and carried out along the crossover plate 10 as the space 16 moves.

[0014]

The present invention is as described above. Therefore, when products are carried out from the clean room side to the general zone side, the outflow of clean air from the clean room side to the general zone side is minimized, and the clean room side There is an effect that useless consumption of the air-conditioning running cost can be suppressed.

[Brief description of the drawings]

FIG. 1 is an explanatory view generally showing an embodiment of a mechanism of the present invention when viewed from above.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIGS. 4A and 4B show a conventional example of a configuration of a product unloading section between a clean room and a general zone, wherein FIG.
It is a line sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clean room 2 General zone 3 Partition 4 Product unloading room 5,6 Wall 7,8 Product unloading port 9 Product 10 Transition board 11 Seal blade 12a, 12 Rotating body 13a, 13b Track 14 Side wall 15a, 15b Drive mechanism

Claims (1)

[Claims] 1. A product unloading chamber is formed between a clean room and a general zone, a product unloading port is formed on a wall of the product unloading chamber on the clean room side and the general zone side, and a product is discharged over the product unloading port. A crossover plate is formed, and a pair of rotating bodies having sealing blades projecting at predetermined intervals on the outer periphery are installed on the left and right sides of the crossing board so as to face each other, and the trajectories of the tips of the sealing blades of the respective rotating bodies contact at one point. Wherein the rotating bodies are rotated in opposite directions synchronously so that the tips of the respective sealing blades come into contact with each other at the one point where the rotating bodies contact each other. Air leak prevention mechanism