JPH0356825Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used in cases where a clean environment is required for industrial production or research experiment equipment.
This relates to a clean room using a retractable Jiyabara house.

[Conventional technology] As shown in Figure 9, a conventional clean room
A work room a is formed by placing a ceiling on side walls that are fixed to the floor and surround on four sides, and a return duct b is connected to one side wall of the work room a via a prefilter c, and from the return duct b Exhaust air from the outside air intake duct d is mixed with the outside air from the outside air intake duct d, and the mixture is supplied into the work chamber a from the supply duct f through the main filter g by the air conditioner e. In the figure, h and i are prefilters, j is a partial exhaust port, k is a mixing chamber, and l is a pressure regulating damper.

As described above, conventional clean rooms require a robust structure and high airtightness, which not only results in high construction costs, but also poses various problems as described below.

It is a fixed type with a low ceiling, and the entrance is small, making it difficult to carry in and out, making it particularly difficult to use for large equipment that can only be carried in and out using transportation equipment such as an overhead crane or hawk lift.

Since the joining parts m of constituent materials such as walls, ceilings, and floors require airtightness, the sealing must be ensured.

Many of the constituent materials generate dust, and to prevent this, special materials must be selected or coatings must be applied.

It is difficult to hear voices and the lighting is poor.

A pressure regulating damper l is required to regulate the internal pressure.

Since the airflow in the room is not smooth, a stagnation area n occurs, and the distribution of cleanliness is poor.

Relatively large particles of dust accumulate in the dead spaces o at the four corners.

[Problems to be solved by the invention] This invention solves the problems of the conventional clean room mentioned above, makes it easy to carry equipment in and out, maintains a uniform level of cleanliness, and enables construction at low cost. This is what we are trying to do.

[Means for Solving the Problems] The present invention includes a structure in which a plurality of gate-shaped supports are mounted on parallel rails so that they can be moved across the rails by a plurality of rollers that contact the rails from the top and both sides. A bendable membrane body is arranged on the outside of the plurality of pillars so as to integrally cover each pillar, and a skirt-like membrane flapper that reaches the floor is provided on the outside of both lower ends of the membrane body so that it can be expanded and contracted. a bellows that can be opened and closed, fixed support frames are provided at both ends of the bellows so that an airtight space can be formed by each fixed support frame and a bellows that can be opened and closed, and ducts are connected to both fixed support frames. The clean room is characterized in that each of the ducts is connected to an air conditioner so that air in the closed space can be circulated through a filter.

[Function] The bellows, which expands and contracts by moving on the rail, is designed to open on one side or both sides, so a wide opening can be obtained.

In addition, since the bellows is formed of an integral membrane, it has extremely good sealing performance, and the skirt-like membrane flapper makes it possible to adjust the internal pressure and discharge accumulated dust, resulting in uniform cleanliness.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

1 to 5 show an embodiment of the present invention, in which a pair of fixed support frames 1, erected at a predetermined interval,
A pair of rails 4 are laid in parallel on the floor 3 between the two spaces so that they have the same width as the fixed support frames 1 and 2, and a gate-shaped support 5 is placed on the rails 4 with rollers 6, 7, 8. A plurality of them are placed so that they can be moved astride each other. The relationship between the rollers 6, 7, 8 and the rail 4 is such that the center roller 6 rolls on the upper surface of the rail 4, and the left and right rollers 7, 8 support the rail 4 from both sides, due to fluctuations in internal pressure. Prevents wheels from coming off.

A flexible membrane body 9 is provided on the outside of the plurality of pillars 5,
The pillars 5 are arranged integrally so that the intervals are approximately equal, and skirt-like membrane flappers 10 having a length that reaches the floor surface 3 are integrally provided on the outside of both lower ends of the membrane body 9 by seaming. Expandable bellows 11
has been formed. Both ends of the bellows 11 are tightly fixed to the fixed support frames 1 and 2 on both sides of the husband and husband, and an opening/closing support frame 12 is connected to the middle part of the bellows 11 and can be separated.
13 is provided so that a sealed space can be formed by the fixed support frames 1 and 2 and the bellows 11 which can be opened and closed.

A return grill 14 is provided approximately at the center of the one fixed support frame 1, a return duct 15 is connected to the return grill 14, and the other side of the return duct 15 is connected to a mixing chamber 16. An outside air intake duct 18 equipped with a prefilter 17 is connected to 16.

An air conditioner 19 is connected to the mixing chamber 16, and a supply duct 2 connected to the air conditioner 19.
0 allows clean air to be fed into the bellows 11 from the other fixed support frame 2 side through the pre-filter 21 and the main filter 22 in sequence.

With the above configuration, the bellows 11 has a flexible membrane body 9, so the opening/closing support frame 1 in the center
Because it opens on both sides by separating 2 and 13,
The ceiling and side walls can be opened with wide openings, allowing for easy loading and unloading of large equipment.

The membrane body 9 of the bellows 11 is flexible and each support column 5 can be smoothly moved on the rail 4 by the rollers 6, 7, 8, so that it can be easily opened and closed by hand.

When the bellows 11 is closed and the air conditioner 19 is operated, the air in the clean room 23 is discharged from the return grill 14, enters the mixing chamber 16 via the return duct 15, and is discharged from the outside air intake duct 18 in the mixing chamber 16. The outside air that has passed through the pre-filter 17 is taken in and mixed, passes through the pre-filter 21 and main filter 22 sequentially from the supply duct 20, enters the clean room 23, flows through the clean room 23, and is discharged from the return grill 14. and circulate.

By repeating the above cycle, dust is removed by the filters 17, 21, and 22, and the dust concentration temporarily decreases, resulting in cleanliness.

Here, a part of the clean air sent into the clean room 23 from the air conditioner 19 is released from the skirt-like membrane flapper 10 at the bottom of the membrane 9 all around the room, as shown in FIG. 6B. During the discharge, relatively large particles of dust deposited on the floor surface 3 are also ejected. Furthermore, when the air pressure in the room increases, the space between the floor surface 3 and the membrane flapper 10 expands as shown in FIG. In addition, indoor air pressure decreases,
When the indoor pressure is about to shift to negative pressure, the membrane flapper 10 comes into contact with the floor surface 3, as shown in FIG. 6A, and prevents outside air from flowing into the room.

Furthermore, when the pressure in the room decreases, not only does the membrane flapper 10 come into contact with the floor surface as described above, but the membrane body 9 is pushed by the outside air as shown in FIG. It deforms inward compared to normal, and the internal pressure is maintained constant.

FIG. 8 shows another embodiment of the present invention, in which the bellows 11 is not opened on both sides but on one side in a configuration substantially similar to that of the previous embodiment.

In the case of this embodiment as well, a clean room can be obtained as in the previous embodiment, and in particular, the opening width can be made large.

It should be noted that the clean room of the present invention is not limited to the above-described embodiments, and it goes without saying that various changes may be made without departing from the gist of the present invention.

[Effects of the Invention] As described above, the clean room of the present invention can produce various excellent effects as described below.

() Large openings are provided in the ceiling and side walls, making it easy to transport large equipment using overhead cranes, etc.

() Can be easily opened and closed manually.

() The ceiling, side walls, and skirt have a membrane structure and are integrated with seams, making them highly airtight.

() Due to the unique skirt structure installed at the bottom of the membrane body, when the internal pressure changes, the skirt lifts up, changing the amount of discharge and keeping the internal pressure constant. Additionally, relatively large particles of dust accumulated on the floor surface can be removed together with the discharge.

() The membrane body and lower skirt play the role of a pressure regulating damper, and when the indoor pressure tries to shift to the negative side when the ventilation is stopped or the door is opened, they contract and absorb it, keeping the internal pressure constant and absorbing the outside air. Prevent intrusion.

() The flapper effect of the skirt at the bottom of the membrane body makes the cleanliness distribution uniform. Therefore, it is possible to provide a large-scale clean room.

() Since there are no mating surfaces, there is no need for sealing work, and the lightweight and simple prefabricated construction method can be completed in a short period of time and at low cost.

() Easy to relocate.

() If a transparent membrane is used for the side wall, even if an accident occurs inside the room, it will be visible from the outside. Also, you can work in a bright and open atmosphere.

[Brief explanation of drawings]

Fig. 1 is an overall explanatory diagram of the clean room of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a view taken in the - direction arrow of Fig. 2, Fig. 4 is a detailed view of the part of Fig. 3, FIG. 5 is a view taken in the - direction of FIG. 2, and FIGS. Figures 7A and 7B are explanatory views showing the stopped and steady state of the membrane body in Figure 4, respectively. Figure 8 is a schematic explanatory view of another embodiment of the clean room of the present invention. Figure 9 is a diagram of the conventional clean room. An explanatory diagram of a clean room is shown. 1 and 2 are fixed support frames, 3 is the floor surface, 4 is the rail, 5
are pillars, 6, 7, and 8 are rollers, 9 is a membrane body, 10 is a membrane flapper, 14 is a return grill, 15 is a return duct, 16 is a mixing chamber,
20 is a supply duct, 22 is a main filter, and 23 is a clean room.

Claims (1)

[Scope of utility model registration request] A plurality of gate-shaped pillars are placed on parallel rails so that they can be moved across them by rollers, and a bendable membrane body is arranged on the outside of the plurality of pillars so as to integrally cover each pillar. , a skirt-like membrane flapper extending to the floor is provided on the outer side of both lower ends of the membrane body to form an expandable bellows, and a fixed support frame is provided at each side end of the bellows, and the mechanism can be opened and closed with each fixed support frame. A sealed space can be formed with possible bellows, ducts are connected to both fixed support frames, and each duct is connected to an air conditioner so that air in the sealed space can be circulated through a filter. A clean room characterized by: