JPS61175424A - Clean room - Google Patents

Abstract

PURPOSE:To enable to shut off perfectly the inside of a room from the outside by a method wherein a clean room is structured in air tight manner by forming each floor, wall and ceiling having respective double structure provided with a hollow internal part, an air pressure inside of each double structure is kept higher than that of the outside. CONSTITUTION:A clean room 10 is formed of a floor 11, a wall 12 and a ceiling 13, those three parts are structured by attaching an outer side plate 15 to an inner side plate 16 with adequate space by a connecting member 17, thus, the clean room 10 is formed in air tight manner by a double structure provided with a hollow internal part 18, the internal part 18 is connected to an air supplying source 19, the air pressure in the internal part 18 in kept higher than that of the outside by supplying a pressurized air. By utilizing a transparent plate such as a transparent acrylic resin plate and the like for the outer side plate 15 and the inner side plate 16, the inside of the clean room 10 can be lightened and observed from the outside. The air pressure in the internal part 18 is sufficient by adding 15mm H2O to the atmospheric pressure, further, the safety can be improved more by supplying a sterilized gas instead of the air into the internal part 18.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is applicable to industrial clean rooms (ICRs) used as dust-free rooms in the electronics industry, etc., and as biologically clean rooms in biotechnology. This relates to bio-clean rooms (BCR).

(Prior art) Fig. 3 is a plan cross-sectional view showing an example of a conventional bioclean room. 4 is a circular corridor (semi-hot area) surrounding the bio-clean room 1 and the entrance compartment 3, 5 is the outer wall of this circular corridor 4, and 6 is a glove installed inside the bio-clean room 1. It's a box.

However, in order to prevent indoor biohazards (microbiological dangers), the conventional bioclean room 1 uses a pressure regulator 7 or the like to lower the pressure inside the bioclean room 1 than the outside pressure. This was to prevent harmful substances and bacteria from leaking outside.

(Problems to be solved by the invention) However, since the partition wall 2 of the conventional bioclean room 1 had a single layer structure, complete isolation is difficult, and in the unlikely event that harmful substances or bacteria leak outside the partition wall 2. Taking this into consideration, the bio-clean room 1 was surrounded by the bottom 4, making this part a semi-hot area.

For this reason, conventional bioclean room equipment requires a large area, and a glove box 6 must be installed due to the uncertainty of shielding, which also increases costs. .

Furthermore, if the air pressure inside the bio-clean room 1 is set to negative pressure as described above, opening and closing the door when emptying the room will be difficult due to the difference in air pressure between the inside and outside, and backup phenomena such as drainage will occur, making it extremely difficult to open and close the door. There was a problem in that it caused various hindrances to the work of people.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention configures the clean room as an airtight double structure in which the floor, walls and ceiling forming the clean room are hollow. A clean room is constructed by making the pressure inside the double structure higher than the pressure outside.

(Function) As described above, in the present invention, the floor, walls, and ceiling forming the clean room are configured as a double structure with a hollow interior to make the clean room airtight, and the air pressure inside the double structure is transferred to the outside. Even if there are holes or gaps in the floor, walls, or ceiling of the clean room, the air pressure inside the double structure is high and the air inside the double structure will not leak into the clean room or outside. Although it may leak out, air from inside or outside the clean room will never enter the double structure, so in any case, the inside and outside of the clean room can be completely shielded. Therefore, external dust will not enter the clean room, and there will be no fear that harmful substances, bacteria, etc. inside the clean room will leak outside.

(Example) The present invention will be described in detail below with reference to FIGS. 1 and 2. In the figure, 10 is a clean room, and 11 (see Figure 2)
is the floor, 12 is the wall, 13 is the ceiling, 14 (see Figure 1)
is a separate room for entry divided into three parts.

In this embodiment, the floor 11, walls 12, and ceiling 13 that form the clean room 10 are connected by connecting members 17 with the outer panel 15 and inner panel 16 spaced apart at appropriate intervals, thereby making the interior 18 hollow. The clean room 10 is airtightly configured as a double structure, and the inside 18 of this double structure is connected to a pressure air supply 1i19 to supply pressurized air, thereby transferring the air pressure in the inside 18 of the double structure to the outside. Make sure to hold it higher than the air pressure.

Note that 20 (see FIG. 2) is a support plate that supports the entire clean room 10, and 21 is a floor plate inside the clean room 10.

Furthermore, if the outer plate 15 and inner plate 16 forming the walls 12 and ceiling 13 are made of transparent plates such as transparent acrylic resin plates as necessary, it is convenient because the interior of the clean room 10 can be illuminated and observed from the outside. .

In addition, the pressure inside the double structure 18 is atmospheric pressure + 15 + em
It is sufficient if it is about HzO. Furthermore, if a sterilizing gas is supplied into the interior 18 instead of air, safety will be further improved.

(Effects of the Invention) As described above, in the present invention, the floor 11, walls 12, and ceiling 13 forming the clean room 10 are configured as a double structure in which the interior 18 is hollow, and the clean room 10 is airtightly constructed. Since the air pressure inside the structure 18 is higher than the outside air pressure, even if there are holes or gaps in the floor 11, walls 12, and ceiling 13 of the clean room 10, the air pressure inside the double structure 18 will be high. Double structure interior 18
Although air may flow out into the clean room 10 or outside, the air inside the clean room 10 or outside never enters the double-structured interior 18.
In any case, the inside and outside of the clean room 10 can be completely shielded. Therefore, external dust will not enter the clean room 10, and there will be no fear that harmful substances, bacteria, etc. inside the clean room 10 will leak outside. Therefore, according to the present invention, the cleanliness within the clean room 10 can be maintained reliably, and the biohazard prevention function can also be ensured.

Furthermore, since the biohazard prevention function is improved, there is no need to install a glove box in the clean room 10 as in the past, and a suit laboratory becomes possible, which not only simplifies work but also reduces costs.

Furthermore, according to the present invention, atmospheric pressure can be used instead of reducing the pressure inside the clean room as in the past, making it easier to open and close the door when people enter the clean room, and there is no back-up phenomenon of drainage, making it easier to carry out work. performance is significantly improved.

Furthermore, according to the present invention, there is no need to create an extra space such as a corridor around the clean room to create a semi-hot area as in the past, so the installation area of the clean room can be significantly reduced. This has the effect of significantly reducing the

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view showing an example of the clean room of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional plan view showing an example of a conventional bio-clean room. 10...Clean room 11...Floor 12...Wall 13...Ceiling 14...Entry compartment
15...Outer plate 16...Inner plate 17
...Connecting member 18...Inside of double structure 19...
Pressure air supply source patent applicant Aoki Construction Co., Ltd. Figure 3

Claims (1)

[Claims] 1. A clean room characterized in that the floor, walls, and ceiling forming the clean room are airtightly configured as a double structure with a hollow interior, and the air pressure inside this double structure is higher than the air pressure outside. .