CA-3173900-C - CLEAN ROOM FACILITY

Abstract

A clean room facility which prevents an insect from entering a clean room at a low cost is provided. The clean room facility includes: a finish sheet that is provided on an upper side of a floor base of the clean room and forms a floor surface of the clean room; and a base sheet that is provided between the floor base and the finish sheet. The base sheet: is provided also under a panel member which serves as a side wall of the clean room; and is extended to a vicinity of an exterior wall of a building including the dean room.

Inventors

• Noritoshi NISHIMURA
• Nobuhiro IMAGUCHI
• Yuuiti SATO

Assignees

• HITACHI GLOBAL LIFE SOLUTIONS, INC.

Dates

Publication Date

20260505

Application Date

20210916

Claims (8)

1. CLAIMS 1. A clean room facility, comprising; a first sheet that is provided on an upper side of a floor base of a clean room and forms a floor surface of the clean room; and a second sheet that is provided between the floor base and the first sheet, wherein the second sheet is extended to a vicinity of an exterior wall of a building including the clean room; and is provided also under a panel member which serves as a side wall of the clean room and/or under an exterior frame of a door of the clean room, wherein the second sheet is bonded to an upper surface of the floor base and an edge of the second sheet is bonded to a lower end of a wall surface of the exterior wall or is bonded to a step part provided at the exterior wall.
2. 2. The clean room facility according to claim 1, wherein the door includes a frame having a hollow inside, and wherein the second sheet is provided also under the frame.
3. 3. The clean room facility according to claim 2, wherein the frame includes an opening on a bottom face thereof, and wherein the hollow inside and the opening of the frame are made to communicate with each other.
4. 4. The clean room facility according to claim 1, further comprising a seal member that is provided near an edge of a contact face on which the exterior frame comes in contact with the second sheet. 23 Date Rei;ue/Date Received 2024-06-11
5. 5. The clean room facility according to claim 4, wherein the seal member provided near the edge of the contact face on a side nearer the clean room, of the exterior frame is joined to the first sheet.
6. 6. The clean room facility according to claim 1, wherein the building includes a plurality of the clean rooms, and wherein the second sheet as one unit is provided on a plurality of the clean rooms.
7. 7. The clean room facility according to claim 1, wherein the exterior wall is provided around the building, and wherein the second sheet is extended to a vicinity of a lower end of a wall surface on a side nearer the clean room, of the exterior wall.
8. 8. The clean room facility according to claim 1, wherein a material of which the second sheet is made contains vinyl chloride resin. 24 Date Rei;ue/Date Received 2024-06-11

Description

TECHNICAL FIELD [0001] CLEAN ROOM FACILITY The present invention relates to a clean room facility. BACKGROUND ART [0002] A clean room at a high air cleanliness level is used in various fields such as regenerative medicine and manufacturing of pharmaceutical products, semiconductors, and precision machines. As one of techniques for preventing insects from entering a clean room, Patent Document 1 discloses that "an apparatus for preventing insect invasion for preventing the insect from invading an area to be objected through a floor surface" is provided. Patent Document 2 discloses grid partition for clean rooms consisting of panel-like tabular wall elements and elongated connecting and connecting elements. Patent Document 3 discloses a sterile room structure having an air wall suspended from a purlin. The air wall and an outer wall and fixed walls comprise panels of high density phenolic resin construction. The panels are machined along the side edges to provide recesses for interengagement. RELATED ART DOCUMENTS PATENT DOCUMENT [0003] Patent Document 1: Japanese Laid-Open Patent Application, Publication No. 2011-223926 Patent Document 2: DE 3616896 A1 Patent Document 3: EP O 812 969 A1 1 Date Rei;ue/Date Received 2024-06-11 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION [0004] The apparatus for preventing insect invasion disclosed in Patent Document 1 includes an air blower in an underfloor space so as to clear off insects using air pressure of the air blower. The above-described structure in which the underfloor space is provided exclusively for the air blower increases a cost of a clean room facility. Additionally, it is difficult to, for example, install an air blower newly in a space under an existent floor base. [0005] In light of the described above, the present invention has been made in an attempt to provide a clean room facility which prevents an insect from entering the clean room at a low cost. MEANS FOR SOLVING THE PROBLEMS [0006] A clean room facility includes; a first sheet that is provided on an upper side of a floor base of a clean room and forms a floor surface of the clean room; and a second sheet that is provided between the floor base and the first sheet. The second sheet is provided also under a panel member which serves as a side wall of the clean room and is extended to a vicinity of an exterior wall of a building including the clean room. The second sheet is bonded to an upper surface of the floor base and an edge of the second sheet is bonded to a lower end of a wall surface of the exterior wall or is bonded to a step part provided at the exterior wall. Other means for solving the problems will be described in an embodiment of the present invention. ADVANTAGEOUS EFFECTS OF THE INVENTION [0007] The present invention can provide a clean room facility which prevents an insect from entering the clean room at a low cost. 2 Date Rei;ue/Date Received 2024-06-11 BRIEF DESCRIPTION OF THE DRAWINGS [0008] FIG. 1 is a diagram for explaining a layout of rooms in a clean room facility according to an embodiment of the present invention. FIG. 2 is a partial cross sectional diagram illustrating the clean room facility according to the embodiment. FIG. 3 is a partial exploded perspective diagram illustrating the clean room facility according to the embodiment. FIG. 4 is another partial cross sectional diagram illustrating the clean room facility according to the embodiment. FIG. 5 is a diagram for explaining a range in which a base sheet is disposed, when viewed from the above, in the clean room facility according to the embodiment. FIG. 6A is a cross sectional diagram illustrating a clean room facility including an exterior wall, a floor base, and a base sheet according to a first variation of the present invention. FIG. 68 is a cross sectional diagram illustrating a clean room facility including an exterior wall, a floor base, and a base sheet according to a second variation of the present invention. FIG. 6C is a cross sectional diagram illustrating a clean room facility including an exterior wall, a floor base, and a base sheet according to a third variation of the present invention. FIG. 6D is a cross sectional diagram illustrating a clean room facility including an exterior wall, a floor base, and a base sheet according to a fourth variation of the present invention. FIG. 7 is a partial cross sectional diagram illustrating a clean room facility according to a comparative example of the present invention. 3 Date Rei;ue/Date Received 2024-06-11 EMBODIMENTS FOR CARRYING OUT THE INVENTION [0009] <<Embodiments>> FIG. 1 is a diagram for explaining a layout of rooms in a clean room facility 100 according to an embodiment of the present invention. In FIG. 1, an open dashed arrow shows a direction in which air flows when a door of interest (for example, a door Om) is opened. Description below is made assuming that, as an example, a case where the clean room facility 100 is used as a fac