JP2006317048A - Clean room - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To considerably reduce an operation cost while ensuring high cleanliness in a center region when cleanliness demanded in the center region in a room is high. <P>SOLUTION: This clean room is provided with a blowoff port 10 for blowing off clean air downward, on the ceiling side, and exhaust ports 14 for exhausting indoor air to the outdoors from the side, in a peripheral wall 1 or near a floor face in its vicinity. The inside of the room is partitioned into the center region 16 where demanded cleanliness is high, and a peripheral region 17 surrounding the center region, in a plan view, and the distribution of blowoff air volume per unit area from the blowoff port can be set so that minimum blowoff air volume Qmin in the center region is more than maximum blowoff air volume Q1 in the peripheral region and that blowoff air volume in the center region becomes more toward the boundary side with the peripheral region than the region center part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a clean room in which a blowout port capable of blowing clean air downward is provided on the ceiling side, and an exhaust port capable of discharging indoor air from the side to the outside is provided near a peripheral wall or a floor surface in the vicinity thereof.

In the technology related to clean rooms, conventionally, the room has been divided into areas with high required cleanliness and areas with low required cleanliness, so that clean air can be supplied efficiently and operating expenses can be reduced. In addition, a technique has been proposed in which the amount of clean air blown per unit area from the blowout port is set so as to be set to a substantially constant amount of air that can ensure the required cleanliness for each region (see, for example, Patent Document 1). ).
Therefore, for example, in the clean room for surgery, the above-described conventional technique is applied so that the operating cost can be suppressed, and the blowout port 10 that can blow clean air downward is provided on the ceiling side as in the comparative example shown in FIG. A room in which the exhaust port 14 is provided in the peripheral wall 1 at a height lower than the upper surface of the operating table 2 is provided near the operating table 2 where the required cleanliness is high. The high clean area 20 is divided into a clean area 20 and a low clean area 21 that is adjacent to the high clean area 20 and has a low required cleanliness. It is conceivable that the blown air volume Q2 in the above can be set to a substantially constant air volume that is larger than the blown air volume Q1 in the low clean region 21.

Japanese Patent Laid-Open No. 9-257289

However, it is necessary to set so that the clean air is blown out at a substantially constant air volume over the entire high clean area only by applying the above-described conventional technology, and there is room for improvement in suppressing the operation cost.
The present invention has been made in view of the above circumstances, and when the required cleanliness is high in the central area of the room, it is possible to greatly reduce the operating cost while ensuring high cleanliness in the central area. The purpose is to do so.

  The first characteristic configuration of the present invention is provided with a blowout port on the ceiling side through which clean air can be blown downward, and an exhaust port through which room air can be discharged from the side to the outside is provided near the peripheral wall or the floor surface in the vicinity thereof In a certain clean room, the room is partitioned into a central region having a high required cleanliness in plan view and an outer peripheral region surrounding the central region, and the distribution of the blown air volume per unit area from the outlet is determined. The minimum blown air volume in the central area is larger than the maximum blown air volume in the outer peripheral area, and can be set so that the boundary side with the outer peripheral area in the central area is larger than the central area. In the point.

[Action and effect]
The room is divided into a central area with high required cleanliness and a peripheral area with low required cleanliness surrounding the central area in plan view. Is set so that the minimum blown air volume in the central region is larger than the maximum blown air amount in the outer peripheral region, so that the minimum blown air amount in the central region is larger than the maximum blown air amount in the outer peripheral region. By setting the air in the central region where the blown air volume is greater than the outer peripheral region, the exhaust gas is provided near the peripheral wall along the outer boundary of the outer peripheral region or near the floor surface from the central region through the outer peripheral region. A flow of air to the mouth can be formed.
As a result, the air in the outer peripheral area where the blown air volume per unit area is smaller than that in the central area is guided to the air flow in the central area, and does not flow into the central area where the blown air volume is large, but flows into the exhaust port. This makes it easier for germs and dust floating in the outer peripheral region to enter the central region.
As described above, in consideration of the point that it is difficult for germs and dust floating in the outer peripheral region to enter the central region, the distribution of clean air blowing air volume per unit area from the outlet is determined in the central region. Since it can be set so that the boundary side with the outer peripheral area is larger than the central part of the area, the distribution of the blown air volume is set so that the boundary side with the outer peripheral area in the central area is larger than the central part of the area. By doing so, it is possible to prevent the entry of germs and dust floating in the air near the boundary between the outer peripheral region and the central region, while reducing the amount of clean air supplied to the entire central region.
Therefore, when the cleanliness required in the central area of the room is high, the operating cost can be greatly suppressed while ensuring high cleanliness in the central area.
The central region in the present invention does not necessarily mean only a region including the center of the room in plan view, but a region (place) where the required cleanliness is higher than the surrounding region (outer peripheral region). ), And the outer boundary of the region is a region (place) that is separated from the peripheral wall by a passage, equipment storage, etc. Therefore, in a large room, it is located near the end of the room Also included.

  According to a second characteristic configuration of the present invention, the room is partitioned into a plurality of the central regions and the outer peripheral region surrounding the central regions in plan view.

[Action and effect]
Since the room is partitioned into a plurality of central areas that require a high degree of cleanliness in plan view and an outer peripheral area that surrounds these central areas, a plurality of areas that require a higher degree of cleanliness than the surrounding areas. When present, a high cleanliness can be ensured for each region where the required cleanliness is high.
Therefore, a required high cleanliness can be efficiently ensured as compared to a case where a plurality of areas having a high required cleanliness are grouped into a series of areas and a high cleanliness is ensured collectively.

  According to a third feature of the present invention, an operating room is partitioned into the central region surrounding the operating table and the outer peripheral region surrounding the central region, and the exhaust port is located at a height lower than the upper surface of the operating table. This is the point that is provided.

[Action and effect]
The operating room is divided into a central region surrounding the operating table and an outer peripheral region surrounding the central region, and an exhaust port is provided at a height lower than the upper surface of the operating table. It is possible to efficiently ensure the cleanliness of the region higher than the upper surface of the table, that is, the region where the required cleanness is particularly high.

  According to a fourth characteristic configuration of the present invention, the air outlet is divided into a plurality of divided air outlets, and an air volume adjusting means capable of adjusting the air outlet air volume is provided for each of the divided air outlets.

[Action and effect]
The clean air outlet is divided into a plurality of divided outlets, and air volume adjusting means is provided for each of the divided outlets, so that the amount of clean air per unit area from the outlet can be adjusted. It is easy to change and set the distribution, and even if necessary personnel and equipment are arranged according to the contents of indoor work, for example, the contents of surgery, it is easy to appropriately set the range of the required central region with high cleanliness.
Also, in the time zone before and after performing work requiring high cleanliness in the central area, the distribution of the blowing air volume over the entire blowing area is divided into the blowing air volume of the divided blowing openings in the central area and the divided blowing openings in the outer peripheral area. It is possible to increase or maintain the cleanliness of the entire room by adjusting to a flat air volume distribution that is substantially the same as the blowout air volume.

  A fifth characteristic configuration of the present invention is that the air volume adjusting means is configured by a damper whose air path resistance is adjustable.

[Action and effect]
Since the air volume adjusting means is composed of a damper whose air path resistance can be adjusted, the blown air volume can be easily adjusted without particularly adjusting the rotational speed of the blower or the like.

  A sixth characteristic configuration of the present invention is that the air volume adjusting means is constituted by a blower capable of adjusting an air flow rate.

[Action and effect]
Since the air volume adjusting means is composed of a blower capable of adjusting the air flow rate, the drive energy of the air blower can be increased or decreased to adjust the air flow rate, and the operating cost can be further suppressed.

Embodiments of the present invention will be described below with reference to the drawings. In addition, the part shown with the same code | symbol as a comparative example in drawing has shown the same or equivalent part.
[First Embodiment]
1 and 2 show a surgical clean room as a clean room according to the present invention. An operating table 2 is installed at a substantially central portion of a room partitioned by a peripheral wall 1 consisting of four side walls 1a into a substantially square shape, and clean air is supplied. It is equipped with an air conditioning unit 3 that circulates into the room.

  The air conditioning unit 3 includes a circulation fan 8 that includes a clean air blowing chamber 5 installed on the ceiling 4 side and an indoor air suction chamber 7 installed on the peripheral wall 1 side near the floor 6. Are connected by a duct 9 provided so that clean air can be circulated and supplied to the room by driving the circulation fan 8.

  The blow-out chamber 5 is provided with a blow-out port 10 through which clean air can be blown out substantially vertically downward so as to open downward over substantially the entire surface on the ceiling 4 side, and a high-performance filter 11 such as HEPA is provided through the blow-out port. 10 is provided so as to be able to supply clean air that has passed through the filter 11 and has been purified to the room.

  Further, the inside of the blowing chamber 5 is divided into a lattice pattern at substantially equal intervals to divide the blowing port 10 into a plurality of divided blowing ports 12, and to adjust the air volume for each divided blowing port 12. The airflow resistance as a means is connected to the duct 9 via an adjustable damper 3, and the amount of blowing air per unit area for each divided blowing port 12 can be adjusted by the operation of each damper 13.

  The suction chamber 7 is installed corresponding to each of a substantially central portion in the width direction of each side wall 1a and a corner portion where the side walls 1a intersect each other. An exhaust port 14 that can be sucked and discharged to the outside of the room is provided near the floor surface of the peripheral wall 1 so as to open toward the room at a height lower than the upper surface of the operating table 2.

  Then, the room is partitioned into a central region 16 surrounding the operating table 2 and the operator 15 and an outer peripheral region 17 surrounding the central region 16 in a ring shape in plan view, and shown in FIG. As described above, the distribution of the blown air volume per unit area from the blower outlet 10 is set so that the blown air quantity Q1 in the outer peripheral region 17 is substantially constant in units of the divided blower outlets 12, and the minimum blown air amount Qmin in the central region 16 is set to the outer periphery. It is set so that the maximum blown air volume in the region 17, that is, larger than the substantially constant blown air amount Q 1, and the boundary side with the outer peripheral region 17 in the central region 16 becomes the maximum blown air amount Qmax. It is provided so that the boundary side with the region 17 can be set to be larger than the center of the region.

[Second Embodiment]
FIG. 3 shows another embodiment of the clean room according to the present invention, in which a shielding material 18 such as a transparent sheet surrounding the central region 16 is hung from the ceiling 4 side substantially along the boundary between the central region 16 and the outer peripheral region 17. Intrusion of germs and dust floating in the air in the region 17 into the central region 16 can be effectively prevented.
Other configurations are the same as those of the first embodiment.

[Third Embodiment]
FIG. 4 shows another embodiment of the clean room according to the present invention, and a shielding material 18 such as a transparent sheet surrounding the central region 16 is provided between the floor surface 6 and substantially along the boundary between the central region 16 and the outer peripheral region 17. It is installed on the floor surface 6 side with a gap.
Other configurations are the same as those of the first embodiment.

[Fourth Embodiment]
FIG. 5 shows another embodiment of the clean room according to the present invention. Instead of the circulation fan 8, the blowout chamber 5 is provided for each of the divided blowout ports 12 via a blower 19 which can adjust the blown amount as an air flow adjusting means. The air is connected to the duct 9 so that clean air can be circulated and supplied to the room by driving each blower 19, and the distribution of the blown air volume per unit area from the blower outlet 10 by adjusting the blown air amount by each blower 19. Can be set in units of 12 divided outlets.
Other configurations are the same as those of the first embodiment.

[Fifth Embodiment]
FIG. 6 shows another embodiment of the clean room according to the present invention, in which the distribution of the blown air volume per unit area from the blower outlet 10 is set to be substantially constant with the blown air quantity Q1 in the outer peripheral region 17 in units of the divided blower openings 12. The minimum blown air amount Qmin in the central region 16 is larger than the maximum blown air amount in the outer peripheral region 17, that is, the substantially constant blown air amount Q1, and the boundary side with the outer peripheral region 17 in the central region 16 becomes the maximum blown air amount Qmax. In this way, the central region 16 can be set so that the boundary side with the outer peripheral region 17 is larger than the central portion of the region, and the blowing air volume Qa from the divided blowing ports 12a in the central portion of the central region 16 is set. , Set larger than the blowing air volume Qb (Qmin) from the surrounding divided outlet 12b And Aru.
Other configurations are the same as those of the first embodiment.

[Sixth Embodiment]
7 and 8 show another embodiment of the clean room according to the present invention. For example, in order to perform a living organ transplantation operation or the like, the room in which two operating tables 2 are installed is viewed in plan view in the operating table 2. And the unit from the outlet 10 in each of the central region 16 and the outer peripheral region 17 is divided into two central regions 16 corresponding to each operating table 2 surrounding the operator 15 and an outer peripheral region 17 surrounding the central region 16. The distribution of the blowout air volume per area is provided so as to be set in the same manner as in the first embodiment in units of the divided blowout ports 12.
Other configurations are the same as those of the first embodiment.

[Other Embodiments]
1. In the clean room according to the present invention, the discharge port may be provided in the vicinity of the peripheral wall separately from the peripheral wall, for example, by arranging the suction chamber on the indoor side along the lower part of the peripheral wall.
2. In the clean room according to the present invention, even if the discharge port is provided corresponding to only the substantially central portion in the width direction of the side wall among the peripheral walls composed of a plurality of side walls, only the corner portion where the side walls intersect is provided. It may be provided.
3. The clean room by this invention may be provided so that the indoor air discharged | emitted out of the room may not be circulated to a blower outlet.
4). The clean room according to the present invention may be provided so that the distribution of the amount of blown air per unit area from the blowout port can be set so that the amount of blown air in the outer peripheral region increases toward the boundary with the central region.
5. The clean room according to the present invention is not limited to an operating room, and may be implemented in various clean rooms in which a work place requiring high cleanliness is provided in the central region of the room, such as a medicine preparation room and a laboratory.

Schematic vertical section of clean room Plan view showing schematic layout of clean room Schematic longitudinal sectional view showing the second embodiment Schematic longitudinal sectional view showing the third embodiment Schematic longitudinal sectional view showing the fourth embodiment Schematic longitudinal sectional view showing the fifth embodiment Schematic longitudinal sectional view showing the sixth embodiment The top view which shows schematic arrangement of 6th Embodiment Schematic longitudinal sectional view showing a comparative example

Explanation of symbols

2 Operating table 10 Air outlet 12 Divided air outlet 14 Exhaust outlet 16 Central area 17 Outer peripheral area Q1 Maximum air volume Qmin Minimum air volume

Claims (6)

A clean room is provided with a blowout port on the ceiling side that can blow clean air downward, and an exhaust port that can discharge indoor air from the side to the outside of the room near the peripheral wall or the floor near it,
The room is partitioned into a central area where the required cleanliness is high and a peripheral area surrounding the central area in plan view,
The distribution of the blown air volume per unit area from the blower outlet is such that the minimum blown air volume in the central region is larger than the maximum blown air amount in the outer peripheral region, and the region closer to the boundary with the outer peripheral region in the central region. A clean room that can be set to be larger than the center.   The clean room according to claim 1, wherein the room is partitioned into a plurality of the central regions and the outer peripheral region surrounding the central regions in plan view. A room for surgery is divided into the central region surrounding the operating table and the outer peripheral region surrounding the central region,
The clean room according to claim 1 or 2, wherein the exhaust port is provided at a height lower than an upper surface of the operating table.   The clean room according to any one of claims 1 to 3, wherein the blowout port is divided into a plurality of divided blowout ports, and an air volume adjusting means capable of adjusting the blowout air amount is provided for each of the divided blowout ports.   The clean room according to claim 4, wherein the air volume adjusting means is constituted by a damper whose air path resistance is adjustable.   The clean room according to claim 4, wherein the air volume adjusting means is constituted by a blower capable of adjusting an air flow rate.

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