WO2014025043A1

WO2014025043A1 - Rack aisle isolation structure

Info

Publication number: WO2014025043A1
Application number: PCT/JP2013/071721
Authority: WO
Inventors: 友広片山; 基温増井; 司郎早川; 超福光; 龍平楯
Original assignee: 日東工業株式会社; 株式会社Ｎｔｔファシリティーズ
Priority date: 2012-08-10
Filing date: 2013-08-09
Publication date: 2014-02-13
Also published as: CN104602767A; JP2014033903A; JP5998367B2

Abstract

Provided is a rack aisle isolation structure whereby, in a server room with an aisle between racks being an isolated space, fire extinguishing gas may be guided into the isolated space and supplied efficiently into each rack through the isolated space without a circulation flow discharge aperture being formed in line with the floor face of the isolated space. This rack aisle isolation structure, wherein a space which is disposed between racks is an isolated space (6) by a ceiling isolation member (4) and an aisle isolation member (3), comprises aperture mechanisms which form aperture parts in the ceiling isolation member, the aisle isolation member or the rack for, upon receipt of an external signal, drawing fire extinguishing gas from discharge nozzles which are disposed externally to the isolation spaces.

Description

Rack row passage shielding structure

The present invention relates to a rack row passage shielding structure in which a large number of electrical devices such as a data center are accommodated.

Fire extinguishing using fire extinguishing gas (inert gas or halogen gas, etc.) in order to avoid damage to equipment due to water discharge in the event of a fire in a rack row passage shielding structure that houses a large number of electrical equipment such as data centers A technique is disclosed (for example, Patent Document 1).

In a server room in which many electrical devices are accommodated such as a data center, a double floor structure in which the under floor can be used as a wiring space and an air-conditioning space is widely used. In addition, there is also disclosed a technique in which a fire-extinguishing gas ejection nozzle is provided, and digestion gas ejected under the floor is conveyed to the inside of an electrical device by a circulating air flow of conditioned air when a fire is detected.

However, in the technology described in Patent Document 2, the circulation airflow outlet from the underfloor air conditioning space and the circulation airflow inlet to the underfloor airconditioning space are both provided in accordance with the floor surface of the electrical equipment, In data centers and the like, doors and roofs are provided in the passages between each rack row on which a plurality of servers are mounted to form a shielding space, and cooling air from under the floor is supplied to the front of each rack through the shielding space. There are an increasing number of cases in which an airflow control technique (for example, Patent Document 3) that realizes an efficient air-conditioning environment by exhausting air from the opposite surface is used. In this case, a circulation airflow outlet and a circulation airflow inlet With the technique described in Patent Document 2 that is provided in conformity with the floor surface of the electric device, the fire extinguishing gas cannot be smoothly guided to the shielding space.

It is also possible to provide a fire-extinguishing gas ejection nozzle near the ceiling of the server room and to eject fire-extinguishing gas throughout the server room. There is a problem that the fire extinguishing gas is not guided into the inside of the rack, and the fire extinguishing gas cannot be efficiently guided into the essential rack.

JP 2011-115255 A JP-A-8-66487 JP 2004-184070 A

The object of the present invention is to solve the above-mentioned problem, and in a server room in which a passage between rack rows is a shielded space, the fire extinguishing gas is made into the shielded space without forming a circulating airflow outlet in accordance with the floor surface of the shielded space. Another object of the present invention is to provide a rack row passage shielding structure capable of efficiently supplying a fire extinguishing gas into each rack through the shielding space.

In one embodiment of the rack row passage shielding structure of the present invention made to solve the above problems, a plurality of racks are connected and arranged as a rack row, and a space adjacent to the rack row is arranged with a ceiling shielding member and a passage. A rack row passage shielding structure configured as a shielding space by a shielding member, wherein a fire extinguishing gas is received from an ejection nozzle provided outside the shielding space by receiving an external signal at any of the ceiling shielding member, the passage shielding member or the rack. An opening mechanism for forming an opening for drawing in, the opening mechanism receiving a sealing member for sealing the opening; a locking member for locking the sealing member; It comprises an unlocking mechanism that releases the locking of the locking member, and the sealing member is driven by its own weight to form an opening when the locking of the locking member is released. Is.

According to another embodiment of the present invention, in the rack row path shielding structure described above, the sealing member includes a rotating shaft, and when the locking of the locking member is released, the sealing member rotates around the rotating shaft. It moves and forms an opening part, It is characterized by the above-mentioned.

Another embodiment of the present invention is characterized in that, in the rack row passage shielding structure described above, the rotation shaft is arranged to be shifted from the center of gravity of the sealing member.

According to another embodiment of the present invention, in the rack row path shielding structure described above, the opening mechanism is provided at a position of the ceiling shielding member, and the opening mechanism is sealed in the depth direction perpendicular to the rotation axis. It has a panel member adjacent to a stop member, and this panel member is being fixed to the frame member of this opening mechanism, It is characterized by the above-mentioned.

According to another embodiment of the present invention, in the rack row passage shielding structure described above, the rotation shaft is disposed in a width direction of the rack row passage extending along the rack row, and the rack row passage of the sealing member is provided. The dimension in the width direction is substantially the same as the width dimension of the rack row passage.

According to another embodiment of the present invention, in the rack row path shielding structure described above, an air guide path communicating with the shielded space is provided at an upper part of the rack, and the opening is guided by a sealing member provided on a ceiling surface of the rack. It is characterized by being formed in the air passage.

Another embodiment of the present invention is characterized in that, in the rack row passage shielding structure described above, an intake fan is installed above the opening.

Another embodiment of the present invention is characterized in that, in the above rack row path shielding structure, when the locking member is released, the sealing member slides downward to form an opening. It is.

The rack row passage shielding structure according to the present invention is a server room having a passage adjacent to a rack row as a shielding space, and receives an external signal from any one of the ceiling shielding member, the passage shielding member, and the rack. With the configuration having an opening mechanism for forming the opening for drawing the fire extinguishing gas from the jet nozzle provided outside, the fire extinguishing gas is made into the shielding space without forming a circulating air flow outlet in accordance with the floor surface of the shielding space. The fire extinguishing gas can be efficiently supplied into each rack through the shielding space.

It is the whole fire extinguishing system explanatory drawing. FIG. 3 is an overall perspective view of a rack row and a shielding space formed between the rack rows of the first embodiment. It is a whole perspective view of the ceiling shielding member of Embodiment 1. It is explanatory drawing of the sealing member of Embodiment 1, and its locking member. It is explanatory drawing of the latch release mechanism of Embodiment 1. FIG. It is explanatory drawing which shows the modification of the latching member of Embodiment 1, and a latch release mechanism. It is explanatory drawing which shows the modification of the latching member of Embodiment 1, and a latch release mechanism. It is explanatory drawing which shows the modification of Embodiment 1. FIG. FIG. 6 is an explanatory diagram of a second embodiment. It is explanatory drawing of the latching member and latch release mechanism of Embodiment 3. It is explanatory drawing of Embodiment 3. FIG. It is explanatory drawing of Embodiment 3. FIG. It is explanatory drawing of Embodiment 4. FIG. FIG. 10 is an explanatory diagram of a fifth embodiment. It is explanatory drawing of Embodiment 6. FIG. FIG. 10 is an explanatory diagram of a modified example of the shielded space of the first to sixth embodiments. FIG. 10 is an explanatory diagram of a modified example of the shielded space of the first to sixth embodiments. FIG. 10 is an explanatory diagram of a modified example of the shielded space of the first to sixth embodiments. It is explanatory drawing of Embodiment 7. FIG. FIG. 10 is an explanatory diagram of an eighth embodiment. FIG. 10 is an explanatory diagram of Embodiment 9. It is explanatory drawing of Embodiment 10. FIG. It is explanatory drawing of Embodiment 10. FIG.

Hereinafter, preferred embodiments of the present invention will be described. In the following embodiment, a rack row passage shielding structure in a server room of a data center will be described.

(Embodiment 1)
In the server room 1, racks 2 (normally 19-inch racks) are arranged as rack rows. The floor inside the server room 1 has a double floor structure in which the under floor can be used as a wiring space and an air conditioning space.

As shown in FIG. 1, in order to separate the intake air and the exhaust air for cooling a large number of servers mounted on the rack 2, each of the spaces adjacent to the rack row is arranged as a rack row connecting a plurality of racks. A passage shielding member 3 provided at the end of the passage and a ceiling shielding member 4 covering an upper portion of the passage between the rack rows are provided in the passage between the rack rows, and the passage between the rack rows is used as a shielding space 6.

The cooling air cooled by the air conditioner 7 provided in the server room 1 is supplied to the shielded space 6 from under the floor 5 and sent into the rack from the shielded space of each rack 2. The air heated by the heat of the server in the rack is exhausted into the server room from the opposite surface of each rack 2, cooled again by the air conditioner 7 and circulated.

As shown in FIG. 1, the server room 1 is provided with a smoke sensor 8 as a fire detection means and a fire extinguishing gas ejection nozzle 9 that ejects a halogen gas or the like as a fire extinguishing gas in the event of a fire. The smoke sensor 8 is also installed in the shielded space 6.

The smoke sensor 8 and the fire extinguishing gas ejection nozzle 9 are connected to a fire alarm panel 10 disposed in the server room 1 by a signal line 11. The fire alarm panel 10 is further connected to the air conditioner 7 and an opening mechanism described later by a signal line 11. In addition, it is also possible to connect the door 3 and the fire alarm panel 10 with a signal line and control the opening of the door 3 based on the fire detection signal.

As shown in FIGS. 2 and 3, the ceiling shielding member 4 holds the transparent panel 19 with a pair of front and rear frame members 18 and left and right support plates 21. A member 12 is provided. The ceiling shielding member 4 is formed substantially the same as the width of each rack 2 and covers the passage between the rack rows corresponding to each rack 2. The ceiling shielding member 4 has a unit structure that can be replaced with an existing ceiling shielding member that does not include the sealing member 12.

As shown in FIG. 3, the sealing member 12 includes a rotation shaft 13 and rotates around the rotation shaft 13 to form an opening 24 in the shielding space 6. A support frame 16 fixed to the frame member 18 is disposed on the left and right sides of the sealing member 12, and a shaft hole 30 through which the rotation shaft 13 passes is provided.

The transparent panel 19 is not essential, and the sealing member 12 may be formed in the same size as the frame of the frame member 18, and shaft holes for receiving the rotation shafts 13 may be provided in the left and right support plates 21.

As shown in FIG. 4, an electromagnet 15 as a locking member is fixed to one frame member 18. The sealing member 12 normally closes the opening 24 by attracting and locking the iron piece 31 provided on the sealing member 12 by the electromagnet 15, but when the electromagnet 15 stops attracting by an external signal, FIG. As shown in FIG. 5, the locking with the sealing member 12 is released (locking release mechanism), and the sealing member 12 is driven by its own weight and rotates around the rotation shaft 13. The above-mentioned sealing member 12, the locking member, and the locking release mechanism constitute an opening mechanism that forms the opening 24. Even when the rotating shaft 13 is not arranged so as to be shifted from the center of gravity of the sealing member 12, a weight can be installed at the other end of the sealing member 12 and rotated around the rotating shaft 13. It is also possible to improve the airtightness by providing a packing on the contact surface between the sealing member 12 and the frame member 18.

In this embodiment, the rotating shaft 13 is arranged slightly shifted from the center of gravity of the sealing member 12, thereby restricting the direction of rotation due to the weight of the sealing member 12. Further, the maximum sag distance in a state where the sealing member 12 is rotated and suspended by its own weight is reduced as compared with the case where the end of the sealing member 12 is supported by the rotation shaft 13 as shown in FIG. Even when there is an operator in the shielding space 6 when the unlocking mechanism is activated due to malfunction or the like, contact with the sealing member 12 can be avoided.

In this embodiment, the locking member is composed of the electromagnet 15, but it may be a locking pin 14 driven by a solenoid as shown in FIG. That is, when the locking between the locking pin 14 and the sealing member 12 is released by an external signal (locking release mechanism), the sealing member 12 is driven by its own weight and rotates around the rotation shaft 13.

Furthermore, the locking member and the locking release mechanism may be composed of different members. For example, as shown in FIG. 7, the sealing member 12 is locked by a spring member 32 provided on the frame member 18, and a pressing member 33 driven by a solenoid provided on the frame member 18 is provided on the sealing member 12. It is good also as a latch release mechanism. In this structure, when the pressing member 33 presses the sealing member 12 by an external signal, the spring member 32 and the sealing member 12 are disengaged, and the sealing member 12 rotates by its own weight.

In order to avoid contact with the sealing member 12 due to a malfunction or the like, the support plates 21 at the left and right ends of the ceiling shielding member 4 are placed at a maximum of the sealing member 12 more than the ceiling surface 2a of the rack. It is preferable that the installation surface of the ceiling shielding member 4 is raised by forming it higher than the hanging distance.
Moreover, it is good also as a structure which provides the wire etc. which connect the sealing member 12 and the frame member 18, etc., and controls a rotation range so that the sealing member 12 may not rotate more than fixed.

In the present embodiment configured as described above, when the smoke sensor 8 detects smoke, a fire detection signal is transmitted to the fire alarm panel 10. The fire alarm panel 10 that has received the fire detection signal transmits a drive signal as an external signal to the locking member 15, and when the locking release mechanism operates, the locking with the sealing member 12 is released, and the sealing member 12 Is rotated about the rotation shaft 13 by its own weight, and an opening is formed in the ceiling shielding member 4.

Then, after confirming that there are no workers remaining in the server room 1 with a human sensor or the like, a fire-extinguishing gas ejection signal is transmitted from the fire alarm panel 10 to the fire-extinguishing gas ejection nozzle 9 and the fire-extinguishing gas is ejected. . The passage between the server room and the rack row is filled with the fire-extinguishing gas by the fire-extinguishing gas jet.

The operation / stop of the air conditioner 7 also depends on the setting of each system, but it is preferable to maintain the rotation of the air conditioner in order to promote the drawing of the fire extinguishing gas. In addition, as shown in FIG. 8, a suction ventilation fan 23 may be provided on the upper portion of the opening 24 to facilitate suction of fire extinguishing gas into the shielded space 6.

The server operation / stopping depends on the settings of each system, but even if the air conditioner 7 is stopped by keeping the server running, the server's own fan circulates the fire extinguishing gas in the rack. It is preferable to maintain the server operation as much as possible.

It is preferable that the server is stopped after a predetermined time has elapsed since the detection of the fire or after the server periphery has reached a predetermined temperature, and backup processing or the like is performed during this time.

(Embodiment 2)
As shown in FIG. 9, a structure in which one end portion of the sealing member 12 is supported by the rotation shaft 13 can also be adopted. Also in this embodiment, as means for avoiding contact between the operator and the sealing member 12 when the electromagnet 15 is unlocked, the support plates 21 are disposed at both left and right ends of the ceiling shielding member 4, A structure that raises the installation surface is adopted.

The rotation shaft 13 of the present embodiment is preferably a hinge, and the other end of the sealing member 12 is connected to the frame member 18 and a wire so that the rotation range is restricted so that the sealing member 12 does not rotate more than a certain amount. It is good.

(Embodiment 3)
As shown in FIG. 10, the sealing member 12 may be interlocked by being locked by the support pins 34. The support pin 34 is urged in the distal direction by a spring 36 to a support fitting 35 provided on the lower surface of the frame member 18, and supports the sealing member 12 b at the distal end portion. A wire 37 that is interlocked with the sealing member 12 a is fixed to the base end portion of the support pin 34.

As shown in FIG. 11, only the sealing member 12a of the ceiling shielding member 4a located at the end of the shielding space 6 is locked by the electromagnet 15 and the iron piece 31, and the sealing members 12b of the other ceiling shielding members 4 are 12 c is supported by a support pin 34. When the electromagnet 15 stops attracting by an external signal (unlocking mechanism), as shown in FIG. 12, the support pin 34a slides in conjunction with the sealing member 12a rotated by its own weight, and is engaged with the sealing member 12b. The stop is released. Further, the support pin 34b slides in conjunction with the rotation of the sealing member 12b, and the locking with the sealing member 12c is released. As a result, the opening mechanism of the shielding space 6 only needs to control one electromagnet 15, which has the advantage that the control is simplified and the cost can be reduced.

(Embodiment 4)
As shown in FIG. 13, the sealing member 12 can be provided on the passage shielding member 3.

In this embodiment, when the locking of the locking member and the sealing member 12 is released by driving an electromagnet or a solenoid, a structure is employed in which the sealing member 12 is rotated outward by its own weight. In addition, it is preferable to use this embodiment as an auxiliary | assistant when there exists an obstruction in the vicinity of the ceiling shielding member 4, and it is preferable to install according to the installation direction of a fire extinguishing nozzle.

(Embodiment 5)
As shown in FIG. 14, the sealing member 12 can be provided on the passage shielding member 3.

In the present embodiment, a structure is employed in which when the locking member is released by driving an electromagnet or solenoid, the sealing member 12 slides downward by its own weight to form the opening 24.

(Embodiment 6)
As shown in FIG. 15, the sealing member 12 can be provided on the ceiling surface 2 a of the rack 2.

In the present embodiment, an air guide path 22 communicating with the shielding space 6 is formed in the upper part of the rack 2, and is provided on the ceiling surface of the rack when the locking of the locking member is released by driving an electromagnet or solenoid. The sealing member 12 adopts a structure in which an opening is formed in the air guide path 22. According to this embodiment, even if the installation surface of the ceiling shielding member 4 is not raised by the support plate 21, it is possible to eliminate the risk of contacting the worker who is working in the path between the rack rows.

It is preferable to provide a ventilation fan for suction at the top of the opening to promote suction of fire extinguishing gas toward the air guide path 22.

In any of the shielding spaces 6 of the above-described embodiments 1 to 6, a plurality of racks 2 are connected to face each other and a ceiling shielding member 4 is provided to cover the upper part of the passage between the rack rows. As shown, only one side of the rack row may be shielded. That is, the passage shielding member includes a side passage shielding member 3a disposed opposite to one side of the rack row and an end passage shielding member 3b provided at the end of the passage, and the rack row and the side passage shielding member 3a are provided. A space adjacent to the rack row may be used as the shielding space 6 by passing the ceiling shielding member 4 to the top of the rack. The sealing members similar to those in the first to sixth embodiments can be provided not only on the ceiling shielding member 4 and the end passage shielding member 3b but also on the side passage shielding member 3a.

Also, as shown in FIG. 17, the shaft hole 30 that receives the rotation shaft 13 is preferably an ellipse. When the ceiling shielding member 4 is distorted by an external force such as an earthquake, the rotation shaft 13 may be sandwiched between the shaft holes 30 and the sealing member 12 may not rotate. For this reason, if the shaft hole 30 with respect to the rotating shaft 13 is formed sufficiently large and formed in the support frame 16 as an ellipse extending in the front-rear direction, the rotating shaft 13 moves in the front-rear direction even when the ceiling shielding member 4 is distorted. The risk that the shaft hole 30 is sandwiched and the sealing member 12 is prevented from rotating is reduced. It is preferable to ensure a sufficient clearance between the sealing member 12, the frame member 18 and the support frame 16.

Furthermore, as shown in FIG. 18 as a structure corresponding to an external force such as an earthquake, the ceiling shielding member 4 may be provided with a distortion preventing structure in which the upper panel 25a of the fixed panel 25 slides on the lower panel 25b. Since the seismic vibration is absorbed by the distortion prevention structure and the distortion of the ceiling shielding member 4 is reduced, the possibility that the rotation shaft 13 is sandwiched by the shaft hole 30 and the rotation of the sealing member 12 is prevented is reduced. In addition, the rotating shaft 13 shall be formed long enough.

(Embodiment 7)
As shown in FIG. 19, the sealing member 12 can be provided on a ceiling shielding member inclined in one direction.

In the present embodiment, the ceiling shielding member 4 is composed of a fixed panel 25 and a sealing member 12. The support plate 21a on the sealing member 12 side of the ceiling shielding member 4 is higher than the support plate 21b on the fixed panel 25 side, the ceiling shielding member 4 is provided inclined in one direction, and the sealing member 12 is a fixed panel. 25 is configured to be slidable. Further, a projecting member 28 is provided at the end of the sealing member 12 opposite to the sliding direction, and the plurality of projecting members 28 are held by the wire 26 that is a locking member. As shown in FIG. 20A, the wires 26 are provided in series along the rack row, and both ends thereof are held by the wire holding members 27.
When one of the wire holding members 27 is released by an external signal, as shown in FIGS. 19 (b) and 20 (b), the plurality of sealing members 12 simultaneously slide the fixed panel 25 by its own weight to open the opening. 24 is formed. This eliminates the need for a locking member and a locking release mechanism for each ceiling shielding member 4 corresponding to each rack, and has the advantage of simplifying the control and reducing costs.

In the seventh embodiment shown in FIG. 19, the ceiling shielding member 4 is provided so as to be inclined in one direction. However, the ceiling shielding member 4 may be inclined to both rack rows with the center of the ceiling shielding member 4 as a vertex. . In this case, the sealing member 12 is divided at the center, and has a structure that can slide on a fixed panel provided in each rack row.

The wire may be a rod-shaped metal fitting, and a wire holding member 27 may be provided for each end of the ceiling shielding member 4 provided in the rack width unit.

(Embodiment 9)
As shown in FIG. 21, the sealing member 12 provided on the ceiling shielding member 4 can be divided into left and right parts.

In the present embodiment, as shown in FIG. 21A, the pair of sealing members 12 are coupled to the left and right fixed panels 25 by hinges 29, respectively, and rotate in a direction depending on the path between the rack rows. . The opposite end of the sealing member 12 is held by the wire 26 that is a locking member at the center of the ceiling shielding member 4, and both ends thereof are held by the wire holding member 27 as in the sixth embodiment. Yes.
When one of the wire holding members 27 releases the holding of the wire 26 by an external signal, the sealing member 12 rotates and opens in the direction depending on the path between the rack rows by its own weight, as shown in FIG. Part 24 is formed. This eliminates the need for a locking member and a locking release mechanism for each ceiling shielding member 4 corresponding to each rack, and has the advantage of simplifying the control and reducing costs.

The wire may be a rod-shaped metal fitting, and a wire holding member 27 may be provided for each end of the ceiling shielding member 4 provided in the width unit of each rack 2.

The rack row passage shielding structure of the above embodiment is a cold aisle that supplies cold air to the shielding space of the passage between the rack rows, but the same structure is also adopted in a hot aisle that covers the exhaust heat from the rack with the shielding space. be able to.

(Embodiment 10)
Embodiment 10 of the present invention will be described in detail with reference to FIGS.
In the tenth embodiment, the opening mechanism including the sealing member 12 and the panel member 19a is provided at the position of the ceiling shielding member 4 that covers the upper part of the rack row passage.
The sealing member 12 is supported so as to be rotatable around a rotation shaft 13 disposed in the width direction of the rack row passage (the direction in which adjacent rack rows are bridged).
The panel member 19a is adjacent to the sealing member 12 in the depth direction of the sealing member 12 (the direction orthogonal to the rotation shaft 13, the longitudinal direction of the rack row passage, and the direction perpendicular to the width direction of the rack row passage). It is fixed to the frame member of the opening mechanism composed of the frame member 18 and the support frame 16.
Therefore, the dimension in the depth direction of the rotation shaft 13 of the sealing member 12 is shortened by the dimension in the depth direction of the panel member 19a.

As shown in FIGS. 22 and 23, the width dimension of the sealing member 12 and the panel member 19a (the dimension in the width direction of the rack row path) is substantially the same as the width dimension of the rack row path. The width dimension of the rack row passage generally corresponds to the distance between adjacent rack rows. In other words, the rotation shaft 13 is arranged in a direction that bridges adjacent rack rows, and the dimension of the sealing member 12 in the direction parallel to the rotation shaft 13 is substantially the same as the distance between the rack rows. Yes.

The structure of the opening mechanism will be described in detail with reference to FIG. 23 as follows.
Support plates 21 are respectively installed on the upper surfaces of the racks 2 in adjacent rack rows.
The support plate 21 is formed in a hollow shape by bending a plate material.
The frame member of the opening mechanism is configured by joining the frame member 18 and the wide support frame 16, and is joined to the support plate 21 at both ends of the frame member 18.
As a result, the frame member composed of the frame member 18 and the support frame 16 is installed in a shape that spans between adjacent rack rows, so that a shielding space can be formed covering the top of the rack row passages. it can.

Inside the frame member, a sealing member 12 that rotates around the rotation shaft 13 and a panel member 19a are arranged. The panel member 19 a is disposed adjacent to the sealing member 12 in the depth direction of the sealing member 12 (direction orthogonal to the rotation shaft 13). The panel member 19 a does not rotate and is fixed to a frame member made up of the frame member 18 and the support frame 16.
In addition, it is preferable that the panel member 19a is a transparent panel, and it is preferable that the transparent panel is also fitted inside the rectangular outer frame of the sealing member 12. However, the present invention is not limited to this.

The sealing member 12 is provided with a rotation shaft 13 at an eccentric position, and the support frame 16 is provided with a shaft hole 30. The rotating shaft 13 is fitted in the shaft hole 30 so as to support the sealing member 12 rotatably. Further, an iron piece 31 is attached to the sealing member 12, and an electromagnet 15 is installed at a position corresponding to the iron piece 31 on the frame member 18.

With such a structure, the iron piece 31 can be adsorbed by the electromagnet 15 and the sealing member 12 can be held in a closed state. When the control unit 40 receives a fire signal (= external signal) issued from the fire alarm panel 10, the adsorption by the electromagnet 15 is released. Thereby, since the rotating shaft 13 exists in the eccentric position, the sealing member 12 rotates by its own weight, and the upper part of the rack row passage is opened. In addition, about the mechanism which rotates the sealing member 12 and opens and closes, the above-mentioned arbitrary mechanisms are employable.

As described above, adjacent to the sealing member 12 in the depth direction of the sealing member 12 (the direction orthogonal to the rotation shaft 13, the longitudinal direction of the rack row passage, and the direction perpendicular to the width direction of the rack row passage). Since the panel member 19a is installed, the length of the sealing member 12 in the depth direction can be shortened. Therefore, the drooping distance when rotated can be reduced, and thereby the height of the support plate 21 can also be reduced. That is, the height from the floor surface of the shielding space 6 to the ceiling shielding member 4 can be reduced, and even if a cable rack or the like is arranged on the upper portion of the ceiling shielding member 4, it does not become an obstacle. Moreover, even if the ceiling height of the server room 1 is low, it is possible to cope.

Further, as described above, when the width dimension of the sealing member 12 is substantially the same as the width dimension of the rack row passage, the opening 24 can be expanded to the full width direction of the rack row passage. A wide opening area of the opening 24 can be secured. Further, by making the width dimension of the panel member 19a substantially the same as the width dimension of the rack row passage, it is possible to realize a rotating mechanism having the above function with a simple structure. However, the present invention is not limited to this, and the present invention includes a case where the width dimension of the sealing member 12 and the width dimension of the panel member 19a are smaller than the width dimension of the rack row passage.
In the case shown in FIGS. 22 and 23, the rotation shaft 13 is arranged in the width direction of the rack row passage (direction in which adjacent rack rows are bridged), but the present invention is not limited to this. The case where 13 is arranged in the longitudinal direction of the rack row passage is also included in the present invention.

DESCRIPTION OF SYMBOLS 1 Server room 2 Rack 3 Passage shielding member 4 Ceiling shielding member 5 Under floor 6 Shielding space 7 Air conditioner 8 Smoke sensor 9 Fire extinguishing gas ejection nozzle 10 Fire alarm panel 11 Signal line 12 Sealing member 13 Rotating shaft 14 Locking member 15 Electromagnet 16 Support frame 18 Frame member 19 Transparent panel 19a Transparent panel 20 Packing 21 Support plate 22 Air guide passage 23 Ventilation fan 24 Opening portion 25 Fixed panel 26 Wire 27 Wire holding member 28 Projection member 29 Hinge 30 Shaft hole 31 Iron piece 32 Spring member 33 Press Member 34 Support pin 35 Support metal fitting 36 Spring 37 Wire 40 Control part

Claims

A rack row passage shielding structure in which a plurality of racks are connected and arranged as a rack row, and a space adjacent to the rack row is shielded by a ceiling shielding member and a passage shielding member,
The ceiling shielding member, the passage shielding member, or the rack has an opening mechanism that forms an opening for drawing an extinguishing gas from an ejection nozzle provided outside the shielding space in response to an external signal,
The opening mechanism includes a sealing member that seals the opening, a locking member that locks the sealing member, and an unlocking mechanism that releases the locking of the locking member in response to an external signal. Become
The rack row passage shielding structure, wherein the sealing member is driven by its own weight to form an opening when the locking member is released.
2. The sealing member according to claim 1, wherein the sealing member includes a rotation shaft, and when the locking of the locking member is released, the sealing member rotates about the rotation shaft to form an opening. Rack row passage shielding structure.
The rack row passage shielding structure according to claim 2, wherein the rotation shaft is arranged so as to be shifted from the center of gravity of the sealing member.
The opening mechanism is provided at the position of the ceiling shielding member;
The opening mechanism has a panel member adjacent to the sealing member in a depth direction perpendicular to the rotation axis;
The rack row passage shielding structure according to claim 2 or 3, wherein the panel member is fixed to a frame member of the opening mechanism.
The pivot shaft is disposed in a width direction of a rack row passage extending along the rack row;
The dimension in the width direction of the rack row passage of the sealing member is
5. The rack row passage shielding structure according to claim 4, wherein the rack row passage is substantially the same in width as the rack row passage.
The rack row passage according to claim 1, wherein an air guide path communicating with the shielding space is provided in an upper part of the rack, and the opening is formed in the air guide path by a sealing member provided on a ceiling surface of the rack. Shielding structure.
2. The rack row passage shielding structure according to claim 1, wherein an intake fan is installed above the opening.
The rack row passage shielding structure according to claim 1, wherein when the locking member is released, the sealing member slides downward to form an opening.