JP6525907B2 - Computer room air conditioning system - Google Patents

Description

  The present invention relates to a computer room air conditioning system for a computer room in which a plurality of storage racks for storing various devices such as a computer are arranged.

  In the computer room, devices such as a computer, an information device, and a communication device are accommodated in a plurality of accommodation racks and arranged in a highly integrated manner. The equipment housed in each housing rack emits heat during use, but its operating temperature needs to be kept low to obtain stable operation of the equipment.

For example, in a computer room where a plurality of devices are installed in a storage rack, cooling air of an air conditioner is blown out to a passage on the front side of the storage rack.
In the computer room air conditioning system adopted here, an intake surface for taking in cooling air is provided on the front side of each accommodation rack that accommodates equipment, and heat is taken on the back side or upper surface side of each accommodation rack An exhaust surface is provided for exhausting the hot air to the outside. In the computer room, a plurality of storage racks are arranged such that the intake surfaces face each other across the passage, and the cooling air blown out from the air conditioner is supplied to each storage rack through the passage between the racks . And the air (warm air) which cooled and heated the apparatus in each accommodation rack is returned again to the suction port of an air conditioning apparatus.

  In this type of computer room air conditioning system, the space between the storage racks on both sides of the passage is the upper part of the passage in order to efficiently cool the equipment in the storage rack without causing the warm air to the intake side. And an end shield covering the end of the passage. In each storage rack, a heat radiation fan is installed on the back side or the top side in order to cool the device and release the heated warm air to the outside.

  Moreover, in this type of computer room air conditioning system, the cold air supply capacity of the air conditioner is an exhaust by the exhaust heat fan of the storage rack in order to prevent the heat on the exhaust heat side from entering the passage on the cooling side through the gaps between the parts. It is set slightly higher than the ability. However, if the air flow from the air conditioner supplied to the aisle may greatly exceed the exhaust air flow of the heat dissipation fan on the storage rack side due to some reason, the pressure difference between the inside and the outside of the aisle increases. There is a concern that a large load may act on the shield covering the periphery of the passage and the exhaust fan.

  Therefore, as a computer room air conditioning system that can cope with this, the upper shield covering the upper part of the passage on the cold air introduction side between the storage racks, the opening communicating the inside and outside of the passage, and the pressure difference between the inside and outside of the passage According to the invention, it is devised that a pressure reducing damper is provided to open and close the opening. In this computer room air conditioning system, when the pressure in the passage on the cold air introduction side between the storage racks is significantly higher than the pressure on the exhaust side of the storage rack, the pressure reducing damper opens the opening, whereby the cold air introduction side The pressure in the passage is reduced (see, for example, Patent Document 1).

  In addition, as a technology of the structure used in the computer room air conditioning system, a shielding member that shields between fixed structures such as a storage rack is a cantilever support structure, and when an earthquake occurs, between the shielding member and the fixed structure. Is known to prevent the occurrence of a large stress on the shield member and the fixing structure to cause damage (see, for example, Patent Document 2).

JP, 2014-197244, A JP, 2011-257075, A

  By the way, also in the above-mentioned computer room air conditioning system provided with an opening and a pressure relief damper in the upper shield, it is considered to support the upper shield on a fixed structure by cantilever support. In this case, the upper shield is a fixed end connected to the fixing structure at one end side in the extending direction, and a free end not fixed to the fixing structure at the other end side in the extending direction. For this reason, when the opening and the pressure reducing damper are installed in the upper shielding body, there is a concern that the pressure reducing damper may rattle with the swing of the free end of the upper shielding body, and noise may easily occur.

  Therefore, the present invention is intended to provide a computer room air conditioning system capable of preventing damage to the upper shield at the occurrence of an earthquake and suppressing rattling of the pressure damper during normal use.

The computer room air conditioning system according to the present invention adopts the following configuration in order to solve the above problems.
A passage formed between a plurality of storage racks having equipment inside and having an intake surface for taking in cooling air and an exhaust surface for discharging heated thermal air, and the storage racks arranged in a plurality of rows And an air conditioner for sucking in the warm air and delivering the cooling air, and covering the upper part of the passage facing the intake or exhaust surface of the storage rack to separate the circulation portion of the cooling air and the circulation portion of the warm air. An upper shielding member, wherein the upper shielding member is a fixed end whose one end side in the extending direction is a fixed end connected to the fixing structure and a free end whose other end side in the extending direction is not connected to the fixing structure An opening communicating the inside and the outside of the passage and a pressure difference between the inside and the outside of the passage, the opening is opened according to the pressure difference between the inside and the outside of the passage. With a pressure damper to reduce the pressure difference between It was as to be provided.

  According to the above configuration, when an earthquake occurs, the other end side in the extending direction of the upper shield shakes in response to the vibration of the earthquake, thereby suppressing generation of a large stress on the other end side of the upper shield. Also, when the pressure difference between the inside and the outside of the passage increases during normal use, the pressure reducing damper opens the opening near the one end side in the extension direction of the upper shield, and the pressure in the passage escapes to the outside through the opening. . At this time, since the pressure reducing damper is provided closer to one end side in the extending direction of the upper shielding member which is the fixed end, rattling is less likely to occur between the pressure absorbing damper and the opening.

The upper shielding member is displaced by the displacement of the free end when the pressure difference between the inside and the outside of the passage becomes equal to or larger than a threshold pressure difference larger than the pressure difference at which the pressure reducing damper opens the opening. The inside and the outside of the passage may be communicated.
In this case, when the pressure difference between the inside and the outside of the passage is relatively small, the pressure reducing damper opens the opening near one end side in the extending direction of the upper shield to release the pressure in the passage to the outside. When the pressure difference inside and outside the passage is equal to or greater than the threshold pressure difference larger than the pressure difference at which the pressure damper opens the opening, the pressure damper opens the opening and the other direction of extension of the upper shield The end side is displaced upward to create a gap between it and the fixed structure. At this time, the pressure in the passage is released to the outside through the opening and is also released to the outside through the gap between the upper shield and the fixing structure. Therefore, the pressure in the passage is discharged to the outside with an opening area corresponding to the pressure difference between the inside and the outside of the passage.

  According to the present invention, when an earthquake occurs, the upper shield is shaken at the free end side, so damage to the upper shield due to stress concentration can be prevented. Since it is arrange | positioned near the one end side of the extension direction of the upper shielding body which is these, it is possible to prevent rattling of the pressure reducing damper.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the outline | summary of the computer room air conditioning system of 1st Embodiment of this invention. It is a typical sectional view showing an outline of a computer room air conditioning system of a 1st embodiment of this invention. It is sectional drawing to which a part of FIG. 2 of the computer room air conditioning system of 1st Embodiment of this invention was expanded. It is a typical sectional view showing an outline of a computer room air conditioning system of a 2nd embodiment of this invention. It is a typical sectional view showing an outline of a computer room air conditioning system of a 3rd embodiment of this invention. It is a typical sectional view showing an outline of a computer room air conditioning system of a 4th embodiment of this invention. It is a schematic cross section which shows the outline | summary of the computer room air conditioning system of the 5th Embodiment of this invention. It is a typical sectional view of a part of computer room air conditioning system of a 6th embodiment of this invention. It is a typical sectional view of a part of computer room air conditioning system of a 6th embodiment of this invention. It is a perspective view of a part of computer room air conditioning system of a 7th embodiment of this invention. It is sectional drawing of a part of computer room air conditioning system of 7th Embodiment of this invention. It is sectional drawing of a part of computer room air conditioning system of 7th Embodiment of this invention. It is sectional drawing of a part of computer room air conditioning system of 8th Embodiment of this invention. It is a typical top view which shows the modification of the computer room air conditioning system of embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described based on the drawings.
FIG. 1 is a view showing the entire configuration of a computer room air conditioning system 100 according to this embodiment, and FIG. 2 is a view showing a schematic cross section of the computer room air conditioning system 100.
As shown in FIG. 1 and FIG. 2, the computer room air conditioning system 100 is used, for example, in a computer room 101 formed in a substantially box shape. The computer room 101 is surrounded by a floor 1, a wall (not shown) and a ceiling. A double floor 2 is provided at a distance above the floor 1, and a plurality of storage racks 3 are installed, for example, in two rows facing each other on the double floor 2. On the double floor 2 is formed a passage 4 sandwiched by these two rows of storage racks 3. An internal space 5 is provided under the double floor 2, and the electrical wiring of each accommodation rack 3 and the electrical wiring of the air conditioner 6 described later are accommodated in the internal space 5.

Further, on the passage 4 extending in the longitudinal direction of the double floor 2, a large number of blowout holes 8 are formed. The interior space 5 under the floor and the passage 4 are in ventilative communication via the plurality of blowout holes 8.
An air conditioner 6 is installed on the double floor 2 outside the passage 4. In the air conditioning apparatus 6, the heated air exhausted from the storage rack 3 is sucked from the suction port 6a and cooled, and the air cooled in the air conditioning apparatus 6 (cooling air) is taken from the blowout port 6b on the bottom surface Send to

  The cooling air supplied from the air conditioner 6 to the internal space 5 is supplied onto the passage 4 through the blowout holes 8. Each accommodation rack 3 is formed in a box shape, and an apparatus 7 such as a computer or communication device is accommodated inside. The housing 3a of each accommodation rack 3 is provided with an intake surface 3b on the front side, and an exhaust surface 3d on the top side. An exhaust fan 3c is provided on the exhaust surface 3d. In each of the storage racks 3, cooling air is sucked from the side of the passage 4, and the equipment 7 is cooled by the cooling air. The air that has cooled the device 7 becomes warm air and is discharged from the exhaust fan 3c to the outside.

  In the computer room air conditioning system 100, an upper shield 10 is provided between the upper surfaces of the storage racks 3 arranged opposite to each other across the passage 4. The upper shield 10 separates the flow portion of the cooling air in the passage 4 from the flow portion of the thermal air above the storage rack 3. Further, a pair of end shields 11 connecting the side ends of the storage racks 3 on both sides facing each other across the passage 4 is attached to the ends on both sides in the extension direction of the passage 4. These end shields 11 separate the flow portion of the cooling air in the passage 4 from the flow portion of the thermal space outside the end racks 3. In this embodiment, the passage 4 is a closed space S surrounded by the storage racks 3 on both sides, the upper shield 10 and the pair of end shields 11 on the double floor 2.

FIG. 3: is the figure which expanded and showed the installation part of the upper shielding body 10. As shown in FIG.
The upper shield 10 has a vertical wall 10a fastened and fixed to the upper surface of one of the storage racks 3 disposed opposite to each other across the channel 4, and the other storage rack across the upper side of the channel 4 from the upper end of the vertical wall 10a. And an upper shielding wall 10b extending substantially horizontally toward the upper side of the upper cover 3. On the upper surface of the other storage rack 3, a support member 12 is fixedly installed to support the lower surface of the extension end of the upper shielding wall 10 b of the upper shielding body 10. Therefore, the upper shield 10 is fastened and fixed to the upper surface of one of the storage racks 3 sandwiching the passage 4 in a cantilever support state. The upper shielding body 10 is substantially sealed between the other accommodation rack 3 by the lower surface of the extended end of the upper shielding wall 10b abutting on the upper surface of the support member 12 during normal use. The vertical wall 10a and the upper shielding wall 10b may have a hinge structure that can rotate as long as they are connected to each other.

  As described above, the upper shielding body 10 is supported in a cantilever state at one upper end of the upper shielding wall 10b in the upper portion of one of the storage racks 3 sandwiching the passage 4 and the other end side in the extending direction is a free end. ing. For this reason, when an earthquake occurs, the other end side of the upper shielding wall 10b can be freely touched, whereby generation of a large stress on the upper shielding wall 10b can be suppressed.

  Further, a substantially rectangular opening 13 communicating the inside and the outside of the passage 4 is formed at a position closer to the upstanding wall 10 a of the upper shielding wall 10 b. A substantially rectangular lid 15 is attached to the opening 13 via a hinge 14 so as to be openable and closable. In this embodiment, the lid 15 and the hinge portion 14 constitute a pressure reducing damper 16 that opens the opening 13 according to the pressure difference between the inside and the outside of the passage 4. The lid 15 opens and closes the opening 13 by the balance between the rising force due to the pressure difference between the inside and the outside of the passage 4 acting on the upper and lower surfaces and the weight of the lid 15. The lid 15 closes the opening 13 while the pressure difference inside and outside the passage 4 does not reach the first threshold pressure difference, and the pressure difference inside and outside the passage 4 becomes equal to or more than the first threshold pressure difference At the moment, the opening 13 is opened.

  The hinge portion 14 is attached to the side of the opening 13 on the vertical wall 10 a side. A stopper member 17 for supporting the lower surface of the lid 15 closing the opening 13 is attached to the lower edge of the side of the opening 13 on the side away from the vertical wall 10a. Further, an opening regulating member 18 for regulating the opening displacement of the lid 15 is attached to the upper edge of the side of the opening 13 on the side away from the vertical wall 10 a.

  The upper shield 10 in this embodiment is configured by arranging a plurality of pieces each having a vertical wall 10 a and an upper shield wall 10 b in the longitudinal direction of the passage 4. The opening 13 and the pressure reducing damper 16 are provided in any one of the plurality of pieces.

  In the computer room air conditioning system 100 according to this embodiment, when the pressure difference between the inside and the outside of the passage 4 reaches the second threshold pressure difference larger than the first threshold pressure, the upper shielding wall 10b is supported. The end 10b-e (end on the free end) of the member 12 is pushed upward by the pressure difference between the inside and the outside, so that a gap d is created between the upper shielding wall 10b and the support member 12.

In the computer room air conditioning system 100 according to this embodiment, when the pressure difference between the inside and the outside of the passage 4 across the upper shield 10 does not reach the first threshold pressure difference, the lid 15 of the pressure absorbing damper 16 is by its own weight. The opening 13 of the upper shield 10 is closed.
From this state, the difference between the volume of the cooling air flowing into the passage 4 and the volume of the air discharged from the storage rack 3 becomes large due to any cause, and the difference between the pressure inside and outside the passage 4 across the upper shield 10 When the pressure difference becomes equal to or more than the first threshold pressure difference, the lid 15 of the pressure reducing damper 16 is lifted upward around the hinge portion 14. Thereby, the opening 13 is opened, and a part of the cooling air in the passage 4 is released to the outside through the opening 13. As a result, the pressure in the passage 4 is reduced.

  Further, the difference between the flow rate of the cooling air flowing into the passage 4 and the flow rate of the discharge air from the storage rack 3 is further increased, and the pressure difference between the inside and outside of the passage 4 across the upper shield 10 is the second threshold pressure difference. If it becomes above, in the state where opening 13 was opened by pressure protection damper 16, edge 10b-e by the side of support member 12 of upper shielding wall 10b will be pushed up, and gap d will be made. As a result, the pressure in the passage 4 escapes to the outside through the gap, and the pressure in the passage 4 is reduced.

As described above, in the computer room air conditioning system 100 according to this embodiment, one end side of the upper shield 10 is a fixed end connected to the fixed structure (one accommodation rack 3), and the other end side is a fixed structure It is a free end not connected to an object (the other storage rack 3). For this reason, when an earthquake occurs, the upper shield 10 swings on the free end side, so that damage to the upper shield 10 due to stress concentration can be prevented.
Furthermore, in the computer room air conditioning system 100 according to this embodiment, since the opening 13 and the pressure reducing damper 16 are disposed closer to one end side in the extending direction of the upper shielding body 10 which is the fixed end, the upper shielding Even though the structure in which the body 10 is cantilevered and connected to the fixed structure is adopted, rattling of the pressure suppression damper 16 can be prevented.

  In the computer room air conditioning system 100 according to this embodiment, when the pressure difference between the inside and the outside of the passage 4 becomes larger than the second threshold pressure difference, the free end side of the upper shielding wall 10b of the upper shielding body 10 It is configured to be displaced upward to form a gap d with the support member 12. Therefore, the pressure in the passage 4 can be released to the outside by the opening area according to the pressure difference between the inside and the outside of the passage 4 while having a simple structure which is easy to manufacture.

  By the way, in the embodiment mentioned above, although the upper shielding body 10 connected with the upper part of the accommodation rack 3 of one side which sandwiches the passage 4 extends above the accommodation rack 3 of the other side, it does not restrict to this structure Embodiments as shown in FIGS. 4 to 6 can also be adopted.

  In the second embodiment shown in FIG. 4, the upper shield 10 is individually attached to the one side storage rack 3 and the other side storage rack 3 sandwiching the passage 4. The upper shielding wall 10b of each of the left and right upper shielding members 10 extends near the approximate center of the passage 4 and extends to the supporting member 12 fixed to the fixed structure (not shown) in the passage 4 (edge 10b- The lower surface of e) is supported.

  In the third embodiment shown in FIG. 5, the passage 4 is formed between the storage rack 3 and the wall 30, and the upper shield 10 is attached to the top of the storage rack 3. The upper shielding wall 10b of the upper shielding body 10 extends to the vicinity of the wall 30, and is supported by the lower surface of the extending end (edges 10b-e) by the support member 12 fixed to the wall 30 which is a fixed structure. It has become.

  In the fourth embodiment shown in FIG. 6, the passage 4 is formed between the storage rack 3 and the wall 30 as in the third embodiment, but the upper shield 10 is attached to the wall 30 side. . The upper shielding wall 10b of the upper shielding body 10 extends to the upper side of the storage rack 3 and supports the lower surface of the extended end (edges 10b-e) on the support member 12 fixed to the storage rack 3 which is a fixed structure. It is supposed to be

  In the second to fourth embodiments shown in FIGS. 4 to 6, the same parts as those in the first embodiment are denoted by the same reference numerals. Also in the case of the second to fourth embodiments described here, the same effect as that of the first embodiment can be obtained.

  In the computer room 101 of the above embodiment, although the upper part of the passage 4 into which the cooling air is introduced is covered by the upper shield 10, the upper part of the passage through which the warm air is discharged from the storage rack 3 is The same upper shield 10 may be covered.

FIG. 7 is a view showing the computer room air conditioning system 200 of the fifth embodiment in which the upper part of the passage 204 through which the warm air is discharged from the storage rack 3 is covered by the upper shield 10. In FIG. 7, the same parts as those of the embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals.
In the computer room 201, a passage 204 is formed between the storage racks 3 arranged in a plurality of rows, in which the heated air is discharged from each storage rack 3. The upper shield 10 similar to that in the above embodiment is a passage 204 Covering the top. In the double floor 2 below the passage 204, a discharge hole 208 communicating with the internal space 5 connected to the suction port 6a of the air conditioner 6 is formed. One end side of the upper shielding body 10 in the extending direction is connected to the upper portion of one accommodation rack 3, and the other end side in the extending direction is not connected to the other accommodation rack 3 and is a free end. An opening 13 and a pressure reducing damper 16 are provided at a position near the fixed end of the upper shielding wall 10 b of the upper shielding body 10.

Further, in each of the above embodiments, the opening displacement of the lid 15 of the pressure reducing damper 16 is restricted by the opening restricting member 18 as in the sixth embodiment shown in FIGS. 8 and 9. Alternatively, an opening regulating member 318 capable of adjusting the regulating height may be employed to adjust the regulating height of the lid 15 in accordance with the flapping state of the lid 15. The opening restricting member 318 shown in FIGS. 8 and 9 is configured to be able to raise and lower the height of a support wall 318b that supports the control wall 318a. FIG. 8 shows a state in which the restriction height by the restriction wall 318a is set low, and FIG. 9 shows a state in which the restriction height by the restriction wall 318a is set high.
In the case of this embodiment, the flapping of the lid 15 can be suppressed by appropriately adjusting the opening displacement of the lid 15 by the opening regulating member 318.

As a structure of the open regulation member which can adjust regulation height to lid 15, a thing as shown in Drawings 10-12 is also employable.
The opening regulating member 418 of the seventh embodiment shown in FIGS. 10 to 12 is a substantially U-shaped member straddling the upper side of the opening 13 at a predetermined height, and the opening regulating member 418 is an upper shield. Position adjustment is possible along the extension direction of 10. In the case of this embodiment, as shown in FIG. 11, by adjusting the position of the opening regulating member 418 in the direction away from the hinge portion 14, the opening displacement of the lid 15 is reduced, and as shown in FIG. By adjusting the position of the regulating member 418 in the direction approaching the hinge portion 14, the opening displacement of the lid 15 can be increased. Also in the case of this embodiment, as in the sixth embodiment, the flapping of the lid 15 can be suppressed by appropriately adjusting the opening displacement of the lid 15 by the opening regulating member 418.

Moreover, as embodiment which can suppress the fluttering noise of the lid 15 effectively, what is shown in FIG. 13 is employable.
In the eighth embodiment shown in FIG. 13, a sound absorbing member 40 such as urethane is attached to the upper surface of a stopper member 17 that supports the lower surface of the lid 15 that closes the opening 13. In the case of this embodiment, when the lid 15 is closed, the lid 15 abuts on the muffling member 40 so that the generation of the fluttering noise can be suppressed.

  In each of the above embodiments, only one set of the opening 13 communicating the inside and the outside of the passage 4 and the pressure absorbing damper 16 is provided at a position near the vertical wall 10 a of the upper shielding wall 10 b. A plurality of sets of the portion 13 and the pressure reducing damper 16 may be arranged in parallel at a position closer to the vertical wall 10 a of the upper shielding wall 10 b.

  The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention. For example, in the above embodiment, the cooling air blown out from the air conditioner 6 is introduced into the passage 4 through the internal space 5 below the double floor 2, as shown in FIG. The air conditioner 6 may be disposed adjacent to any of the storage racks 3 so that the outlet 6 b directly faces the passage 4. In FIG. 14, the same parts as those of the embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals.

3 ... accommodation rack 6 ... air conditioning device 10 ... top shield 13 ... opening 16 ... evacuation pressure damper 100 ... computer room air conditioning system

Claims (2)

A plurality of storage racks each having an apparatus inside and a suction surface for taking in cooling air and an exhaust surface for discharging heated thermal air;
An air conditioner that sucks in warm air and sends out cooling air;
And an upper shield that covers an upper portion of the passage facing the intake or exhaust surface of the storage rack and that separates a circulation portion of the cooling air and a circulation portion of the thermal air.
The upper shield is a fixed end connected to the fixed structure at one end side in the extending direction, and a free end not connected to the fixed structure at the other end side in the extending direction.
An opening communicating the inside and the outside of the passage and a pressure difference between the inside and the outside of the passage are opened near the one end side in the extending direction of the upper shielding body, and the opening is opened according to the pressure difference between the inside and the outside of the passage A computer room air conditioning system characterized in that a pressure reducing damper for reducing a difference is provided.   The upper shielding member is displaced by the displacement of the free end when the pressure difference between the inside and the outside of the passage becomes equal to or larger than a threshold pressure difference larger than the pressure difference at which the pressure reducing damper opens the opening. The computer room air conditioning system according to claim 1, wherein the inside and the outside of the passage are communicated.

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