JP2013026328A - Fluid control board and apparatus housing rack including the same and fluid control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fluid control capable of avoiding reduction in cooling effect due to sneaking of an exhaust heat fluid in early stage.SOLUTION: In a back side current plate 21 attached to an apparatus housing rack 10 installed in a communication machine room M so as to cool a housed communication machine M while the cool air ca flows in from the front side and flows out from the back side, a guide 23 is installed above the back side of the apparatus housing rack and guides the warm air wa, that flows out from the back side outflow surface 11 and rises in accordance with the difference from the ambient temperature, in the laterally upward separating direction.

Description

  The present invention relates to a fluid control plate, a device storage rack including the fluid control plate, and a fluid control method, and more particularly, to a fluid control plate that regulates the flow of fluid for cooling a heating element.

  Conventionally, there are devices that need to be cooled in order to become a heating element. In particular, in recent information processing devices, the amount of heat generation increases as data processing becomes more integrated and denser, and cooling is essential to operate the components mounted on the internal board without causing failures or malfunctions. It has become.

  This type of heat generating device, such as a communication device or a data processing device, has been adjusted to an appropriate temperature in order to be able to execute processing of a huge amount of data with a plurality of units arranged in an orderly manner. A dedicated operation room (space) is prepared and installed.

  In this dedicated room, a plurality of device devices are mounted and supported in a rack (equipment storage rack) having a width and depth equivalent to one unit while being stacked in parallel while ensuring a gap in the vertical direction. The racks are laid out in parallel. When it is necessary to install a plurality of rack rows, the layout is made such that the front faces of the device are facing each other. This type of equipment generates heat during data processing and other operations, and the rise in temperature causes failure and malfunction.Therefore, the air inside the equipment and racks is expelled to the outside and exhaust air is taken in. Heat treatment is necessary, and cooling is effectively performed by using the outside air taken in as cold air (fluid).

  Furthermore, in this dedicated room, cold air is blown out between the opposing rack rows to form a cold air space (cold aisle), so that it flows into the gaps between the individual devices in the rack. In addition, heat is efficiently exchanged while flowing out from the rear side, and cooling is also performed. In this cold aisle system, in order to prevent the warm air heated by the heat generated by the equipment and equipment from immediately flowing from the rear side to the front side and reducing the cooling efficiency, the front side of the rack row (cold air inflow surface) Patent Document 1 proposes that a plate material is provided on the upper side) and a wrap-around restriction wall is provided.

JP 2004-184070 A

  However, in the cooling by the temperature-controlled cold air of such heat generating device equipment, the warm air heated by the device equipment is taken into the air conditioner to cool it and blown out to the cold aisle between the rack rows, In recent years, energy saving tends to be adjusted to the minimum necessary air conditioning.

  For this reason, when the air conditioner can be operated so as to circulate the conditioned air with a sufficient air volume, the restriction wall described in Patent Document 1 functions effectively and collects the warm air before turning around. However, depending on the amount of cool air blown out to the cold aisle and the amount of air drawn into the air conditioner, the warm air exhausted from the rear side of the rack row rises and overflows to the front side in the shortest distance. In some cases, you may have to be in a situation. In such a case, there is a possibility that the cooling effect of the equipment on the upper side of the rack is lowered, and the designed cooling function cannot be achieved.

  Then, this invention aims at providing the fluid control which can avoid the fall of the cooling effect by the early wraparound of a waste heat fluid.

  In a first aspect of the invention of the fluid control plate that solves the above-mentioned problem, a fluid having a temperature lower than the ambient temperature is allowed to flow in, and after flowing in the lateral direction, is cooled by the fluid while being discharged from the opposite side of the inflow. A fluid control plate attached to a structure having a heat generating part to be installed, installed at the upper part of the fluid outflow surface side of the structure, outflowing from the outflow surface, and rising according to a difference from the ambient temperature And a top plate for guiding the fluid in a lateral direction away from the structure.

  According to a second aspect of the invention of the fluid control plate that solves the above problem, in addition to the specific matter of the first aspect, the top plate portion allows the fluid flowing out from the outflow surface to wrap around to the inflow surface side. The flow path is formed so as to constitute at least the upper surface side of the flow path longer than between the upper part of the outflow surface and the upper part of the inflow surface.

  According to a third aspect of the invention of the fluid control plate that solves the above-mentioned problem, in addition to the specific matter of the first or second aspect, the top plate portion is inclined so as to be located at a position farther from the structure. It is installed so that it may become a surface.

  The first aspect of the device storage rack that solves the above-mentioned problems is that the storage device stores one or more devices serving as a heat generating portion, and the temperature is lower than the ambient temperature from one of the front, back, and side surfaces. The fluid is cooled and the device is cooled by the fluid while the fluid is circulated in the lateral direction and then flows out from the other surface opposite to the one surface. The fluid control plate according to any one of 1 to 4 is provided.

  The first aspect of the invention of the fluid control method for solving the above-described problem is that a fluid having a temperature lower than the ambient temperature is caused to flow in and then circulated in the lateral direction, and then discharged from the opposite side of the inflow. A fluid control method for regulating a circulation flow path of the fluid to be exchanged between the fluids, wherein the fluid flowing out from the outflow surface rises according to a difference from the ambient temperature and rotates to the inflow surface side at a shortest distance. It is characterized by guiding the entrainment in the lateral direction away from the heating element after exiting from the outflow surface.

  In such an embodiment, after the heat generating portion is cooled, the fluid that flows out of the structure and rises along the outflow surface is guided in the lateral direction. At this time, the fluid is regulated in such a way that the flow path is longer than the shortest distance between the upper part of the outflow surface and the upper part of the inflow surface by being guided in a lateral direction that is separated in a state where the fluid is restricted from rising. The Therefore, it is possible to limit the immediate sneaking from the upper part of the outflow surface to the inflow surface side, and even if the sneaking to the inflow surface side, the remote position can be bypassed and the temperature can be lowered.

  As described above, according to one aspect of the present invention, the fluid that cools and heats up the heat generating portion is diffused and radiated by bypassing the remote position without immediately flowing from the upper portion of the outflow surface to the inflow surface side. Therefore, it is possible to avoid the high-temperature exhaust heat fluid that has cooled the heat generating portion from flowing around as it is. Therefore, the temperature of the low-temperature fluid that flows around the heat generating portion to be cooled does not rise, and it is possible to effectively cool the heat generating device while achieving energy saving and preventing a decrease in cooling efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the fluid control board which concerns on one Embodiment of this invention, an equipment storage frame provided with the same, and a fluid control method, and is a partially transparent perspective view which shows the whole structure. It is a side view which shows one of the apparatus storage racks concerning this embodiment. It is a figure which shows the fluid control board, (a) is a perspective view of the fluid control board which concerns on this embodiment attached to the back side of an apparatus storage rack, (b) is the fluid control board attached to the front side of an apparatus storage rack It is a perspective view. It is a side view explaining the installation in the cold aisle system. It is a figure explaining the flow of the cooling fluid, (a) is a conceptual side view which shows the time of the installation of this embodiment, (b) is a conceptual side view which shows the time of the non-installation of this embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1-5 is a figure which shows the fluid control board which concerns on one Embodiment of this invention, an apparatus storage frame provided with the same, and a fluid control method.

  1 to 3, the device storage rack (device storage rack) 10 is installed in a plurality of rows in the communication machine room R, and is attached and supported in a state of storing a plurality of communication devices M, respectively. It is made so that it can be made.

  This device storage rack 10 has the width and depth of one communication device M, and after the left and right side portions of the communication device M are stored while being guided by rails (not shown), the front Mf side Is attached and supported by screws. In this state, the device storage rack 10 is designed so that the communication device M can be mounted and supported in a form in which the communication device M is laid down and stacked in the vertical direction while forming and securing a gap S therebetween. In addition, this equipment storage rack 10 may be provided with the shelf board supported in the state which mounts each communication apparatus M instead of a rail.

  Here, since the integrated circuit mounted on the internal substrate generates heat during execution of enormous data processing, the communication device M needs to be cooled so as not to break down or malfunction, and is not shown so as to circulate internal and external air. A fan is installed. In other words, the device storage rack 10 constitutes a structure that stores the communication device M serving as a heat generating portion.

  In the communication machine room R, a device storage rack 10 that stores and supports a plurality of communication devices M is installed in a two-row parallel state in which the front Mf side of the communication device M faces each other without any gaps. The device M is arranged (laid out) so that the front Mf side is on the front side with respect to an administrator or the like who sets the passage P between the two rows of device storage racks 10. In this communication machine room R, an air conditioner AC is installed at the end of the passage P to adjust the room to a constant temperature, and the air conditioner AC sucks air (fluid) on the ceiling side from the upper suction port ACi. After cooling, the air is blown into the free access area D under the double floor formed in the lower part of the floor surface F, and blown out from a plurality of outlets formed in the passage P to circulate.

  That is, the communication machine room R blows cold air (fluid air) ca from the air conditioner AC to the passage P between the 10 rows of equipment storage racks to form a cold aisle (cold air space), and the cold air ca is supplied to the equipment storage rack. The communication device M in the air is circulated (circulated) between the communication devices M to exchange heat by circulating the air inside and outside, and the warm air (exhaust heat) wa after the heat exchange escapes to the back surface Mb of the communication device M and is The cold aisle system that can effectively cool the communication device M is adopted by raising to the ceiling side due to the temperature difference and creating a flow toward the air inlet ACi of the air conditioner AC.

  And as above-mentioned, while the apparatus storage rack 10 makes the front Mf side of the communication apparatus M into the inflow side of the cold air ca, the back surface Mb side is made into the outflow side of the warm air wa, The back side outflow surface 11 side At the upper part, a rear side rectifying plate (fluid control plate) 21 is installed so as to be continuous without any gap, and at the upper part on the front side inflow surface 12 side, a front side rectifying plate 31 is installed so as to be continuous without any gap. ing.

  As shown in FIG. 4A, the back-side rectifying plate 21 has a fixing portion 22 formed in a shape that matches the frame shape of the upper part on the back-side outflow surface 11 side of the equipment storage rack 10, and the fixing portion 22. And a guide portion (top plate portion) 23 formed so as to become an inclined surface (ceiling surface) located on the upper side as a location continuously spaced from the The screw holes 22a drilled on both ends are screwed to the upper part on the rear side outflow surface 11 side of the equipment storage rack 10. The back side rectifying plate 21 is formed in a frame shape as a frame member having an L-shaped cross section along with the fixed portion 22 and the guide portion 23, and is made of, for example, a hard resin material. In addition, the back-side rectifying plate 21 is formed in a plate shape with a distal end side portion 23 a that is the farthest from the fixing portion 22 of the guide portion 23, and a transparent sheet member 24 is provided inside the frame shape of the guide portion 23. Is attached to form an inclined ceiling surface while ensuring light weight and light removal.

  Thereby, as shown to Fig.5 (a), the warm air wa which flows out from the back side outflow surface 11 (back surface Mb of the communication apparatus M) side of the apparatus storage rack 10 rose right above by the temperature difference with the circumference | surroundings. Later, it is guided by the inclined surface of the guide portion 23 of the back-side rectifying plate 21 and can be regulated so as to be directed toward the obliquely upward lateral ceiling side that is separated from the passage P (cold aisle). That is, the guide portion 23 of the back side rectifying plate 21 constitutes the upper surface side of the flow path that guides the warm air wa.

  Therefore, the back side rectifying plate 21 executes the fluid control method, and the warm air wa flowing out from the back side outflow surface 11 side of the equipment storage rack 10 passes through the top surface side of the equipment storage rack 10 at the shortest distance. It is possible to restrict the arrival at the P side (see FIG. 5B), and by detouring (guiding) diagonally upward and laterally away from the back side outflow surface 11, it is diffused to the surroundings. However, it is possible to allow the temperature to drop toward the cold aisle in the passage P after the temperature is lowered by heat exchange.

  Note that the back-side rectifying plate 21 may be installed in a posture that is inclined upward at an appropriate elevation angle so as to guide the warm air wa upward without being retained. The elevation angle may be set to about 30 to 60 degrees, preferably 30 to 45 degrees, and in this embodiment, 45 degrees. In addition, the length of the back side rectifying plate 21 may be appropriately designed in consideration of the distance from the ceiling side.

  As shown in FIG. 4B, the front-side rectifying plate 31 is formed in a shape that matches the frame shape of the upper part on the front-side inflow surface 12 side of the equipment storage rack 10, as with the rear-side rectifying plate 21. The fixing portion 32 and the limiting portion 33 formed so as to be a ceiling surface that is continuous from the fixing portion 32 in the horizontal direction are integrally formed, and screw holes 32a on both ends of the fixing portion 32 are produced. Is used to screw the device storage rack 10 to the upper part on the front side inflow surface 12 side. The front-side rectifying plate 31 is formed in a frame shape as a frame member having an L-shaped cross section along with the fixed portion 32 and the peripheral portion of the restricting portion 33, and is made of, for example, a hard resin material. Further, the front side rectifying plate 31 is formed in a plate shape with a distal end side portion 33 a farthest from the fixing portion 32 of the limiting portion 33, and a transparent sheet member 34 is formed inside the frame shape of the limiting portion 33. The ceiling surface is constructed while affixing a light weight and ensuring lightening.

  As a result, as shown in FIG. 5A, even if there is a warm air wa that circulates to the front-side inflow surface 12 (the front surface Mf of the communication device M) of the equipment storage rack 10, the warm air wa remains as it is on the front surface. Intrusion into the upper side of the side inflow surface 12 (see FIG. 5B) is restricted by the restriction portion 33 of the front side rectifying plate 31.

  Therefore, the front-side rectifying plate 31 can draw in the warm air wa on the upper side of the equipment storage rack 10 as much as possible into the suction port ACi of the air conditioner AC of the communication machine room R, and blow out into the passage P as the cold air ca. It can distribute | circulate between the communication apparatuses M from the front side inflow surface 12, and can be cooled effectively.

  Note that the front-side rectifying plate 31 may be installed so that the warm air wa can be restricted so as not to go around to the front-side inflow surface 12 of the equipment storage rack 10. In this embodiment, the front-side rectifying plate 31 extends in the horizontal direction. However, the present invention is not limited to this and may be extended upward. However, since the front-side rectifying plate 31 can be separated as much as possible by restricting direct wraparound of the warm air wa to the front-side inflow surface 12 side of the equipment storage rack 10, as in the present embodiment, the front-side rectifying plate 31 can be arranged horizontally. It is preferable to extend as much as possible. Further, the length of the front-side rectifying plate 31 may be appropriately designed in consideration of the distance between other members on the opposite side and the like, and may be configured to be continuously closed on the opposite side. .

  In the present embodiment, the rectifying plates 21 and 31 are described as an example of fixing to the upper part on the front side or the rear side of the equipment storage rack 10, but the present invention is not limited to this. For example, the equipment storage rack 10 may be fixed to the upper surface side of the ceiling surface, and may be fixed not only with screws but also with a double-sided tape or the like. In addition, the current plates 21 and 31 are not limited to resin, and a light metal material may be used. However, considering light weight and flame retardancy, it is preferable to select a resin material such as polycarbonate.

  As described above, in the present embodiment, even in an environment where it is necessary to save energy by reducing the air volume of the air conditioner AC of the communication machine room R to the minimum, the warm air discharged from the rear-side outflow surface 11 of the equipment storage rack 10. Wa can be separated in the lateral direction and can be passed through an extended flow path toward the ceiling side, and can be sufficiently cooled. For this reason, it can be avoided that the temperature of the cold aisle ca of the cold aisle that flows into the communication device M as it flows around the passage P as it is and thus impairs the cooling effect. Accordingly, it is possible to suppress a decrease in cooling efficiency even in a low air flow operating environment of the air conditioner AC in which it is not possible to reliably avoid the warm air wa from entering the cold aisle (passage P) side, and effectively cool the communication device M. And can be operated efficiently.

  Here, in this embodiment, the front-side rectifying plate 31 is installed in addition to the rear-side rectifying plate 21, but the temperature of the warm air wa can be sufficiently reduced only by the rear-side rectifying plate 21, and cold aisle. In the case where there is little influence on the cold air ca, only the back side current plate 21 may be provided. Moreover, what is necessary is just to install so that the back side outflow surface 11 may be confronted when the apparatus storage rack 10 is made to parallel in 3 or more rows.

  The scope of the present invention is not limited to the illustrated and described exemplary embodiments, but includes all embodiments that provide the same effects as those intended by the present invention. Further, the scope of the invention is not limited to the combinations of features of the invention defined by the claims, but may be defined by any desired combination of particular features among all the disclosed features. .

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

DESCRIPTION OF SYMBOLS 10 Equipment storage rack 11 Back side outflow surface 12 Front side inflow surface 21 Back side rectifying plates 22, 32 Fixing part 23 Guide part 24 Sheet member 31 Front side rectifying plate 33 Restriction part 34 Sheet member AC Air conditioner ACi Suction port ca Cold air D Free access area F Floor M Communication equipment P Passage R Communication machine room S Clearance wa Warm air

Claims (5)

A fluid control plate attached to a structure including a heat generating part that is cooled by the fluid while flowing a fluid having a temperature lower than the ambient temperature and flowing it in the lateral direction and then flowing out from the opposite side of the fluid,
A ceiling installed in the upper part of the fluid outflow surface of the structure to guide the fluid flowing out from the outflow surface and rising in accordance with a difference from the ambient temperature in a lateral direction away from the structure. A fluid control plate having a plate portion.   The top plate portion constitutes at least the upper surface side of the flow path longer than the gap between the upper portion of the outflow surface and the upper portion of the inflow surface where the fluid flowing out from the outflow surface is about to enter the inflow surface side. The fluid control plate according to claim 1, wherein the fluid control plate is formed as described above.   The fluid control plate according to claim 1, wherein the top plate portion is installed so as to be an inclined surface located on an upper side as a position away from the structure. One or two or more devices that serve as heat generation parts are stored, and after flowing a fluid having a temperature lower than the ambient temperature from any one of the front, back, and side surfaces and flowing in the lateral direction, the opposite of the one surface A frame configured to cool the device with the fluid while flowing out from the other side of the side,
An equipment storage rack comprising the fluid control plate according to any one of claims 1 to 4. A fluid control method for regulating a circulation flow path of a fluid to be exchanged with a heating element while a fluid having a temperature lower than the ambient temperature is introduced and circulated in a lateral direction and then discharged from the opposite side of the inflow Because
The fluid flowing out from the outflow surface rises in accordance with the difference from the ambient temperature and attempts to go around the inflow surface at the shortest distance from the heat outflow surface after leaving the outflow surface. The fluid control method characterized by guiding to.

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