JP5136851B2 - Rack cooling device for electronic equipment - Google Patents

Description

  The present invention mixes cold air with the exhaust heat exhausted from the electronic equipment housed in the rack, thereby suppressing the temperature rise in the room due to the exhaust heat exhausted outside the rack, and reducing the electronic equipment in the rack. The present invention relates to a rack cooling apparatus for electronic equipment that cools uniformly.

  Means for cooling the electronic devices in the rack using cold air from the underfloor chamber and further cooling the exhaust heat exhausted from the rack into the room is described in an air conditioning system such as a communication / information equipment room in Patent Document 1. ing. According to this system, a local cooling device that directly cools the exhaust heat exhausted into the room is provided in the room.

  On the other hand, as means for efficiently cooling the electronic devices in the rack, for example, a cooling means described in Patent Document 2 has been proposed. According to this cooling means, a cooling air passage is formed between the front door of the electronic device storage rack and the electronic device stored in the rack, and the ventilation fan blows the air from the cooling air passage toward the rear surface of the rack. The electronic equipment is cooled by sending cool air to the air.

  Further, in Patent Document 3, a cabinet rack is proposed in which a flat thermal insulation plate that divides the air flow inside the rack is attached. According to this cabinet rack, the exhaust heat exhausted from the electrical equipment is prevented from flowing back into the cool air passage for cooling the electrical equipment.

JP 2003-166729 A JP 2004-39675 A JP 2005-19856 A

  As in Patent Document 1, in a room having a local cooling device that directly cools exhaust heat exhausted indoors, it is necessary to increase the local cooling device every time the number of racks in the room increases, and the power consumption increases. There was an inconvenience. Moreover, since it is necessary to install a local cooling device at a position where exhaust heat is exhausted from the rack, there is also a disadvantage that the space in the room for storing the rack is narrowed.

  On the other hand, as in Patent Document 2, in the means for blowing cool air from the front side of the rack toward the rear side, the warm air after cooling the electronic equipment is discharged from the rack into the room. This warm air increases the temperature in the room, so that the power used by the cooling device that cools the room is increased accordingly.

  In addition, after the cool air that has cooled the electronic device is changed to warm air, this warm air raises the disadvantage of raising the temperature of the cool air before cooling. That is, in the cooling means of Patent Document 2, the cool air that has cooled the entire server from the front surface of the rack becomes warm air, circulates to the rear surface of the rack, and is then discharged from the upper end of the rack or the like. . However, if the warm air is not sufficiently discharged out of the rack, this warm air is circulated again to the front of the rack to warm the cool air before cooling, resulting in a disadvantage that sufficient cooling cannot be performed.

  Moreover, in the cabinet rack of patent document 3, although the backflow of the waste heat discharged | emitted from the electric equipment can be prevented with a thermal-insulation board, the waste heat discharged | emitted from a cabinet rack to room | chamber interior temperature. The increase is the same as in Patent Document 2.

  In addition, in a server rack or the like that supplies cool air from the front of the server to the inside of the server, if a heat insulation plate that prevents the backflow of exhaust heat is provided in the cool air passage as in Patent Document 3, The server installation side is partitioned by a heat insulating plate. In this case, there is a disadvantage that the heat shield plate obstructs various cords wired from the front of the server to the rear.

  In view of the above, the present invention was created from the above viewpoint to solve the conventional drawbacks, and it is possible to suppress the temperature rise in the room due to exhaust heat exhausted outside the rack and to uniformly cool the electronic devices in the rack. An object of the present invention is to provide a rack cooling apparatus for electronic equipment that can be used and that wiring of a server housed in the rack is also free.

The first means of the present invention is an air supply for supplying cold air taken in from the underfloor chamber Q to the front surface of the electronic device S mounted inside the rack P from the bottom surface of the rack P to the cold air passage 1 provided on the front surface of the electronic device S. A fan 2, an exhaust fan 3 that discharges warm air heated by heat generated by the electronic device S to the outside from the upper part of the rack P, and a partition plate that is mounted so as to partition the front surface of the electronic device S and the heat generating part of the electronic device S 4, in the rack cooling device for electronic equipment provided so that the warm air on the heat generating part side does not flow back into the cool air passage 1, the cool air from the underfloor chamber Q is placed in the rack P on the bottom surface of the rack P on the heat generating part side of the electronic equipment S. A cool air opening 5 to be supplied to the heat generating portion side is provided so that the temperature of the warm air discharged by the exhaust fan 3 is lowered by the cool air from the underfloor chamber Q and then discharged, and the rack on the heat generating portion side of the electronic device S is provided. Under the floor on the bottom of P An intake panel 8 provided with a cold air intake 8A for taking in cold air from the chamber Q and a louver 8B for adjusting the direction of the taken cold air is detachably installed so that the bottom part on the heat generating part side is auxiliary cooled. There is.

  The second means forms a warm air discharge passage 6 at the rear side of the heat generating portion side of the electronic device S and vertically below the exhaust fan 3, and the cool air opening portion 5 is a rack vertically below the warm air discharge passage 6. It is provided on the bottom of P.

The third means is provided by the supply fan 2 so as to supply the cool air from the underfloor chamber Q to the cool air intake port 8A of the intake panel 8.

A fourth means is a brush-like partition that opens a cable insertion opening in the partition plate 4 and seals the opening with a bristle material so as to allow the cable to pass through while blocking warm air on the heat generating part side. A board S4 is formed, the brush-like partition plate 4A is installed on the front side of the electronic device S, and a cable S1 wired from the front side of the electronic device S mounted inside the rack P to the heat generating part side of the electronic device S It is a means for solving the problem that it is provided so as to be inserted.

  According to the first aspect of the present invention, the cool air opening 5 for supplying cool air from the underfloor chamber Q into the rack P is provided on the bottom surface of the rack P on the heat generating portion side of the electronic device S, and warm air discharged by the exhaust fan 3 is provided. By providing the temperature after the temperature is lowered with cool air, the temperature rise in the room due to the exhaust heat exhausted outside the rack can be suppressed. In addition, an intake panel 8 provided with a cold air intake 8A for taking in cold air from the underfloor chamber Q and a louver 8B for adjusting the direction of the taken cold air is detachable on the bottom surface of the rack P on the heat generating part side of the electronic device S. By installing and providing auxiliary cooling at the bottom of the heat generating part side, it is possible to eliminate cooling unevenness that occurs on the heat generating part side of the electronic device S using the cold air from the underfloor chamber Q.

  According to a second aspect of the present invention, a warm air discharge passage 6 is formed on the rear surface of the electronic device S on the heat generating portion side and vertically below the exhaust fan 3, and the cool air opening portion 5 is a rack vertically below the warm air discharge passage 6. By providing it on the bottom surface of P, the cool air supplied from the underfloor chamber Q through the cool air opening 5 is directly mixed with the warm air exhausted by the exhaust fan 3, so that the temperature of the exhaust heat can be lowered extremely efficiently. it can. Therefore, as in Patent Document 1, it is not necessary to increase the indoor temperature without providing a cooling device for locally cooling. Moreover, since the cool air in the underfloor chamber Q is effectively used, an excellent energy saving effect can be obtained.

As in claim 3 , an intake panel 8 provided with a cold air intake 8 </ b> A and a louver 8 </ b> B is detachably installed on the bottom surface of the rack P on the heat generating part side of the electronic device S, and the underfloor chamber is provided from the intake panel 8. By adjusting the direction of the cool air by taking in the cool air from Q, and by providing the cool air from the underfloor chamber Q to the cool air intake port 8A of the intake panel 8 by the air supply fan 2, Cooling unevenness generated on the heat generating part side of the electronic device S can be eliminated by using the cool air from the chamber Q.

As in claim 4 , a brush-like partition plate 4A for inserting a cable is installed on the front side of the electronic device S, and is wired from the front surface of the electronic device S mounted inside the rack P to the heat generating part side of the electronic device S. The wiring of the electronic device S housed in the rack P can be freely performed by inserting the cable S1. Particularly, in a server rack of a type that supplies cool air from the front of the server to the inside of the server, it is suitable for wiring various cords from the front of the server to the rear.

  As described above, according to the present invention, it is possible to suppress the temperature rise in the room due to the exhaust heat exhausted outside the rack P, and to cool the electronic device S in the rack P uniformly. It has excellent effects such as freeing the wiring of the stored server.

  In the best mode of the present invention, the warm air discharge passage 6 is formed on the rear surface of the electronic device S on the heat generating portion side and vertically below the exhaust fan 3. A cool air opening 5 for supplying cool air from the underfloor chamber Q into the rack P is provided on the bottom surface of the rack P on the heat generating portion side of the electronic device S. The cold air opening 5 is provided on the bottom surface of the rack P vertically below the warm air discharge passage 6. The temperature of the warm air exhausted by the exhaust fan 3 is provided after being lowered by the cool air in the underfloor chamber Q. A plurality of substantially strip-shaped floor panels 7 and an intake panel 8 provided with a cold air intake 8A are detachably installed on the bottom surface of the rack P on the heat generating portion side of the electronic device S. Cold air from the underfloor chamber Q is taken in from the intake panel 8. A louver 8B is provided in the vicinity of the cold air intake 8A of the intake panel 8 to adjust the direction of the taken cold air. The air supply fan 2 is provided so as to supply cold air from the underfloor chamber Q to the cold air intake port 8A of the intake panel 8. Together with the partition plate 4, a brush-like partition plate 4A is installed on the front side of the electronic device S, and a cable S1 wired from the front surface of the electronic device S mounted in the rack P to the heat generating part side of the electronic device S is inserted. By providing it in such a way, the initial purpose is achieved.

  The device of the present invention is a partition plate 4 that is mounted so as to partition the front side of the electronic device S accommodated in the rack P and the heat generating portion side of the electronic device S, and the warm air heated by the heat generating portion of the electronic device S is provided. The present invention relates to a cooling device for an electronic equipment rack provided so as not to flow backward to the front side.

  In the apparatus of the present invention, the rack P that houses the electronic device S such as a server is provided with the cold air passage 1, the air supply fan 2, the exhaust fan 3, the partition plate 4, the cold air opening 5, the warm air discharge passage 6, and the like. Is.

  The cool air passage 1 leads from the opening 1A on the bottom surface of the rack P to the front surface of the electronic device S, and is provided so that the cool air taken into the rack P from the underfloor chamber Q is fed by the air supply fan 2. The illustrated cool air passage 1 is formed in a blower chamber 9 provided between the front surface of the electronic device S and the front door P1 of the rack P (see FIG. 1). The cool air passage 1 temporarily receives the cool air supplied from the air supply fan 10 and sends the cool air to the front surface of the electronic device S from the air blowing hole 9 </ b> A provided in the rear surface of the air blowing chamber 9.

  The air supply fan 2 is installed at the lower end portion of the rack P. In the illustrated example, the air supply fan 2 is installed inside a substantially cylindrical leg portion P2 that raises the bottom surface of the rack P and supports it in a bottom shape. An air supply fan 2 is installed on the opening Q1 of the underfloor chamber Q so as to supply cold air from the underfloor chamber Q to the cold air passage 1.

  The exhaust fan 3 discharges the warm air heated by the heat generated by the electronic device S from the upper part of the rack P to the outside of the rack P, and uses a larger fan than the air supply fan 2. This is because the cool air in the underfloor chamber Q can be taken into the heat generation side of the rack P by a separate system from the air supply fan 2. That is, a cool air opening 5 for supplying cool air from the underfloor chamber Q is provided on the bottom surface of the rack P on the heat generating portion side of the electronic device S, and the temperature of the warm air discharged by the exhaust fan 3 is set from the underfloor chamber Q. It is provided so as to be discharged after being cooled with cold air.

  A warm air discharge passage 6 is formed inside the rack P located vertically below the exhaust fan 3. The warm air discharge passage 6 is located behind the heat generating part side of the electronic device S and vertically below the exhaust fan 3. Further, the cold air opening 5 is provided on the bottom surface of the rack P vertically below the warm air discharge passage 6 so that the cold air in the underfloor chamber Q is directly taken into the warm air discharge passage 6. When the temperature of the warm air exhausted from the exhaust fan 3 is 40 ° C., the warm air is directly cooled by the cool air from the underfloor chamber Q, and the exhaust can be exhausted at approximately 30 ° C.

  Furthermore, the cold air in the underfloor chamber Q can be taken into the heat generating part side of the electronic device S by using the exhaust force of the exhaust fan 3 as a suction force. In this case, an intake panel 8 through which cool air passes is arranged on the bottom surface of the rack P. The intake panel 8 is a plate provided with a cold air intake 8A, and can be provided with a louver 8B for adjusting the direction of the taken cold air, and is detachably installed on the bottom surface of the electronic device S of the rack P on the heat generating part side. (See FIGS. 4 and 5). According to the intake panel 8, the cold air taken in from the cold air intake 8 </ b> A by the suction force of the exhaust fan 3 is blown in the direction of the louver 8 </ b> B, so that the bottom portion on the heat generating portion side can be auxiliary cooled. In the illustrated example, in order to send cool air to the left and right sides of the electronic device S, a pair of side opening portions 10 are opened on the left and right sides of the bottom surface of the rack P. The side opening 10 can efficiently cool both the left and right sides of the electronic device S on the heat generating portion side (see FIGS. 4 and 8).

  Further, the intake panel 8 can be supplied with cold air using the air supply fan 2. At this time, the cool air intake 8A of the intake panel 8 is installed in the vicinity of the exhaust fan 3, and the cool air from the underfloor chamber Q is supplied to the bottom surface of the electronic device S of the rack P through the air supply fan 2. Is. In this case, the cold air in the underfloor chamber Q is supplied by the air supply fan 2 and the exhaust fan 3.

  The partition plate 4 is provided so that the warm air on the heat generation side of the electronic device S does not flow back into the cool air passage 1. In the illustrated example, the electronic device S is mounted on a mount angle R that is not mounted. Then, the partition plate 4 is detachably attached to the opening of the mount angle Q where the electronic device S is not attached. At this time, the electronic device S mounts a rack mount type server that can be detachably mounted on the mount angle Q of the rack P. As a result, the cool air in the cool air passage 1 is taken into the server from an air intake port provided in the front of the server, cools necessary parts, and warm air is discharged from an exhaust port such as the rear surface of the server. . At this time, an auxiliary partition plate 4B provided with an intake 4Ba for taking in cold air from the partition plate 4 is also provided (see FIG. 6).

  The partition plate 4 blocks the warm air and hinders the cable S1 that is wired from the front surface of the electronic device S to the heat generating portion of the electronic device S. Therefore, a brush-like partition plate 4A is used as the partitionable plate 4 that can be wired. The brush-like partition plate 4A in the illustrated example is obtained by opening an opening 4Aa for inserting the cable S1 in the vertically long partition plate 4 and sealing the opening with the hair material 4Ab. The cable S1 can be passed through the space (see FIG. 8). Therefore, by arranging the brush-like partition plate 4A together with the partition plate 4, the cable S1 can be wired while blocking the warm air on the heat generating portion side. In the illustrated example, the brush-like partition plates 4A are attached to the left and right of the mount angle R (see FIGS. 6 and 7).

  The rack P may be anything as long as it is a rack P that stores the electronic device S, but a server rack in which a rack-mount server S is detachably mounted is particularly suitable. This type of rack P is a rack P in which mount angles R are erected on both left and right side surfaces inside the rack P, and a server S is mounted between the mount angles Q. In the present invention, a so-called 19-inch rack standardized to a width of 19 inches (482.6 mm) by the EIA (American Electronic Industry Association) is particularly suitable. However, a JIS standard “electronic equipment rack” should be used. Is also possible.

  In addition, each structure of the example of illustration in this invention is only one Example of this invention, and can change freely in the technical range currently known, such as a design change of the shape of each structural member, a dimension, change of a form, etc. Is something that can be done.

It is a perspective view which shows one Example of this invention. It is a sectional side view which shows one Example of the use condition of this invention. It is principal part sectional drawing which shows the bottom part of the rack of this invention. It is a top view which shows the bottom part of the rack of this invention. It is a sectional side view which shows one Example of the intake panel in this invention. It is a principal part perspective view which shows the partition plate in this invention. It is a principal part front view which shows one Example of the use condition of this invention. It is a principal part top view which shows the brush-like partition plate in this invention.

Explanation of symbols

P rack P1 Front door Q Underfloor chamber Q1 Opening R Mount angle S Electronic equipment S1 Cable 1 Cooling air passage 1A Opening 2 Air supply fan 3 Exhaust fan 4 Partition plate 4A Brush-like partition plate 4Aa Opening 4Ab Hair material 4B Auxiliary Partition plate 4Ba Inlet 5 Cold air opening 6 Warm air discharge passage 7 Floor panel 8 Intake panel 8A Cold air intake 8B Louver 9 Blower chamber 9A Blower hole 10 Side opening

Claims (4)

An air supply fan that supplies the cool air taken from the underfloor chamber to the front of the electronic equipment installed inside the rack from the bottom of the rack to the cool air passage provided in the front of the electronic equipment, and the warm air heated by the heat generated by the electronic equipment. Rack cooling for electronic equipment provided with an exhaust fan that discharges from the top to the outside, and a partition plate that is mounted to partition the front of the electronic device and the heat generating part of the electronic device so that the warm air on the heat generating part side does not flow back into the cool air passage In the device
The rack bottom surface of the heating portion of the electronic device, a cold air opening for supplying to the heat generating portion side of the inside of the rack cool air from the underfloor chamber provided to lower the temperature of the warm air is discharged at an exhaust fan in the cold air from the underfloor chamber The air intake panel with a cool air intake port that takes in cool air from the underfloor chamber and a louver that adjusts the direction of the cool air that is taken in is detachable. A rack cooling apparatus for electronic equipment, which is installed and provided so as to perform auxiliary cooling on a bottom part on a heat generating part side.   2. The electronic device according to claim 1, wherein a warm air discharge passage is formed at a rear side of the heat generating portion side of the electronic device and vertically below the exhaust fan, and the cold air opening is provided on a bottom surface of the rack vertically below the warm air discharge passage. Rack cooling system. The air supply fan, the cold air inlet of the intake panel, rack cooling device for an electronic device according to claim 1, wherein provided to supply cold air from the underfloor chamber.   A brush-like partition plate is formed in which an opening for inserting a cable is opened in the partition plate, the opening is sealed with a hair material, and the cable is inserted while blocking warm air on the heat generating portion side. The electronic device according to claim 1, wherein a partition plate is installed on the front side of the electronic device, and a cable wired from the front surface of the electronic device mounted in the rack to the heat generating portion side of the electronic device is inserted. Rack cooling system.

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