WO2002101528A2 - Computer cupboard and arrangement of a computer cupboard - Google Patents

Computer cupboard and arrangement of a computer cupboard Download PDF

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Publication number
WO2002101528A2
WO2002101528A2 PCT/DE2002/002086 DE0202086W WO02101528A2 WO 2002101528 A2 WO2002101528 A2 WO 2002101528A2 DE 0202086 W DE0202086 W DE 0202086W WO 02101528 A2 WO02101528 A2 WO 02101528A2
Authority
WO
Grant status
Application
Patent type
Prior art keywords
computer
front
characterized
cooling air
computer cabinet
Prior art date
Application number
PCT/DE2002/002086
Other languages
German (de)
French (fr)
Other versions
WO2002101528A3 (en )
Inventor
Erhard Klotz
Franz-Josef Knoop
Original Assignee
Fujitsu Siemens Computers Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20718Forced ventilation of a gaseous coolant
    • H05K7/20736Forced ventilation of a gaseous coolant within cabinets for removing heat from server blades
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/18Packaging or power distribution
    • G06F1/181Enclosures
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/18Packaging or power distribution
    • G06F1/181Enclosures
    • G06F1/182Enclosures with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI]
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/18Packaging or power distribution
    • G06F1/183Internal mounting support structures, e.g. for printed circuit boards, internal connecting means

Abstract

The invention relates to a computer cupboard in which several computer units (3) are housed one above the other. The computer units (3) comprise a front face (5) with holes (4), by means of which cooling air is drawn in and expelled through the rear face or the lateral rearward regions. The computer cupboard is provided with a front wall (6), a rear wall (7) and two side walls (8 and 9). Several solutions are disclosed to achieve an effective cooling of such a compute unit (3).

Description

description

Computer cabinet and arrangement of a computer cabinet

The invention relates to a computer cabinet with a

Front, rear and two side walls, a cooling air inlet at the bottom and a cooling air outlet at the top and / or the back, and an arrangement of a computer cabinet in a computer room with a double bottom and openings in the raised floor to the cooling air supply.

The temperature has a significant influence on the reliability of data processing systems. Higher ambient temperatures and resulting higher component temperatures have a negative effect on IT investments.

Affected the following areas in particular:

functionality

The term of electrical signals increases with increasing temperature. This results especially in fast processors when crossing certain temperature limits (currently about 100 ° crystal temperature) to malfunction.

wear

Storage media, and particularly magnetic tapes here are subject to wear by abrasion. The size of the Verschleißens increases with the temperature and rises above certain limits (from about 45 ° strip temperature) dramatically.

Failure rate and MTBF

The failure rate λ of components is usually determined by mechanisms whose reaction rate increases with heat and thus a higher temperature. That is, with a higher temperature, the failure rate increases to λ. This increase depends on many other influencing factors such as different component technologies, locations and so on, from. As a measure of the reliability of systems, the so-called MTBF (Mean Time Between Failures) is given general mine. This value is the reciprocal of the rate of failure (MTBF = 1: λ). In IT systems, the MTBF value halved at an increase in ambient temperature of about 15 ° C.

The temperature is therefore an essential factor for the functionality and reliability of computer systems.

Another key point in the creation of data centers is the optimal fire monitoring.

For this purpose, the computer units are incorporated into the above-described generic computer cabinets having front, rear and the side walls and near the Kühlluftauslas- ses a sensor is arranged with a fire alarm device in the cavities, so that the risk of fire can be detected immediately.

The previously known cabinets are open at the bottom and are supplied from below with cooling air that is supplied via a raised floor in the data center.

The cooling air outlet is carried out through a slot in the lid of the computer cabinet, which is disposed above the sensor tube with the fire alarm device.

In these computer cabinets, the holding devices for the computer units are usually 19 "chassis, arranged centrally and laterally alongside it are devices for cable management.

This type of cooling is sufficient for low-sensitive systems or systems that allow a cooling air passage from the bottom to the top. However, problems arise when normal standard units are installed on the bottoms in the cabinets, as this sufficient cooling air supply is more assured.

Standard Server systems are usually designed so that they suck in the air at the front and at the back post or through lateral openings in the rear area again. Substituting these systems in a top loading signed computer cabinet according to the prior art, so there is no free air intake from the front and no air is leaking back ensured. Cooling channels are made on the front and rear of the cabinet would be a risk of so-called forced air cooling, so that the apparatus again draws in the exhaust air discharged almost directly. This leads to a higher temperature within the system to disturbances in the functionality to greater wear as well as to an increased failure rate as described above.

The invention is therefore the object of disclosing a computer cabinet, which is also in computer units, which suck the air supply at the front side and eject the cooling air at the back, ensures sufficient cooling.

The object is on the one hand in a generic computer cabinet with a cooling air inlet at the bottom and a cooling air outlet at the top and / or rear of the cabinet achieved in that the male computer units from the front wall, the rear wall and the side walls are spaced apart between the side walls and formed / exhaust partition plate, which directs the supply air into the space between the front wall and front face of the male computer unit or units, so that a flow of the male computer units can be effected from front to back - the male computer units a supply air.

By the spacing of the male computer units from the walls ensures that sufficient air can get to the front side of the male computer units and also the exhaust air can flow from the backs or the side rear portions of the male computer units back or drain.

The separator plate leads to a supply air from the bottom to the front side of the male computer units and the exhaust air from the back side to the top side of the computer cabinet and on the other it prevents the computer units ejected directly to the rear exhaust air through a lateral runaround again the front of one eye.

According to a preferred embodiment, the separating plate from below the rear leads to the front. This provides a large-scale air inlet and outlet and a large area is ensured.

The top of the computer cabinet is preferably open or has a perforated lid. The back may be formed as open or permeable to air, alternatively or additionally. The underside of the computer cabinet is also preferably open or hen verse- with a grid floor.

Are in certain slots for the computer units no computer units added, so dum myeinschübe are preferably used to prevent the ejected from the other computer units exhaust air can flow through the empty slot to the front sides of the other computer units and thus an undesired convection would arise.

An alternative embodiment of the dummy slots provides that the separating plate is formed opposite of the side walls, so that it is in non-built-in computer units, the cooling air does not flow into the free slots, but is also directed to the front side of the built-in computer units.

L0

Preferably, the front sides of the free slots are closed by a diaphragm in this embodiment.

A further embodiment of the invention provides to form the 15 partition plate and below the lowermost receiving shaft for a computer unit, so that the cooling air between the front wall and front is passed the male computer units.

20 In this embodiment, by the separating sheet, the

Cooling air only directed into the space between the front wall and front and can not enter the space between the side walls and the sides of the male computer units. If necessary, here also the

Separating plate 25 formed vertically, thus preventing a lateral flow around the computer units.

Preferably, the separating plate is formed also above the receiving shaft of the top male excluded computer unit 30, so that the cooling air also can not flow around the top computer unit.

Alternatively, the object is also fertilize by a computer cabinet with a front wall, a rear wall and two Seitenwan- 35, a cooling air inlet at the bottom and a

Cooling air outlet at the top and / or the back dissolved, wherein the male computer units from the front wall and the rear wall are spaced apart and the cooling air inlet between the front wall and the front sides of the male computer units at the bottom of the computer cabinet is formed and the cooling air outlet at the Rückenwandung and / or is formed between the rear wall and the rear sides of the male computer units at the top of the computer cabinet.

Likewise, the object is achieved by an arrangement of a computer cabinet in a computer room with a double bottom and openings in the raised floor to the cooling air supply by the computer cabinet includes an air permeable front door and the cooling openings before and / or are arranged below the front portion of the computer cabinet.

By the air permeable front door and the cooling holes, before and / or below the front portion of the computer cabinet is assured that the cooling air via the air-permeable front door can move to the front side of the computer units or at a location spaced from the front sides of the computer units front door and from below in can enter the space between the front door and computer units.

The openings in the double bottom are preferably formed as a slit plates on which the computer cabinet is provided with its front region behind or vehicle.

In this arrangement, preferably also the rear of the cabinet is permeable to air is formed so that the cooling air can flow freely out at the back. For Konvektionssteigerung cooling air nozzles can be disposed at the rear of the cabinet in the ground, which will accelerate the ascent of warm air. The invention will be explained in more detail shown in the drawings embodiments.

In the drawings:

Figure 1 is an oblique view of a computer cabinet without cover plates,

2 shows the view according to figure 1 in an alternative embodiment,

Figure 2a schematically shows the section II-II in Figure 2,

3 shows the view according to Figure 1 or 2 with casing,

4 shows a longitudinal section through a third embodiment of the computer cabinet,

4a shows the section IV-IV in Figure 4,

5 shows a longitudinal section of a fourth embodiment of the computer cabinet,

Figure 5a is a cross section of a first variant of the embodiment according to FIG 5,

Figure 5b is a cross section of a second embodiment of the variant according to FIG 5,

6 shows an arrangement of a computer cabinet in a computer room,

7 schematically shows the arrangement of computer cabinets overall measure figure 6 in a computer room. 1 shows an oblique view of a computer cabinet, such as is typically used in computer rooms.

In the computer cabinet 2 computer units 3 are inserted in so-called receiving shafts 1 by telescopic rails.

The slots are usually 19 "bays, are added to which server. The front of the modules are provided with front panels. 5

The cooling of the server in the computer units 3 takes place via holes 4 in the front panel 5 of the computer units. 3

By one or more fans within the computer units 3, the air is sucked through the holes 4 in the front panel 5 and is discharged again at the back or the rear lateral regions of the computer units. 3

In Figure 1, the computer cabinet without paneling ones shown, is up.

Alone for fire safety reasons this is, as shown in Figure 3, provided with a cladding, wherein the cladding has a front wall 6, a rear wall 7 and two side 8 and 9, which close the computer cabinet around.

For cooling the computer cabinet is situated generally in a room with a double bottom, the cooling air is guided via the raised floor 10th

The raised floor 10 has on the point at which the computer unit is installed, an opening or a slot bottom 11, via which respectively which the cooling air is fed into the computer cabinet. The computer cabinet is therefore equipped open at the bottom or with a grid floor, the air inlet 12 acts as a coolant. The top of the computer cabinet is also open or, as shown in Figure 1, provided with a lattice-shaped cover 13 forming the cooling air outlet fourteenth

Since the computer units 3 to suck the cooling air from the front and back again emit respectively at the lateral rear portions, the walls are spaced to 9 of the computer units 3. 6

For this purpose, the computer cabinet includes a rectangular rail frame 15, fixed to advertising which the walls 6 to 9 the. To avoid that the cooling air only via the

Cooling air inlet is introduced, flows past the computer units 3 side and on the cover 13 side of the computer units 3 flows out again in each case through the cooling air outlet 14 and not, as desired, the computer units flows through per se, is a partition plate 16 in the space between the computer units 3 and the side walls 8 and 9 is provided, which leads down obliquely forward from behind and above.

By the partition plate 16 which bridges the entire gap substantially that flowing in via the cooling air inlet of the cooling air is conducted to the front panel 5, the computer units 3 and can be drawn there through the holes 4 is ensured.

Furthermore, it is ensured that the ejected at the back of cooling air can flow to the front panel 5 with the holes 4 do not again but is directed to the cooling air outlets 14 at the top of the computer cabinet.

Thus, the risk is avoided that a convection is created, and already heated cooling air is sucked in again. Merely for purposes of illustration no computer unit 1 is inserted in the lower receiving slot. 1

If a receiving shaft 1 is not required in the computer cabinet, a dummy 17 is inserted in order to ensure effective cooling air passage. If the dummy 17 is missing, then the risk of the circulating air would be given again by could reach the outflowing Kühlluffc at the rear of computer units through the empty receiving shaft to the front panel 5 and hence to the holes 4, through which the cooling air is sucked in again.

To increase the cooling air flow cooling air nozzles may be used in the bottom of the cabinet or in the raised floor.

Figure 2 shows the computer cabinet of Figure 1 in an alternative embodiment. In this embodiment, the separating plate 16 is formed in the cooling air entrance and along the computer units 3, so that when an unoccupied receptacle shaft 1, no dummy, but merely a blind aperture must be mounted 18th

The lower receiving shaft 1 is also unoccupied for illustrative purposes.

According to an embodiment not illustrated, also the air outlet area along the computer units 3 is provided with a separating plate sixteenth In this embodiment, however, it must be ensured that the computer units have no air outlet on the side rear area.

Figure 2a shows the section II-II of Figure 2 schematically, in WO-to better illustrate the front wall 6, the rear wall 7 and the two side walls are shown schematically. 8 and 9 With arrows the path of the cooling air is illustrated. This comes from the bottom, either directly in front of the front panel 5 or flows down the side of the computer units 3, and is passed over the separating plate 16 to the front panel. 5 Over the holes 4 in the front panel 5, the cooling air flows out again into the computer units 3 and at the back of the computer units 3 and the rear side area of ​​the computer units. 3

Figure 4 shows a 'third embodiment of the invention also provided with a cooling air inlet 12 at the bottom and a cooling air outlet 14 at the top. According to this embodiment, the separating plate 16 is formed below the lowermost computer unit 3 and includes the rear wall and to the side walls towards an airtight seal, so that the cooling air only between the front side 5 and the inner side of the front wall can pass. 6

Also above the * "top computer unit a separating plate 16 is arranged to prevent direct outflow of the cooling air at the entrance of an open or lattice-shaped upper side of the computer cabinet in the area between the front wall 6 and the computer unit. 3

4a shows a schematic section through the computer cabinet in accordance with Figure 4. Between the side walls 8 and 9 and the sides of the computer unit 3 is both horizontally and vertically, the separating plate 16 is provided in order to flow an environmental prevent the computer units. 3

Figure 5 and Figure 5a and 5b show further alternative embodiments of the invention. In Figure 5, the lowermost computer unit 3 is arranged directly in -Bodenhöhe and the cooling air inlet arranged only in the area between the front wall 6 of the computer cabinet and the front sides 5 of the computer units. At the top, the lid 13 le- diglich a slit-shaped cooling air outlet 14 in the area between the back of the computer units 3 and the rear wall 7 on.

Figure 5a and 5b schematically show cross sections of a derar- th computer cabinet, wherein in figure 5a, the side walls are not spaced apart from the computer units 3 and in Figure 5b in the computer cabinets according to the Figures 1 to 4 a spaced-connection between the side walls 8, 9 and computer unit 3 is present in each case. In the embodiment according to FIG 5b 9 separating plates 16 are again laterally between the computer unit 3 and the side walls 8, are provided which also prevent another reflow of computer unit 3 with cooling air.

Located and horizontal partitions 16 are at the floor level between the walls 7,8 and 9, if the computer cabinet is not placed on a slit-shaped cooling air inlet 12, but on planar slit plates and thus a cooling air entry must be prevented in this area.

Figure 6 shows a further embodiment of the invention, wherein the computer unit is also placed on a raised floor 10 with openings 11 in the form of slotted plates here.

This computer unit has a front wall 6 with a plurality of openings 19, via which the cooling air can be sucked in. The rear face 7 is also provided with a plurality of openings for the cooling air outlet. The side walls 8, 9 and the cover 13 are closed.

To increase the convection cooling performance are at the rear tion nozzle or cooling air nozzles 20 are arranged, which displace the warm outlet air quickly. This computer unit is so made according to the invention on the slit plates 11 so that they are arranged in front of the computer cabinet and in the front area below the computer cabinet, so that the cooling air in the space between the front wall 6 and the front panel 5 can reach the computer units.

Figure 7 shows the arrangement of several computer cabinets, as shown in 6. The preparation is to be noted that the front relationship way back sides are facing each other in order to ensure a uniform flow direction between the rows of computer cabinets.

The computer cabinets may only next to each other and not be located too close to walls.

About half of the computer cabinets 21, the ceiling of the computer room is schematically shown, in which also openings 22 in the form of slotted plates provided for sucking the cooling air.

These apertures 22 are advantageously always arranged above the rear sides of the computer cabinets at which the cooling air escapes.

LIST OF REFERENCE NUMBERS

1 Recording ducts

2 telescopic rails

Three computer units

4 holes

5 front panel

6 front wall

7 Rückenwandung

8 side

9 side

10 double bottom

11 opening slot bottom

12 cooling air intake

13 lid

14 cooling air outlet

15 Holm scaffolding

16 Divider

17 dummy slot

18 blind cover

19 opening

20 cooling air nozzle

21 ceiling

22 holes

Claims

claims
1. Computer unit with a front wall (6), a rear wall (7) and two side walls (8 and 9), a cooling
5 air inlet (12) at the bottom and a cooling air outlet (14) at the top and / or the back, characterized in that the male computer units from the front wall (6), the Rückenwandung (7) and the side walls (8 and 9)
is formed LO are spaced apart and between the side walls (8, 9) and the male computer units (3) a supply / exhaust air baffle (16) which supply air into the space between the front wall (6) and front panel (5) of the male computer units (3) passes, so that a throughput
L5 can be carried out flow of the male computer units (3) from front to back.
2. Computer cabinet according to claim 1, characterized in that
20 the separating plate (16) extends from the rear lower end of the computer cabinet to the front upper end of the computer cabinet.
3. Computer cabinet according to claim 1 or 2,
25 characterized in that the top is open, or with a perforated lid is provided (13).
4. Computer cabinet according to one of claims 1 to 3, 30 characterized in that the bottom is open, or is air permeable.
5. Computer cabinet according to one of claims 1 to 4, 35 characterized in that the computer cabinet comprising a plurality of superposed receiving shafts (1) for computer units (3) and those receiving shafts (1), in which no computer unit (3) is inserted, a so-called dummy slot (17) is inserted.
6. Computer cabinet according to one of claims 1 to 4, characterized in that the separating plate (16) also opposite the side walls (8, 9) is formed in the region of the sides of the male computer units, so that, when not inserted computer units (3) cooling air does not bays in the empty recording can pass (1) but is passed to the front side of the computer units.
7. Computer cabinet according to claim 6, characterized in that the non with computer units (3) occupied the receiving shafts (1) are provided on the front side with a blind cover (18) preventing an inflow of the cooling air in the unused receiving shafts (1).
8. Computer cabinet according to claim 1, characterized in that the separating plate (16) below the lowermost receiving shaft (1) from the lower rear portion of the computer cabinet to the lower front region and from the lower front end of the receiving shaft (1) to the upper end of the upper recording the shaft extends.
9. Computer cabinet according to claim 8, characterized in that the separating plate is formed above the upper receiving shaft (1) in the area between the front side of the upper receiving shaft (1) and the inside of the front wall (6).
10. Computer cabinet according to claim 8 or 9, characterized in that the separating plate (16) below the lower receiving shaft (1) is formed between the rear wall (7) and the rear of the receiving bay (1).
11. computer cabinet with a front wall (6), a rear wall (7) and two side walls (8 and 9), a cooling air inlet (12) at the bottom and a cooling air outlet (14) at the top and / or back, characterized in that the male computer units (3) from the front wall (6) and the rear wall (7) are spaced apart and the cooling air inlet (12) between the front wall (6) and the front sides of the male computer units (3) on the underside of the computer cabinet (3) is formed and the cooling air outlet (14) is attached to the rear wall (7) and / or formed between the rear wall (7) and the rear sides of the male computer units (3) at the top of the computer cabinet.
12. The arrangement of a computer cabinet in a computer room with a double bottom (10) and openings (11) in the double bottom, through which the cooling air is supplied, characterized in that the computer cabinet includes an air permeable front door and the openings (11) in front of and / or beneath the front portion of the computer cabinet are arranged.
13. An arrangement according to claim 12, characterized in that the openings (11) are formed as slotted plates.
14. An arrangement according to claim 12 or 13, characterized in that to be included in the computer cabinet computer units (3) and its front side (5) of the front wall (6) or air-permeable front door of the computer cabinet are spaced apart and one at the bottom of the computer cabinet in this intermediate space cooling air inlet (12) is formed, and the openings (11) in the double bottom (10) are also arranged in this intermediate space.
15. An arrangement according to any one of claims 12 to 15, characterized in that the rear wall (7) of the computer cabinet is air-permeable.
16. An arrangement according to any one of claims 12 to 16, characterized in that arranged behind the computer cabinet in a raised floor cooling air nozzle (20) for Konvektionssteigerung.
PCT/DE2002/002086 2001-06-12 2002-06-07 Computer cupboard and arrangement of a computer cupboard WO2002101528A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10128367.9 2001-06-12
DE2001128367 DE10128367A1 (en) 2001-06-12 2001-06-12 Computer cabinet and arrangement of a computer cabinet

Publications (2)

Publication Number Publication Date
WO2002101528A2 true true WO2002101528A2 (en) 2002-12-19
WO2002101528A3 true WO2002101528A3 (en) 2003-10-30

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DE (1) DE10128367A1 (en)
WO (1) WO2002101528A3 (en)

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EP1467453A2 (en) * 2003-04-11 2004-10-13 Vacon Oyj Arrangement for the placement of frequency converters
EP1467453A3 (en) * 2003-04-11 2008-07-30 Vacon Oyj Arrangement for the placement of frequency converters
EP2252136A3 (en) * 2003-05-13 2015-05-20 Schneider Electric IT Corporation Rack enclosure
NL2006026C (en) * 2011-01-18 2012-07-19 Dataxenter Ip B V Housing for electrical equipment.
EP2531013A1 (en) * 2011-05-30 2012-12-05 Brennercom S.p.A. A cooling system for data centres.
WO2014083078A1 (en) * 2012-11-29 2014-06-05 Eaton Industries (Netherlands) B.V. Natural parallel ventilation inside a low voltage system

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