WO2008021504A1 - Methods and systems for cooling a computing device - Google Patents
Methods and systems for cooling a computing device Download PDFInfo
- Publication number
- WO2008021504A1 WO2008021504A1 PCT/US2007/018277 US2007018277W WO2008021504A1 WO 2008021504 A1 WO2008021504 A1 WO 2008021504A1 US 2007018277 W US2007018277 W US 2007018277W WO 2008021504 A1 WO2008021504 A1 WO 2008021504A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat
- computer system
- region
- fins
- enclosure
- Prior art date
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
Definitions
- Embodiments generally relate to methods and systems for cooling a computing device.
- a computing device e.g., a thin client device
- a computing device is designed to be operable under different orientations.
- a user may place a thin client device horizontally on his or her desk.
- a user may mount a thin client device vertically on a [0005] wall.
- a user may attach a thin client device to the rear side of a computer monitor.
- conventional cooling mechanisms often cannot adapt to different orientations and can only function properly when a computing device is situated in a default orientation.
- a computer system includes an enclosure having a number of vents distributed across different portions of the enclosure to provide different thermal pathways to transfer heat to air surrounding the computer system.
- the computer system is configured to be operable under different orientations. For example, the computer system can operate while placed horizontally on a desk or mounted vertically on a wall.
- the enclosure is designed such that when the computer system is operating under a particular orientation, then at least one or more of the thermal pathways is able to transfer heat to air surrounding the computing system.
- the computer system also includes a first divider and a second divider that reside within the enclosure.
- the first divider and the second divider define a first region, a second region, and a [0010] third region.
- the third region is between the first region and the second region.
- a processor and optionally a chipset reside within the third region of the enclosure.
- a first cooling assembly is thermally coupled to the processor.
- the first cooling assembly includes a first heat sink for transferring heat from the processor to surrounding air and a first heat pipe thermally coupled to the first heat sink to facilitate the transfer of heat from the first heat sink to a set of fins residing within the first region.
- a second cooling assembly is thermally coupled to the chipset.
- the second cooling assembly includes a second heat sink for transferring heat from the chipset to surrounding air and a second heat pipe thermally coupled to the chipset to facilitate the transfer of heat from the second heat sink to a another set of fins residing within the second region.
- embodiments allow a computer system to be efficiently cooled while it operates under different orientations. Moreover, embodiments accomplish this without using a cooling mechanism that includes moving parts, such as a fan. As a result, the computer system is more reliable and essentially noise free.
- Figure 1 illustrates a computing device, in accordance with an embodiment of the present claimed subject matter.
- Figure 2 illustrates two thermal pathways directing heat away from a computing device, in accordance with an embodiment of the present claimed subject matter.
- Figure 3 illustrates two thermal pathways directing heat through a perforated surface and away from a computing device, in accordance with an embodiment of the present claimed subject matter.
- Figure 4 illustrates a top view of a first cooling assembly and a second cooling assembly, in accordance with an embodiment of the present claimed subject matter.
- Figure 5 illustrates a perspective view of a first cooling assembly and a second cooling assembly, in accordance with an embodiment of the present claimed subject matter.
- Figure 6 illustrates four thermal pathways that direct heat away from a first cooling assembly and a second cooling assembly, in accordance with an embodiment of the present claimed subject matter.
- Figure 7 illustrates copper inserts for a first cooling assembly and a second cooling assembly, in accordance with an embodiment of the present claimed subject matter.
- Figure 8 illustrates two thermal pathways directing heat away from a computing device placed in a horizontal position, in
- Figure 9 illustrates two thermal pathways directing heat through a number of vents and away from a computing device placed in a horizontal position, in accordance with an embodiment of the present claimed subject matter.
- Figure 10 illustrates three thermal pathways directing heat away from a mounted computing device, in accordance with an embodiment of the present claimed subject matter.
- Figure 11 illustrates three thermal pathways directing heat away from a mounted computing device (with an angular differential of 180 degrees than the computing device in Figure 10), in accordance with an embodiment of the present claimed subject matter.
- Figure 12 illustrates a thermal pathway directing heat through and away from a perforated portion of a mounted computing device, in accordance with an embodiment of the present claimed subject matter.
- Figure 13 illustrates three thermal pathways directing heat away from a computing device mounted on a flat screen display, in accordance with an embodiment of the present claimed subject matter.
- Figure 14 illustrates a flowchart for cooling a computing device upon which embodiments in accordance with the present claimed subject matter can be implemented.
- Figure 15 illustrates a flowchart for forming a computing device upon which embodiments in accordance with the present claimed subject matter can be implemented.
- a cooling mechanism that uses moving parts is not desirable because it increases noise level and reduces reliability. This is due in part to that fact that thin client devices are often deployed in places where reliability and low noise level is of paramount importance. For instance, thin clients are often deployed in financial centers, banking centers, administrative centers, call centers, medical centers, and various kiosks. The importance of reliability, for example, in a financial center is self evident as a crash caused by a failure in the cooling mechanism can lead a serious transaction error. Furthermore, since a user of a thin client device is often situated in close proximity to the thin client device, a high noise level can irritate the user and lead to decreased productivity.
- an embodiment illustrates a cooling mechanism that does not require the use of a fan [0038] or other types of moving parts.
- the cooling mechanism is flexible and can adapt to different physical orientations of the computer system. As such, a computer system is efficiently cooled whether it is in a vertical position, a horizontal position, or a mounted position.
- FIG. 1 illustrates a computing device 100, in accordance with an embodiment of the present claimed subject matter.
- Computing device 100 includes an enclosure 102, remote fins 104, remote fins 106, first heat sink 110, second heat sink 108, first heat pipe 114, second heat pipe 112, first divider 118, and second divider 116.
- the computing device 100 includes a processor (not shown in Figure 1 ) and a chipset (not shown in Figure 1 ).
- the processor resides within the enclosure 102 and is located underneath the first heat sink 110.
- the chipset e.g., a northbridge and southbridge chipset
- computing device 100 is shown and described as having certain numbers and types of elements, the present claimed subject matter is not so limited; that is, computing device 100 may include elements other than those shown, and may include more than one of the elements that are shown. For example, computing device 100 can include additional cooling mechanisms. Further, although computing device 100 is illustrated under the present arrangement of elements, embodiments are not limited to the present arrangement of elements illustrated in Figure 1.
- the enclosure 102 has a number of vents distributed across different portions of the
- vents in one example, are evenly spaced circular perforations. In another example, the vents can be other types of perforations (e.g., rectangular perforations) distributed across the enclosure.
- the computing device 100 is configured to be operable under different orientations (e.g., mounted on the rear portion of a flat screen, placed horizontally on a desk, or positioned vertically on a desk).
- the computing device 100 is designed such that when the computing device 100 is operating under a particular orientation, then at least one or more of the available thermal pathways is able to transfer heat to air surrounding the computing device 100.
- a first divider 118 and a second divider 116 reside within the enclosure 102 to define a first region 176, a second region 172, and a third region 174.
- a function served by the first divider 118 is to create a thermal wall between the first region 176 and the third region 174 such that the heat being dissipated by remote fins 106 residing within the first region 176 does not flow back towards the third region 174.
- heat dissipated by the remote fins 106 residing within the first region 176 is more effectively directed away from the computing device 100.
- a function served by the second divider 116 is to create a thermal wall between the second region 172 and the third region 174 such that the heat being dissipated by remote fins 104 residing within the second region 172 does not flow back towards the third region 174.
- heat dissipated by the remote fins 104 residing within the first region 176 is more effectively directed away from the computing device 100.
- a first cooling assembly (e.g., heat sink and heat pipe) is thermally coupled to the processor.
- the first cooling assembly includes the first heat sink 110 [0046] for transferring heat from the processor to surrounding air and the first heat pipe 114 thermally coupled to the first heat sink 110 to facilitate the transfer of heat from the first heat sink 110 to remote fins 106.
- Remote fins 106 reside within the first region 174.
- the first heat pipe 114 is appropriately curved such that the processor and the remote fins 106 are substantially parallel with respect to each other.
- the first heat pipe 114 includes a metal weave interior for conducting heat.
- the first heat pipe 114 includes a copper enclosure with a wicking structure for transferring liquid (e.g., water).
- a second cooling assembly (e.g., heat sink and heat pipe) is thermally coupled to the chipset.
- the second cooling assembly includes a second heat sink 108 for transferring heat from the chipset to surrounding air and a second heat pipe 112 thermally coupled to the chipset to facilitate the transfer of heat from the second heat sink 108 to remote fins 104.
- Remote fins 104 reside within the second region 172.
- Figure 2 illustrates a first thermal pathway 1102 and a second thermal pathway 1104 from which heat can be transferred from the computing device 100 into the surrounding air.
- the first thermal pathway 1102 transfers heat in a perpendicular direction away from the computing device 100.
- the second thermal pathway 1104 transfers heat away from the computing device 100 in a direction that is parallel to the vertical axis of the computing device 100.
- Figure 3 illustrates a view of the computing device where the enclosure 102 includes a perforated portion 126 that allows
- the perforated portion 126 is made of metal which has evenly spaced circular perforations. While the computing device 100 is in this orientation, [0051] heat can be dissipated at least via thermal pathway 1108 and thermal pathway 1106. With thermal pathway 1108, heat flows perpendicularly through the perforated portion 126 and away from the interior region of the computing device 100. With thermal pathway 1106, heat flows in a direction parallel to the vertical axis of the computing device 100, through the vent on the top portion of the enclosure 102 (not shown in Figure 3), and away from the computing device 100.
- FIG. 4 A more detailed view of the remote fins 104, remote fins 106, first heat sink 110, second heat sink 108, first heat pipe 114, and second heat pipe 112 are shown in Figure 4.
- the first heat sink 110 is thermally coupled with a processor and the second heat sink 108 is thermally coupled with a chipset, such as a northbridge and southbridge chipset.
- the first heat sink 110 is thermally coupled with the processor via a copper insert 122 (shown in Figure 7).
- the second heat sink 108 is thermally coupled with the chipset via a copper insert 120 (shown in Figure 7).
- the first heat sink 110 When thermally coupled, the first heat sink 110 absorbs heat from the processor. The absorbed heat is dissipated in at least two ways. First, the first heat sink 110 dissipates the absorbed heat into surrounding air via a number of heat sink fins 130 (illustrated in Figure 5). Second, the first heat pipe 114 transfers heat from the first heat sink 110 to remote fins 106 (e.g., aluminum fins). Remote fins 106 then dissipate the heat into surrounding air.
- remote fins 106 e.g., aluminum fins
- the second heat sink 108 absorbs heat from the chipset.
- the absorbed heat is dissipated in at least two ways. First, the second heat sink 108
- [0056] dissipates the absorbed heat into surrounding air via a number of heat sink fins 132 (illustrated in Figure 5). Second, the second heat pipe 112 transfers heat from the second heat sink 108 to remote fins 104 (e.g., aluminum fins). Remote fins 104 then dissipate the heat into surrounding air.
- remote fins 104 e.g., aluminum fins
- Figure 6 illustrates a perspective view of how heat can be dissipated.
- Figure 6 shows thermal pathway 1134, thermal pathway 1136, thermal pathway 1138, and thermal pathway 1140.
- thermal pathway 1134 transfers heat from remote fins 106 into surrounding air
- thermal pathway 1136 transfers heat from heat sink 110 into surrounding air
- thermal pathway 1138 transfers heat from heat sink 108 into surrounding air
- thermal pathway 1140 transfer heat from remote fins 104 into surrounding air.
- the first heat pipe 114 and/or the second heat pipe 112 can be a sintered heat pipe.
- the sintered heat pipe comprises a copper enclosure with a wicking structure for transferring a fluid (e.g., water). The fluid is utilized to move heat from one location of the heat pipe to another location of the heat pipe.
- a fluid within a heat pipe is used to transfer the heat from a processor towards a number of heat dissipating fins.
- an advantage of the present claimed subject matter is that the cooling mechanism is flexible and can adapt to different physical orientations of the computer device 100.
- the computer system 100 is efficiently cooled whether it is in a vertical position, a horizontal position, or a mounted position.
- Figure 8 shows how the computing device 100 in a horizontal position is efficiently cooled.
- Figure 8 shows thermal pathways 1110 [0060] and 1112 from which heat can be dissipated. Specifically, heat can rise and travel vertically away from computing device 100 via thermal pathway 1110. Also, heat can dissipate through a side vent, such as vent 150, and be transferred into surrounding air via thermal pathway 1112.
- Figure 9 shows the computing device 100 in a different horizontal position. In contrast to Figure 8, where the heat sink 110 is facing up, Figure 9 shows the computing device 100 with the heat sink 110 facing down. Here, heat is dissipated via thermal pathways 1114 and 1116. Thermal pathway 1116 transfers heat from the computing device 100 through vent 152 to the surrounding air. Thermal pathway 1114 transfers heat from the computing device 100 through a top portion of the enclosure that is perforated (not shown in Figure 9).
- FIG 10 illustrates the computing device 100 in a mounted position.
- Thermal pathways 1118, 1121 , and 1120 transfer the heat from the computing device 100 into the surrounding air.
- thermal pathways 1118, 1121 , and 1120 essentially form right angles with one another.
- thermal pathways 1118, 1121 , and 1120 are generally orthogonal with one another.
- Figure 11 shows computing device 100 in a different mounted position. Specifically, the orientation of computing device 100 shown in Figure 11 differs from the orientations of computing device 100 shown in Figure 10 by 180 degrees. In other words, a 180 degree rotation of computing device 100 shown in Figure 10 around an imaginary axis that is perpendicular to the wall would place it in the same orientation as the computing device 100 shown in Figure 11.
- Figure 11 illustrates thermal pathways [0066] 1126, 1127, and 1128 that transfer the heat from the computing device 100 into the surrounding air.
- Figure 12 illustrates a computing device 100 with a perforated portion 126. The perforations on perforated portion 126 allow heat to be dissipated via thermal pathway 1124.
- Figure 13 illustrates computing device 100 mounted on the rear portion of a flat screen display 300. While in this mounted position, heat can be dissipated at least via thermal pathways 1130, 1132, and 1134. Thermal pathways 1130, 1132, and 1134 may form substantially right angles with one another.
- FIG 14 illustrates a flowchart 1400 for cooling a computing device 100 upon which embodiments in accordance with the present claimed subject matter can be implemented.
- flowchart 1400 Although specific steps are disclosed in flowchart 1400, such steps are exemplary. That is, embodiments of the present claimed subject matter are well suited to performing various other or additional steps or variations of the steps recited in flowchart 1400. It is appreciated that the steps in flowchart 1400 can be performed in an order different than presented.
- the process starts.
- a first heat sink 110 is thermally coupled to the processor.
- the first heat sink 110 has a plurality of evenly spaced aluminum fins (e.g, heat sink fins 130). The spacing between the aluminum fins is calculated to maximize heat dissipation.
- the first heat sink 110 is attached to the processor via a copper insert 122.
- the first heat sink 110 can be made of [0070] different types of thermal conductors other than copper and aluminum. For example, gold and silver are efficient thermal conductors.
- heat from the processor is dissipated via the first heat sink 110 into surrounding air.
- the copper insert 122 is in thermal contact with the processor and absorbs heat from the processor. The absorbed heat is then dissipated by the plurality of fins (e.g., heat sink fins 130).
- heat from the processor is transferred with a first heat pipe 114 to a first plurality of remote fins 106.
- the first heat pipe 114 provides another way of dissipating the heat from the first heat sink 110.
- the plurality of remote fins 106 in one example, includes an array of rectangular aluminum fins that dissipate heat efficiently.
- the first heat sink 110 is coupled with a thermal pad and the thermal pad is in physical contact with a chassis of the computing device 100. In this way, heat from the first heat sink 110 is directed into the chassis, which dissipates heat into surrounding air.
- heat is directed away from chipset residing within the computing device 100. Again, heat is directed away from the chipset in at least two ways described in block 1416 and 1418.
- a second heat sink 108 is coupled to the chipset.
- heat from the second heat sink 108 is dissipated into surrounding air.
- heat from the second heat sink 108 is transferred with the second heat pipe 112 into a second plurality of remote fins 104.
- vents e.g., vent 152 of Figure 9
- the vents are evenly spaced perforations (e.g., circular perforations) that are
- the computing device 100 can be placed in different orientations without blocking off airflow.
- the process ends.
- FIG. 15 illustrates a flowchart 1500 for forming a computing device 100 upon which embodiments in accordance with the present claimed subject matter can be implemented. Although specific steps are disclosed in flowchart 1500, such steps are exemplary. That is, embodiments of the present claimed subject matter are well suited to performing various other or additional steps or variations of the steps recited in flowchart 1500. It is appreciated that the steps in flowchart 1500 can be performed in an order different than presented. At block 1502, the process starts.
- an enclosure 102 is formed.
- the enclosure 102 is designed such that if the computing device 100 is operating under a particular orientation, then at least one or more of the thermal pathways is able to transfer heat to air surrounding the computing device 100.
- a first divider 118 e.g., a perforated plate residing within the enclosure 102 is provided.
- a second divider 116 residing within the enclosure 102 is provided.
- the first divider 118 and the second divider 116 define a first region 176, a second region 172, and a third region 174.
- the third region 174 (e.g., an interior region) is between the first region 176 and the second [0081] region 172.
- a processor and a chipset reside within the third region 174 of the enclosure 102.
- a processor residing within the third region 174 of the enclosure 102 is provided.
- a chipset residing within the third region 174 of the enclosure 102 is provided.
- a first cooling assembly is thermally coupled to the processor.
- the first cooling assembly includes a first heat sink 110 for transferring heat from the processor to surrounding air and a first heat pipe 114 thermally coupled to the first heat sink 110 to facilitate the transfer of heat from the first heat sink 110 to a set of remote fins 106 residing within the first region 176.
- a key purpose of the first divider 118 is to create a thermal wall between the first region 176 and the third region 174 such that the heat being dissipated by the set of remote fins 106 residing within the first region 176 does not flow back towards the third region 174. By having the first divider 118, heat dissipated by the set of remote fins 106 residing within the first region 176 is more effectively directed away from the computing device 100.
- a second cooling assembly is thermally coupled to the chipset.
- the second cooling assembly includes a second heat sink 108 for transferring heat from the chipset to surrounding air and a second heat pipe 112 thermally coupled to the chipset to facilitate the transfer of heat from the second heat sink 108 to a another set of remote fins 104 residing within the second region 172.
- the process ends.
- Embodiments describe various technologies, such as different methods and systems, which allow a computing device 100 to be efficiently cooled while it operates under different orientations (e.g., vertical position, horizontal position, mounted position). Moreover, embodiments accomplish this without using a cooling [0086] mechanism that includes moving parts, such as a fan. As a result, an end user is able to position the computing device 100 (e.g., a thin client computer) in different orientations without paralyzing the cooling mechanism. Furthermore, because the cooling mechanism does not utilize moving parts, the computing device 100 benefits from increased reliability and reduced noise level.
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- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP07811409A EP2069878A1 (en) | 2006-08-17 | 2007-08-17 | Methods and systems for cooling a computing device |
CN2007800303977A CN101506755B (en) | 2006-08-17 | 2007-08-17 | Methods and systems for cooling a computing device |
JP2009524693A JP2010501095A (en) | 2006-08-17 | 2007-08-17 | Method and system for cooling a computing device |
BRPI0714473-3A BRPI0714473A2 (en) | 2006-08-17 | 2007-08-17 | computer system |
Applications Claiming Priority (2)
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US11/506,331 | 2006-08-17 | ||
US11/506,331 US20080043425A1 (en) | 2006-08-17 | 2006-08-17 | Methods and systems for cooling a computing device |
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WO2008021504A1 true WO2008021504A1 (en) | 2008-02-21 |
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PCT/US2007/018277 WO2008021504A1 (en) | 2006-08-17 | 2007-08-17 | Methods and systems for cooling a computing device |
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US (1) | US20080043425A1 (en) |
EP (1) | EP2069878A1 (en) |
JP (1) | JP2010501095A (en) |
CN (1) | CN101506755B (en) |
BR (1) | BRPI0714473A2 (en) |
TW (1) | TW200817881A (en) |
WO (1) | WO2008021504A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
EP2069878A1 (en) | 2009-06-17 |
CN101506755A (en) | 2009-08-12 |
BRPI0714473A2 (en) | 2013-04-24 |
US20080043425A1 (en) | 2008-02-21 |
TW200817881A (en) | 2008-04-16 |
JP2010501095A (en) | 2010-01-14 |
CN101506755B (en) | 2012-01-11 |
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