WO2011045866A1 - 電子装置および複合電子装置 - Google Patents
電子装置および複合電子装置 Download PDFInfo
- Publication number
- WO2011045866A1 WO2011045866A1 PCT/JP2009/067933 JP2009067933W WO2011045866A1 WO 2011045866 A1 WO2011045866 A1 WO 2011045866A1 JP 2009067933 W JP2009067933 W JP 2009067933W WO 2011045866 A1 WO2011045866 A1 WO 2011045866A1
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- WIPO (PCT)
- Prior art keywords
- cooling air
- electronic device
- air
- intake
- cooling
- Prior art date
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Classifications
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- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20727—Forced ventilation of a gaseous coolant within server blades for removing heat from heat source
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1406—Reducing the influence of the temperature
- G11B33/1413—Reducing the influence of the temperature by fluid cooling
- G11B33/142—Reducing the influence of the temperature by fluid cooling by air cooling
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20736—Forced ventilation of a gaseous coolant within cabinets for removing heat from server blades
Definitions
- the present invention relates to an electronic device and a composite electronic device.
- ⁇ Components mounted on electronic devices include heat generating components that generate heat during operation. If the temperature of the electronic device rises due to the heat generated by the heat-generating component, it causes a malfunction. For this reason, conventionally, a mechanism for cooling a component has been provided in an electronic device.
- a cooling mechanism of an electronic device there are a liquid cooling method in which a liquid having a temperature lower than that of a heat generating component to be cooled is circulated, and an air cooling method in which cooling air is applied to a component to be cooled.
- cooling air is introduced by providing an opening as close as possible to the heat-generating component in the housing containing the substrate on which the heat-generating component is mounted. This is because the cooling air is locally introduced in the vicinity of the parts to be air-cooled on the substrate to intensively cool the parts to be cooled.
- the cooling air is not always supplied from the front to the casing wall of the electronic device.
- the cooling air When the cooling air is supplied from an oblique direction with respect to the housing wall surface of the electronic device, the cooling air having an opening opened at the center of the electronic component as in the prior art, the cooling air is inclined from the opening. Will enter.
- the cooling air When the cooling air enters obliquely from the opening, the cooling air effectively strikes the region on the leeward side of the heat generating component to be cooled, but the cooling air does not sufficiently strike the region on the leeward side. For this reason, variation occurs in the cooling of the heat generating components, and the efficiency of cooling is reduced.
- the conventional technology has a problem in that the cooling efficiency is lowered when the cooling air is supplied to the wall surface of the casing of the electronic device from an oblique direction.
- the disclosed technology has been made in view of the above, and an electronic device and a composite electronic device that efficiently cool a heat-generating component when cooling air is supplied from an oblique direction with respect to a housing wall surface of the electronic device
- the purpose is to provide.
- the disclosed electronic device and composite electronic device mount a heat-generating component to be air-cooled on a substrate, and are closest to the heat-generating component among the first side plates of the substrate.
- An intake hole is provided at a position shifted from the position in a direction corresponding to the angle of the cooling air.
- the disclosed electronic device and the composite electronic device it is possible to obtain the electronic device and the composite electronic device that efficiently cool the heat-generating component when the cooling air is supplied from an oblique direction with respect to the housing wall surface of the electronic device. There is an effect that can be done.
- FIG. 1 is a horizontal sectional view of a system board which is an electronic apparatus according to the first embodiment.
- FIG. 2A is a perspective view of the housing of the server 100 as seen from the front.
- FIG. 2B is a perspective view of the housing of the server 100 as seen from the back.
- FIG. 2C is a perspective view of the state in which the system board 201 is mounted on the server 100 as viewed from the front.
- FIG. 2D is an explanatory diagram of a state where the top plate 101 is removed from FIG. 2C.
- FIG. 3 is a perspective view of the system board 201 provided with intake holes 61-1 to 61-3 corresponding to the DIMM areas 51-1 to 51-3, respectively.
- FIG. 4 is a schematic configuration diagram of the system board 201.
- FIG. 4 is a schematic configuration diagram of the system board 201.
- FIG. 5 is a top view of the system board 201.
- FIG. 6 is an explanatory diagram of a target portion of the thermal fluid analysis.
- FIG. 7 is an explanatory diagram of the result of the thermal fluid analysis.
- FIG. 8 is an explanatory diagram of DIMMs mounted in the DIMM areas 51-1 to 51-6.
- FIG. 9 is an explanatory diagram of a difference in cooling effect depending on the presence or absence of an intake hole offset.
- FIG. 10 is a configuration diagram of a system board which is an electronic apparatus according to the second embodiment.
- FIG. 11 is an explanatory diagram for comparison with the system board 202 having the duct 71 and the system board 201 having no duct 72.
- FIG. 12 is an explanatory diagram of a system board in which ducts are provided on the exhaust hole side and the intake hole side.
- FIG. 13 is an explanatory diagram of the duct 72 provided with air guide holes.
- FIG. 14 is a cross-sectional view taken along line A-A ′ of the system board 204 shown in FIG. 13.
- FIG. 15 is a cross-sectional view taken along line B-B ′ of the system board 204 shown in FIG. 13.
- FIG. 16 is an explanatory diagram of the system board 201 provided with a duct 72 having no air guide holes.
- FIG. 17 is a cross-sectional view taken along line A-A ′ of the system board 201 shown in FIG. 16.
- FIG. 18 is a cross-sectional view taken along line B-B ′ of the system board 201 shown in FIG. 16.
- FIG. 19 is a diagram showing a specific example of a structure in which an angle is given to one side of the air guide hole.
- FIG. 20 is a diagram illustrating a specific example of a structure in which the air guide holes are provided with angles on both sides.
- FIG. 21 is a configuration diagram of a system board which is an electronic apparatus according to the third embodiment.
- FIG. 22 is an explanatory diagram of a structure in which the fins are angled along the cooling air inflow angle.
- a server device is illustrated as a composite electronic device.
- the server device includes, as an electronic device, a system board on which at least an arithmetic processing device and a storage device are mounted.
- the arithmetic processing unit is represented by, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), and an MCU (Micro Control Unit).
- the storage device is represented by a semiconductor storage device including, for example, a RAM (Random Access Memory) and a ROM (Read Only Memory).
- the disclosed technology is not limited to a server device or a system board, but is a composite that is configured by combining an electronic device mounted with an arithmetic processing device, a storage device, a power supply device, etc., which are electronic components that generate heat, and the electronic device. Widely applicable to electronic devices.
- the disclosed technology can be applied to a communication apparatus represented by an exchange or a router.
- the disclosed technique can be applied to a personal computer on which a motherboard is mounted.
- FIG. 1 is a horizontal sectional view of a system board which is an electronic apparatus according to the first embodiment.
- a DIMM Dual Inline Memory Module
- a power supply board 52 are mounted on a printed circuit board 40.
- the DIMM is a kind of RAM module, in which a highly integrated semiconductor memory element is mounted on both sides of a rectangular plate-like substrate, and is arranged so as to be perpendicular to the printed circuit board 40.
- the DIMMs are heat-generating components that are subject to air cooling with cooling air, and are distributed in the DIMM areas 51-1 to 51-6.
- the system board 201 includes a first side plate 41 having an intake hole 61 for introducing cooling air into the printed circuit board 40 and a second side plate 42 having an exhaust hole 62 for discharging cooling air from the printed circuit board 40.
- the power supply board 52 is arranged at the center of the printed circuit board 40, the DIMM areas 51-1 to 51-3 are arranged on the side plate 41 side, and the DIMM areas 51-4 to 51-6 are arranged on the side plate 42 side.
- An intake hole 61 is provided in the vicinity of the DIMM area 51-2, and an exhaust hole 62 is provided in the vicinity of the DIMM area 51-5.
- the system board 201 is mounted obliquely with respect to the housing of the server 100, which is a composite electronic device.
- the server 100 includes an intake duct area DA1 for supplying cooling air to the intake holes 61 provided in the side plate 41 of the system board 201 and cooling air discharged from the exhaust holes from the exhaust holes 62 of the side plate 42 of the system board 201.
- the server 100 includes a cooling device 113 between the exhaust hole 62 provided in the side plate 42 and the exhaust duct area DA3.
- the cooling device 113 is a fan that forms cooling air by rotation.
- An intermediate duct area DA2 is formed between the exhaust hole 62 and the cooling device 113.
- the intake duct area DA1 supplies cooling air to the intake holes 61 at a predetermined angle that is greater than 0 degree and less than 90 degrees.
- the system board 201 has an intake hole 61 at a position on the side plate 41 that is shifted from the position closest to the DIMM area 51-2 to the intake duct side.
- the cooling wind is offset from the cooling wind guided from the diagonally forward side of the printed circuit board 40 to be cooled by offsetting the opening position of the intake hole 61 in the direction of the wind instead of the center of the electronic component group to be cooled.
- the electronic component can be uniformly hit and can be efficiently cooled.
- FIG. 2A is a perspective view of the housing of the server 100 as seen from the front.
- FIG. 2B is a perspective view of the housing of the server 100 as seen from the back.
- FIG. 2A shows a state in which the front plate, which is an openable and closable door body arranged on the front surface of the server 100, is released, and the illustration of the front plate is omitted.
- illustration of the back plate is omitted.
- the server 100 includes a top plate 101, a bottom plate 102, a first side plate 103, a second side plate 104, a shelf 108a, and a shelf 108b.
- the bottom plate 102 is arranged so as to be parallel to the installation surface of the server 100.
- the bottom plate 102 is provided with casters 106 used for moving the server 100 and legs 107 used for fixing the server 100.
- the first side plate 103 and the second side plate 104 are arranged perpendicular to the bottom plate 102.
- the top plate 101 is arranged perpendicular to the first side plate 103 and the second side plate 104, that is, parallel to the bottom plate 102.
- the server 100 has a front plate (not shown) and a back plate (not shown) arranged to face the front plate.
- the front plate is an openable / closable door disposed so as to close a rectangular opening formed on the front surface of the server 100 by the top plate 101, the bottom plate 102, the first side plate 103, and the second side plate 104.
- the back plate is a member arranged so as to close a rectangular opening formed on the back surface of the server 100 by the top plate 101, the bottom plate 102, the first side plate 103, and the second side plate 104. is there.
- the server 100 includes a shelf 108a and a shelf 108b in a space defined by the first side plate 103 and the second side plate 104.
- the system board 201 is disposed on the shelf 108a and the shelf 108b.
- the shelf 108a includes a guide panel 109a having guide rails arranged in parallel.
- the shelf 108b includes a guide panel 109b having the same number of guide rails arranged in parallel.
- the guide panel 109a and the guide panel 109b are arranged perpendicular to the bottom plate 102 with the bottom side of the guide panel and the horizontal position of each guide rail being coincident.
- the shelf 108a and the shelf 108b are arranged such that the guide panel 109a and the guide panel 109b have an angle of ⁇ ° (0 ° ⁇ ⁇ 90 °) in the horizontal direction with respect to the first side plate 103. Be placed. Then, by arranging the system boards 201 on the plurality of guide rails facing each other, the plurality of system boards 201 can be arranged in layers on the shelf 108a and the shelf 108b.
- an intake duct opening is provided in a space defined by the shelf 108 a and the first side plate 103 on the front surface of the server 100.
- an intake duct opening is provided in a space defined by the shelf 108 b and the first side plate 103 on the front surface of the server 100.
- the power supply device 110 and the shelf 111 are arranged side by side between the shelf 108a and the shelf 108b.
- the power supply device 110 is disposed on the first side plate 103 side
- the shelf 111 is disposed on the second side plate 104 side.
- the power supply device 110 is a plurality of printed boards on which electronic components are mounted, and controls the power supply of the electronic devices arranged in the server 100.
- the shelf 111 includes a guide panel 112 having guide rails arranged in parallel. By arranging the interface boards on the guide rails of the guide panel 112, the interface boards can be arranged in layers on the shelf 111.
- the server 100 includes a connection board 114 called a backplane on the back of the shelf 108a and the shelf 108b.
- the connection substrate 114 is disposed so as to be perpendicular to the guide panel 109a.
- the connection substrate 114 is arranged on the back surface of the shelf 108a and the shelf 108b so as to close a rectangular opening formed including the guide panel 109.
- connection board 114 electrically connects the system boards 201 arranged on the shelves 108a and 108b.
- the connection terminals provided on the back surfaces of the plurality of system boards are connected to the connection board 114, whereby the system board 201 is electrically connected.
- the connection board 114 is the first side plate. It is arranged so as to have an angle of 90 ° + ⁇ ° in the horizontal direction with respect to 103.
- an exhaust duct opening is provided in a space defined by the second side plate 104 and the guide panels 109a and 109b.
- a cooling device 113 is disposed in a space formed between the second side plate 104 and the guide panels 109a and 109b.
- the cooling device 113 is formed by arranging a plurality of fans having the same configuration vertically and horizontally.
- the fan is an axial fan.
- the cooling device 113 is arranged to have a second angle ⁇ ° (0 ° ⁇ ⁇ ⁇ 90 °) with respect to the first side plate 103.
- a cooling device 116 and a connection board 117 are arranged side by side on the back surface of the shelf 111 of the server 100.
- the cooling device 116 cools electronic components mounted on a plurality of interface boards arranged on the shelf 111.
- the connection board 117 is a backplane that electrically connects a plurality of interface boards arranged on the shelf 111.
- the power supply device 110 is disposed between the connection substrate 117 and the first side plate 103.
- FIG. 2C is a perspective view of a state in which the system board 201 is mounted on the server 100 as viewed from the front.
- a plurality of system boards 201 are arranged on a shelf 108 a arranged in a space formed by the top plate 101, the first side plate 103, and the second side plate 104.
- the system boards 201 are arranged such that the front surfaces are aligned on the same surface. Note that the system board 201 is arranged in the shelf 108b as well as the shelf 108a.
- FIG. 2D is an explanatory diagram showing a state in which the top plate 101 is removed from FIG. 2C.
- the system board 201 arranged on the shelf 108 a is arranged such that the side plate 41 has an angle in the horizontal direction with respect to the first side plate 103, and is connected to the connection board 114.
- a space defined by the first side plate 103 and the guide panel 109a of the shelf 108a is an intake duct area DA1.
- An intake duct opening is provided in the front portion of the server 100 in the intake duct area DA1.
- the 2D is arranged in the space defined by the shelf 108a and the second side plate 104 so as to have an angle of ⁇ ° in the horizontal direction with respect to the first side plate 103.
- the A space defined by the shelf 108a, the guide panel 109a of the shelf 108a, and the cooling device 113 is an intermediate duct area DA2.
- the space defined by the cooling device 113 and the second side plate 104 shown in FIG. 2D is an exhaust duct area DA3.
- An exhaust duct opening is provided in the back surface portion of the server 100 in the exhaust duct area DA3.
- the cooling air sucked into the server 100 from the intake duct opening changes the flow direction toward the system boat 201 in the intake duct area DA1. Then, the air that has changed the flow direction to the system board 201 cools and passes through the inside of the system board 201.
- the cooling air that has passed through the system board 201 changes the flow direction toward the cooling device 113 in the intermediate duct area DA2.
- the air whose flow direction has been changed to the cooling device 113 passes through the cooling device 113 and is then discharged from the opening of the exhaust duct to the outside of the server 100 via the exhaust duct area DA3.
- FIG. 1 shows an example in which an intake hole 61 is provided in the vicinity of the DIMM area 51-2 and an exhaust hole 62 is provided in the vicinity of the DIMM area 51-5 to simplify the description.
- FIG. 3 is a perspective view of the system board 201 provided with intake holes 61-1 to 61-3 corresponding to the DIMM areas 51-1 to 51-3, respectively. As already described, the cooling air enters from the front side of the side plate 41 of the system board 201.
- FIG. 4 is a schematic configuration diagram of the system board 201
- FIG. 5 is a top view of the system board 201.
- Electronic components such as an arithmetic element 53, a communication element 54, and a power supply board 52 are mounted on the printed board 40 of the system board 201 by soldering.
- a connector 44 is mounted on one side of the printed circuit board 40 to be connected to the connection board 114 and to be electrically connected to another board and to supply power.
- the side plates 41 and 42 are sheet metals that reinforce and protect the printed circuit board 40 and are attached by a method such as screwing.
- a liquid cooling method is adopted to cool some electronic components.
- the light is emitted from the arithmetic element 53 and the communication element 54.
- a water cooling jacket 81 for cooling the heat is attached.
- the water cooling jacket 81 is a cold water pipe that is in close contact with each element and allows a liquid refrigerant to flow between the water cooling jackets 81.
- the water cooling jackets 81 are connected by cold water piping.
- the side plate 41 on the intake side has an intake hole 61-1 corresponding to the DIMM area 51-1, an intake hole 61-2 corresponding to the DIMM area 51-2, and an intake hole 61-3 corresponding to the DIMM area 51-3. .
- the intake holes 61-1 to 61-3 are offset from the front surface of the DIMM area, that is, the position closest to the DIMM area, to the front surface side of the system board 201, that is, to the upstream side of the cooling air.
- the exhaust side plate 42 has an exhaust hole 62-1 corresponding to the DIMM area 51-4, an exhaust hole 62-2 corresponding to the DIMM area 51-5, and an exhaust hole 62-3 corresponding to the DIMM area 51-6. .
- the exhaust holes 62-1 to 62-3 are provided without offset at the front of the DIMM area, that is, at a position closest to the DIMM area.
- FIG. 5 shows a system board 201 in which the air intake holes are offset and a system board 200 which is provided in the front of the DIMM area without offsetting the air intake holes, that is, the position closest to the DIMM area. Are comparing.
- the intake holes 61-1a to 61-3a of the system board 200 Comparing the positions of the intake holes 61-1a to 61-3a of the system board 200 as a comparative example with the positions of the intake holes 61-1 to 61-3 of the system board 201, the intake holes 61-1 to 61-3 are compared. Is shifted to the front side of the system board 201. Therefore, the intake holes 61-1 to 61-3 are not opposed to the front surface of the DIMM, which is a heat generating component to be cooled, as viewed from the side plate 41, but are shifted in the direction in which the cooling air is sucked, that is, offset. Position.
- FIG. 6 is an explanatory diagram of a target portion of the thermal fluid analysis.
- a region surrounded by a broken line in FIG. 6 is an object of thermal fluid analysis.
- the DIMM areas 51-1 to 51-6 and the power supply board 52 are the targets of the thermal fluid analysis.
- the cooling air was sucked in from diagonally forward, passed through the printed circuit board 40, and thermal fluid analysis was performed with a model flowing in the diagonally back direction.
- FIG. 7 is an explanatory diagram of the results of thermal fluid analysis.
- the flow of the cooling air is illustrated as a line.
- a part of the cooling air flowing to the DIMM area 51-2 flows in the direction of the DIMM area 5-1, and the DIMM area 51 -2 cannot be used effectively for cooling.
- FIG. 8 is an explanatory diagram of DIMMs mounted in the DIMM areas 51-1 to 51-6.
- the DIMM area 51-1 four DIMMs 1 to 4 are mounted.
- the DIMM area 51-2 eight DIMMs 5 to 12 are mounted.
- the DIMM area 51-3 four DIMMs 13 to 16 are mounted.
- four DIMMs 17 to 20 are mounted in the DIMM area 51-4.
- the DIMM area 51-5 eight DIMMs 21 to 28 are mounted.
- four DIMMs 29 to 32 are mounted.
- FIG. 9 is an explanatory diagram of the difference in cooling effect depending on the presence or absence of the offset of the intake holes.
- FIG. 9 compares the temperatures of the DIMMs 1 to 32 between the system board 201 in which the position of the intake holes is offset and the system board 200 in which the position of the intake holes is not offset.
- the temperature variation ( ⁇ T) between all the DIMMs mounted on the system board 200 is 20 ° C.
- the temperature variation between all the DIMMs mounted on the system board 201 is 16 ° C. From this result, it can be seen that the temperature variation can be reduced by the offset of the intake holes.
- the server 100 and the system board 201 shown in the first embodiment are offset in the direction of the cooling air from the front of the heat generating component when guiding the cooling air to the printed circuit board on which the heat generating component is mounted. Use the air intake holes opened.
- the server 100 and the system board 201 can efficiently cool the heat-generating components when the cooling air is supplied from an oblique direction to the side plate that is the wall surface of the system board 201.
- FIG. 10 is a configuration diagram of a system board which is an electronic apparatus according to the second embodiment.
- the system board 202 shown in FIG. 10 has ducts 71 in the vicinity of the exhaust holes 62-1 to 61-3.
- a duct 72 having air guide holes is provided on the power supply substrate 52, that is, between the DIMM areas 51-1 to 51-3 and the DIMM areas 51-4 to 51-6. Since other configurations are the same as those of the system board 201 shown in the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.
- the system board 202 includes both the duct 71 and the duct 72, but may include only one of the duct 71 and the duct 72.
- the duct 71 will be described.
- FIG. 11 is an explanatory diagram for comparison with the system board 202 having the duct 71 and the system board 201 not having the duct 72.
- the system board 202 has a structure in which a duct 71 is installed on the downstream side of the cooling air, that is, on the exhaust hole side.
- the duct 71 is provided with walls along the arrangement of the DIMM areas 51-4 to 51-6 so that the cooling air flows in a concentrated manner in the DIMM areas 51-4 to 51-6 on the downstream side.
- the positions corresponding to the exhaust port sides other than the areas 51-4 to 51-6 are closed.
- the cooling air flowing on the leeward side of the printed circuit board 40 is concentrated in the DIMM areas 51-4 to 51-6 by the duct 71, so that the leeward DIMM having a higher temperature than the windward side can be efficiently cooled.
- FIG. 12 is an explanatory diagram of a system board provided with ducts on the exhaust hole side and the intake hole side.
- the system board 203 shown in FIG. 12 is provided with a duct 73 on the leeward side of the DIMM area 51-1 and the DIMM area 51-3.
- the cooling air introduced in the oblique direction to the system board 203 strikes the duct 73 and changes its direction to cool the DIMM, thereby improving the cooling effect.
- FIG. 13 is an explanatory diagram of the duct 72 provided with air guide holes.
- 14 is a cross-sectional view taken along the line A-A 'of the system board 204 shown in FIG. 13, and
- FIG. 15 is a cross-sectional view taken along the line B-B' of the system board 204 shown in FIG.
- the system board 204 shown in FIGS. 13 to 15 includes a duct 72 for cooling the power supply board 52 between the leeward DIMM areas 51-1 to 51-3 and the leeward DIMM areas 51-4 to 51-6. Provided. An air guide hole 74 which is a local tunnel is provided near the center of the DIMM areas 51-4 and 51-5 of the duct 72. This air guide hole 74 makes it possible to supply cooling air that is not affected by the exhaust heat of the power supply substrate 52 to the DIMM area on the leeward side.
- FIG. 16 is an explanatory diagram of the system board 201 provided with a duct 72 having no air guide holes. 17 is a cross-sectional view taken along the line A-A ′ of the system board 201 shown in FIG. 16, and FIG. 18 is a cross-sectional view taken along the line B-B ′ of the system board 201 shown in FIG. 16.
- the cooling air is supplied to the downstream DIMM area through the vicinity of the power supply substrate 52. For this reason, the temperature of the cooling air rises due to the influence of the exhaust heat of the power supply substrate 52.
- 19 and 20 are specific examples of structures in which the air guide holes are provided with an angle (taper).
- the opening on the intake side is made larger than the opening on the exhaust side.
- an angle is given to one side of the air guide hole. It is preferable that this angle is set on the windward side in accordance with the direction of the cooling air.
- the air guide hole 76 shown in FIG. 20 is the same as the air guide hole 75 in that the opening on the intake side is larger than the opening on the exhaust side. Is given. For this reason, it is possible to collect cooling air from the entire corresponding DIMM area and supply it to the exhaust side.
- the opening on the intake side is made larger than the opening on the exhaust side, thereby increasing the flow rate of the cooling air supplied to the exhaust side and improving the cooling efficiency. be able to.
- the system board 202 shown in the second embodiment is provided with the duct 71 functioning as a rectifying plate for cooling air in the vicinity of the electronic components in the lee.
- the duct 71 can reduce the temperature rise of the exhaust-side electronic components that tend to be hotter than the intake side, and the electronic components mounted on the system board 202 can be cooled uniformly and efficiently.
- the system board 202 shown in the second embodiment is provided with a duct 73 that functions as a rectifying plate for cooling air in the vicinity of the electronic component on the windward side.
- the cooling air on the intake side can be controlled by this duct 73, so that the temperature rise of the electronic components on the exhaust side can be reduced, and the electronic components mounted on the system board 203 can be uniformly and efficiently cooled. It becomes.
- system board 202 shown in the second embodiment is located at a midpoint between the leeward side and the leeward side with respect to the leeward side electronic component that is relatively hot due to the temperature rise of the electronic component on the leeward side.
- the flow of cooling air is increased by narrowing down the cooling air. For this reason, even when the cooling air whose temperature has been increased due to the heat generated by the electronic component on the leeward side hits the electronic component on the leeward side, a larger amount of heat generated by the electronic component on the leeward side can be removed. .
- FIG. 21 is a configuration diagram of a system board which is an electronic apparatus according to the third embodiment.
- the system board 204 shown in FIG. 21 has a structure in which fins 82 are installed in a water cooling jacket 81 and a water cooling pipe. Since other configurations are the same as those of the system boards 201 to 203 shown in the first and second embodiments, the same components are denoted by the same reference numerals and description thereof is omitted.
- the temperature of the water cooling jacket 81 and the water cooling piping is lower than that of the DIMM. For this reason, in the system board 204, the cooling air introduced from the intake holes hits the fins 82 and is cooled. For this reason, the cooling air can efficiently cool the DIMM.
- FIG. 22 is an explanatory diagram of a structure in which the fins are angled along the cooling air inflow angle.
- the fin 83 has an angle along the cooling air inflow angle. For this reason, it is possible to suppress a decrease in the flow velocity of the cooling air when the cooling air hits the fins 83, and to cool the DIMM with high-speed and low-temperature cooling air.
- the system boards 204 and 205 shown in the third embodiment have the leeward electronic components compared to the leeward electronic components that are relatively hot under the influence of the temperature rise of the electronic components on the leeward side.
- a cooling margin is provided in the water cooling jacket 81 that is a cooling structure component installed upstream from the component, and the cooling structure component is allowed to pass through the inflowing cooling air to lower the temperature of the cooling air.
- the cooling air at a lower temperature is applied to the electronic components downstream of the water cooling jacket or cooling water piping to improve the cooling efficiency of the parts subject to air cooling. can do.
- the disclosed electronic device and the composite electronic device by offsetting the inlet of the cooling air, the inflow of the cooling air is smoothed and efficiently applied to the electronic component to be cooled, It becomes possible to apply cooling air more uniformly.
- the effect of air cooling can be further improved and efficient cooling can be achieved.
- Examples 1 to 3 are merely examples, and the disclosed technology can be modified as appropriate.
- the offset amount of the intake hole is fixed.
- the offset amount of the intake hole may be changed by providing a window member that slides in the intake hole.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
41,42 側板
43 天板
44 コネクタ
51-1~6 DIMMエリア
52 電源基板
53 演算素子
54 通信素子
61,61-1~3,61-1a~3a 吸気孔
62,62-1~3 排気孔
71~73 ダクト
74~76 導風孔
81 水冷ジャケット
82,83 フィン
100 サーバ
101 天板
102 底板
103 側面板
104 側面板
106 キャスター
107 脚部
108a,108b,111 棚
109a,109b,112 ガイドパネル
110 電源装置
113,116 冷却装置
114,117 接続基板
200~205 システムボード
DA1 吸気ダクトエリア
DA3 排気ダクトエリア
Claims (12)
- 冷却風による空冷の対象となる発熱部品を実装した基板と、
前記基板に前記冷却風を導入する吸気孔を有する第1の側板と、
前記基板から前記冷却風を排出する排気孔を有する第2の側板とを備え、
前記第1の側板は、前記発熱部品に最も近い位置からずれた位置に前記吸気孔を有し、前記吸気孔の位置のずれの方向は、吸気時における冷却風の前記第1の側板に対する角度に対応することを特徴とする電子装置。 - 前記発熱部品を前記基板上の複数の領域に分散して配置し、前記複数の領域のうち前記第1の側板側に設けられた領域に対応して吸気孔を複数備えたことを特徴とする請求項1に記載の電子装置。
- 前記吸気孔と前記排気孔のうち、すくなくとも前記排気孔に前記冷却風を整流するダクトをさらに備えたことを特徴とする請求項1に記載の電子装置。
- 前記基板の前記吸気孔側の前記冷却風を集約して前記排気孔側に供給する導風部材をさらに備えたことを特徴とする請求項1に記載の電子装置。
- 前記発熱部品に比して低温の部品に前記冷却風を接触させるフィンをさらに備えたことを特徴とする請求項1に記載の電子装置。
- 前記フィンは、前記吸気時における冷却風の前記第1の側板に対する角度に対応する角度を有することを特徴とする請求項5に記載の電子装置。
- 冷却風による空冷の対象となる発熱部品を実装した基板を有する1または複数の電子装置と、
前記電子装置の第1の側面に設けられた吸気孔に対し、0度より大きく90度より小さい所定の角度で冷却風を供給する吸気ダクトと、
前記電子装置の第2の側面に設けられた排気孔から排出された冷却風を排気する排気ダクトと、
前記電子装置と前記吸気ダクトの間と前記電子装置と前記排気ダクトの間のうち少なくとも一方に設けられ、前記冷却風を形成する冷却装置とを備え、
前記電子装置は、第1の側面のうち、前記発熱部品に最も近い位置から前記吸気ダクト側にずれた位置に前記吸気孔を有することを特徴とする複合電子装置。 - 前記発熱部品を前記基板上の複数の領域に分散して配置し、前記複数の領域のうち前記第1の側板側に設けられた領域に対応して吸気孔を複数備えたことを特徴とする請求項7に記載の複合電子装置。
- 前記吸気孔と前記排気孔のうち、すくなくとも前記排気孔に前記冷却風を整流するダクトをさらに備えたことを特徴とする請求項7に記載の複合電子装置。
- 前記基板の前記吸気孔側の前記冷却風を集約して前記排気孔側に供給する導風部材をさらに備えたことを特徴とする請求項7に記載の複合電子装置。
- 前記発熱部品に比して低温の部品に前記冷却風を接触させるフィンをさらに備えたことを特徴とする請求項7に記載の複合電子装置。
- 前記フィンは、前記吸気時における冷却風の前記所定の角度に対応する角度を有することを特徴とする請求項11に記載の複合電子装置。
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KR1020127009455A KR101437497B1 (ko) | 2009-10-16 | 2009-10-16 | 전자 장치 및 복합 전자 장치 |
EP09850408.7A EP2490518A4 (en) | 2009-10-16 | 2009-10-16 | ELECTRONIC DEVICE AND COMPOSITE ELECTRONIC DEVICE |
CN2009801619603A CN102577652A (zh) | 2009-10-16 | 2009-10-16 | 电子装置及复合电子装置 |
PCT/JP2009/067933 WO2011045866A1 (ja) | 2009-10-16 | 2009-10-16 | 電子装置および複合電子装置 |
JP2011543915A JP5360228B2 (ja) | 2009-10-16 | 2009-10-16 | 電子装置および複合電子装置 |
US13/447,515 US8817470B2 (en) | 2009-10-16 | 2012-04-16 | Electronic device and complex electronic device |
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Also Published As
Publication number | Publication date |
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EP2490518A4 (en) | 2014-06-11 |
JPWO2011045866A1 (ja) | 2013-03-04 |
CN102577652A (zh) | 2012-07-11 |
KR101437497B1 (ko) | 2014-09-03 |
KR20120053077A (ko) | 2012-05-24 |
US8817470B2 (en) | 2014-08-26 |
JP5360228B2 (ja) | 2013-12-04 |
EP2490518A1 (en) | 2012-08-22 |
US20120201001A1 (en) | 2012-08-09 |
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