WO2010049727A1 - Equipment case - Google Patents
Equipment case Download PDFInfo
- Publication number
- WO2010049727A1 WO2010049727A1 PCT/GB2009/051443 GB2009051443W WO2010049727A1 WO 2010049727 A1 WO2010049727 A1 WO 2010049727A1 GB 2009051443 W GB2009051443 W GB 2009051443W WO 2010049727 A1 WO2010049727 A1 WO 2010049727A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing unit
- equipment
- case
- fan
- cooling system
- Prior art date
Links
Classifications
-
- 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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/202—Air circulating in closed loop within enclosure wherein heat is removed through heat-exchangers
Definitions
- the present invention relates to the field of equipment cases, in particular, to controlling the environment within such an equipment case.
- a conventional equipment case, housing and thereby protecting equipment such as a battlefield communications system comprises a box having openings therein through which air can pass.
- convection within the box is enhanced and cooling of the equipment is effected.
- Filters are placed in the openings to prevent (or at least inhibit) ingress of dust and/or fluid therethrough.
- the present invention provides a field equipment case comprising: a sealed housing unit configured to receive an item of equipment; and cooling means associated with the housing unit for maintaining an operational thermal environment within the equipment case.
- the cooling system may be directly connected to the housing unit or it may be spaced from the housing unit but in fluid communication therewith.
- the cooling system may comprise a first fan, mounted within the housing unit, and a second fan, mounted external to the housing unit.
- the first fan may be an axial fan.
- the second fan may be a centrifugal fan.
- the cooling system may comprise a forced flow heat exchanger and it may be configured to establish a counter current thermal exchange mechanism between an internal fluid and an external fluid.
- Figure 2 represents a cross section of Figure 1 on X-X, illustrating a cooling system
- Figure 3 illustrates a part of the cooling system internal to the equipment case
- Figure 4 illustrates a part of the cooling system external to the equipment case
- Figure 5 illustrates a comparison between a parallel flow and a counter flow thermal transfer system
- Figure 6 illustrates a cross section, similar to that shown in Figure 2, of an alternative equipment case.
- Figure 1 illustrates an equipment case 10.
- the dimensions of the case 10 are selected to accommodate a chosen type and model of equipment within the envelope described thereby.
- a housing unit 20 of the equipment case 10 defines a sealed cavity 25 for accommodating electronic equipment (not shown).
- Such an arrangement serves to inhibit the ingress of fluid and dust or other particulate matter into the equipment case 10 which could, potentially, damage the equipment protected thereby.
- the case is sealed to the extent that it is considered to be dust and weather proof to an IP rating of 65.
- the unit is "totally protected from dust” and “protected from low pressure jets of water from all directions”.
- the internal thermal conditions of the equipment case 10 may be elevated.
- Equipment contained within the case 10 also, generally, generates heat and further contributes to the elevation of the internal temperatures.
- the equipment case 10 is designed to minimise transmission of shock and vibrations experienced by the case 10 to equipment accommodated therewithin.
- the equipment may be mounted within a frame, whereby the frame itself is connected to the housing unit 20 via shock suppression mounting brackets. Conduction of heat from the equipment to the housing unit 20 is, consequently minimal.
- Electronic equipment installed within an equipment case 10 is, generally, both a source of and is susceptible to electromagnetic interference (EMI).
- EMI electromagnetic interference
- Figure 2 illustrates a cross section of the equipment case through line X-X such that a plan view of the case 10, as illustrated in Figure 1 , is presented.
- the equipment case 10 comprises a housing unit 20 coupled to a cooling system 30.
- the cooling system 30 comprises a number of components mounted on a wall 40 of the housing unit 20.
- An interior surface 45 of wall 40 namely that located inside the housing unit 20 of equipment case 10, is illustrated in Figure 3.
- An axial fan 50 is mounted on surface 45 together with a number of internal heat sinks 55.
- two internal heat sinks 55 are provided.
- the axial fan 50 is mounted centrally, between the two internal heat sinks 55 and is configured to draw air through the heat sinks 55 before redirecting the air stream into the cavity 25 of the equipment case 10.
- an exterior surface 60 of wall 40 is presented.
- External heat sinks 65 are mounted on surface 60.
- the location of these external heat sinks 65 correspond to the internal heat sinks 55 mounted on internal surface 45.
- Wall 40 comprises a thermally conductive material such as a metal, to ensure that each external heat sink 65 is in thermal communication with a respective heat sink 55 located across the wall 40.
- the wall 40 is made from aluminium, or an aluminium alloy, however other metals comprising copper or stainless steel may be used.
- the internal heat sinks 55 may achieve thermal communication with the corresponding external heat sinks 65 by using heat pipes or by direct contact with one another through an aperture formed in the wall 40.
- the housing 20 comprising the wall 40 is made from a material heaving low thermal conductivity, e.g. carbon or glass fibre composite materials, a thermally conductive insert may be used locally between the internal and external heat sinks 55, 65 to provide a low resistance thermal path therebetween.
- centrifugal fans 70 are also located on the exterior surface 60.
- Each centrifugal fan 70 is oriented such that ambient air drawn from the external environment is forced through the external heat sinks 65 as depicted in Figure 2 by the dotted arrows.
- an air to air heat exchanger is provided.
- one or more axial fans could replace the centrifugal fans 70.
- FIG. 5 illustrates the heat transfer mechanism in more detail.
- Figure 5b illustrates the counter current thermal exchange mechanism, whereby a more consistent thermal difference and, therefore thermal gradient, is achieved across the extent of the heat sinks 55, 65.
- the coolest part Ti 2 of the internal side 45 may reduce below the temperature T E2 of the hottest part of the external side 60. Consequently, a more efficient and greater level of heat transfer can be achieved.
- the internal and external heat sinks 55, 65 are located adjacent one another in direct thermal communication.
- the heat sinks 55, 65 could be spaced from one another and joined together using heat pipes.
- the heat sinks 55, 65 comprise lightweight compact heat exchange surfaces having a high surface area to volume ratio.
- Pin fins may be used as illustrated however, straight fins or foil fins are also appropriated and may be used.
- a metal, foam or other conductive material having a sufficiently large surface area to volume ratio could be used.
- a cover plate is provided over each respective heat sink 55, 65 so that fluid drawn or forced through the, or each, heat sink 55, 65 is constrained.
- the equipment case 10' may comprise a housing unit 20' spaced from a cooling system 30' but in fluid and, therefore, thermal communication therewith.
- the cooling system 30' is spaced from the housing unit 20' connected thereto via ducts 80.
- the cooling system 30' may be located on any face of the housing unit 20' as may prove convenient and the ducts 80 are configured accordingly.
- thermally coupled internal and external forced flow heat exchangers are provided, whereby integrated fans provide forced convection cooling to internal equipment accommodated within a housing unit of the equipment case 10.
- the orientation of the equipment case becomes inconsequential as the cooling mechanism is unaffected thereby, unlike for natural convection.
- the use of a counter flow exchange mechanism enhances performance such that operating conditions can be achieved for the electronic equipment even in particularly demanding thermal environments exceeding 40 0 C.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09744437A EP2345315A1 (en) | 2008-10-27 | 2009-10-27 | Equipment case |
AU2009309433A AU2009309433A1 (en) | 2008-10-27 | 2009-10-27 | Equipment case |
US13/126,291 US20110203770A1 (en) | 2008-10-27 | 2009-10-27 | Equipment case |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0819692A GB0819692D0 (en) | 2008-10-27 | 2008-10-27 | Equipment case |
GB0819692.5 | 2008-10-27 | ||
EP08253484.3 | 2008-10-27 | ||
EP08253484A EP2180775A1 (en) | 2008-10-27 | 2008-10-27 | Equipment case |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010049727A1 true WO2010049727A1 (en) | 2010-05-06 |
Family
ID=42128310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2009/051443 WO2010049727A1 (en) | 2008-10-27 | 2009-10-27 | Equipment case |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110203770A1 (en) |
EP (1) | EP2345315A1 (en) |
AU (1) | AU2009309433A1 (en) |
WO (1) | WO2010049727A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012110001A1 (en) * | 2012-10-19 | 2014-04-24 | R.Stahl Schaltgeräte GmbH | Explosion-proof housing with a fan |
EP4075933A1 (en) * | 2021-04-14 | 2022-10-19 | Siemens Aktiengesellschaft | Heat exchanger assembly |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2685798B1 (en) | 2012-07-11 | 2019-02-13 | ABB Schweiz AG | An electrical room of an industrial equipment such as a container crane, the electrical room comprising a cooling device |
US9545037B2 (en) * | 2014-01-24 | 2017-01-10 | Baker Hughes Incorporated | Systems and methods for cooling electric drives |
US10028414B2 (en) * | 2014-06-24 | 2018-07-17 | Vertiv Energy Systems, Inc. | Passive cooling features for electronics equipment cabinets |
CN106256176B (en) * | 2015-04-03 | 2017-12-05 | 三菱电机株式会社 | Electronic equipment |
DE102017104007A1 (en) * | 2017-02-27 | 2018-08-30 | Krohne Messtechnik Gmbh | Device for receiving electronics |
CN207099513U (en) * | 2017-09-05 | 2018-03-13 | 陈庆洪 | A kind of good degree of protection of heat sinking function is up to 65 grades and the electric cabinet of the above |
US11240932B1 (en) * | 2018-07-27 | 2022-02-01 | Waymo Llc | Cold plate |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6233291A (en) * | 1985-08-06 | 1987-02-13 | Mitsubishi Electric Corp | Cooling device for hermetically closed box |
US5657641A (en) * | 1995-09-13 | 1997-08-19 | Kooltronic, Inc. | Panel mounted cooling system |
DE202004006821U1 (en) * | 2004-03-15 | 2004-07-22 | Pfannenberg Gmbh | Cooling device for electrical cabinet for explosive environments, has welded sealed housing containing components not certified for explosive environments, and second housing for certified components |
US20050061485A1 (en) * | 2002-07-09 | 2005-03-24 | Kazuo Hirafuji | Heat exchanger |
EP1951020A1 (en) * | 2007-01-26 | 2008-07-30 | ISL media Singapore PTE LTD | Casing to install electric or electronic instruments |
WO2008111310A1 (en) * | 2007-03-13 | 2008-09-18 | Panasonic Corporation | Cooling device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4807441A (en) * | 1987-07-17 | 1989-02-28 | Allied-Signal Inc. | Cooling system for a sealed enclosure |
US5603376A (en) * | 1994-08-31 | 1997-02-18 | Fujitsu Network Communications, Inc. | Heat exchanger for electronics cabinet |
JP4200563B2 (en) * | 1998-11-19 | 2008-12-24 | 株式会社デンソー | Cooling system |
US20040000390A1 (en) * | 2002-07-01 | 2004-01-01 | Stadjuhar Robert Charles | Outdoor electronic sign enclosure |
EP2565550B1 (en) * | 2011-09-01 | 2018-10-10 | LG Electronics Inc. | Ventilation apparatus |
-
2009
- 2009-10-27 US US13/126,291 patent/US20110203770A1/en not_active Abandoned
- 2009-10-27 AU AU2009309433A patent/AU2009309433A1/en not_active Abandoned
- 2009-10-27 WO PCT/GB2009/051443 patent/WO2010049727A1/en active Application Filing
- 2009-10-27 EP EP09744437A patent/EP2345315A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6233291A (en) * | 1985-08-06 | 1987-02-13 | Mitsubishi Electric Corp | Cooling device for hermetically closed box |
US5657641A (en) * | 1995-09-13 | 1997-08-19 | Kooltronic, Inc. | Panel mounted cooling system |
US20050061485A1 (en) * | 2002-07-09 | 2005-03-24 | Kazuo Hirafuji | Heat exchanger |
DE202004006821U1 (en) * | 2004-03-15 | 2004-07-22 | Pfannenberg Gmbh | Cooling device for electrical cabinet for explosive environments, has welded sealed housing containing components not certified for explosive environments, and second housing for certified components |
EP1951020A1 (en) * | 2007-01-26 | 2008-07-30 | ISL media Singapore PTE LTD | Casing to install electric or electronic instruments |
WO2008111310A1 (en) * | 2007-03-13 | 2008-09-18 | Panasonic Corporation | Cooling device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012110001A1 (en) * | 2012-10-19 | 2014-04-24 | R.Stahl Schaltgeräte GmbH | Explosion-proof housing with a fan |
EP4075933A1 (en) * | 2021-04-14 | 2022-10-19 | Siemens Aktiengesellschaft | Heat exchanger assembly |
Also Published As
Publication number | Publication date |
---|---|
EP2345315A1 (en) | 2011-07-20 |
AU2009309433A1 (en) | 2010-05-06 |
US20110203770A1 (en) | 2011-08-25 |
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