US20090032218A1 - Apparatus for transferring between two heat conducting surfaces - Google Patents
Apparatus for transferring between two heat conducting surfaces Download PDFInfo
- Publication number
- US20090032218A1 US20090032218A1 US11/831,603 US83160307A US2009032218A1 US 20090032218 A1 US20090032218 A1 US 20090032218A1 US 83160307 A US83160307 A US 83160307A US 2009032218 A1 US2009032218 A1 US 2009032218A1
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- United States
- Prior art keywords
- sheet
- thermal material
- thermal
- support plate
- heat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
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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
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
- H05K7/20445—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing the coupling element being an additional piece, e.g. thermal standoff
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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
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
- H05K7/2049—Pressing means used to urge contact, e.g. springs
Definitions
- a heat sink is coupled to the device.
- the heat sink is generally sized according to the amount of heat that the device will be dissipating. In many cases, however, space around the device generating heat is limited. Generally, however, there are other heat sinks or possible heat dissipating materials near the heat sink. Each of these additional heat sinks may not be coupled to a device generating the same amount of heat, and may have extra cooling capacity.
- the apparatus includes a first support plate, a sheet of thermal material adjacent the first support plate, and a second support plate adjacent the sheet of thermal material, wherein the sheet of thermal material is disposed between the first support plate and the second support plate.
- the apparatus also includes at least one bolt inserted through each of the first support member, the sheet of thermal material, and the second support plate, the at least one bolt configured to be secured into a chassis.
- at least one spring is disposed between a shoulder of the at least one bolt and the second support plate.
- FIG. 1 is an exploded view of one embodiment of a heat transfer device for transferring heat between two surfaces
- FIG. 2A is a side view of the heat transfer device of FIG. 1 ;
- FIG. 2B is a side view of the heat transfer device of FIG. 1 ;
- FIG. 2C is a side view of the heat transfer device of FIG. 1 ;
- FIG. 2D is a perspective view of the heat transfer device of FIG. 1 ;
- FIG. 3 is a perspective view of the heat transfer device of FIG. 1 in a chassis.
- Embodiments of the present invention provide for an apparatus for transferring heat between two surfaces.
- the apparatus includes a sheet of thermal material contacts one heat conducting surface on one side and a second heat conducting surface on the other side.
- the sheet of thermal material is part of an assembly and is placed between two sheets of metal to support the thermal material.
- the assembly of the sheet of metal and the thermal material are mounted via a fastener to a desired structure and a spring is inserted between the fastener and the assembly.
- the assembly can pivot relative to the fastener and the mounting structure to allow the thermal material to make solid contact with each heat conducting surface, yet still allow one or both heat conducting surfaces to be moved out of contact with the thermal material when not transferring heat.
- FIG. 1 is an exploded view of one embodiment of a heat transfer device 100 for transferring heat between two heat dissipation members.
- Heat transfer device 100 includes a back support plate 102 , a sheet of thermal material 104 , a front support plate 106 , two fasteners 108 , and two springs 110 .
- Heat transfer device 100 uses thermal material 104 to facilitate transfer of thermal energy (heat) from one surface to a nearby surface.
- Thermal material 104 acts as the heat transfer medium for heat transfer device 100 . Heat transfer occurs through contact between thermal material 104 and each heat conducting member.
- One heat conducting member shown in FIG. 3
- the other heat conducting member also shown in FIG. 3
- the two heat conducting members are oriented at a right angle with respect to one another.
- heat transfer device 100 is oriented at approximately a 45 degree angle with respect to each heat conducting member.
- each side 112 , 114 of heat transfer device is beveled. Thus each side 112 , 114 can make flat contact with each heat conducting member.
- Thermal material 104 is a material having a high thermal conductivity in the direction of desired propagation of heat. In this embodiment, the heat is transferred from side 112 to side 114 , thus thermal material 104 has a high thermal conductivity in the a-direction. The higher the thermal conductivity of thermal material 104 , the better propagation of heat between the two heat conducting members. Most materials having the high thermal conductivity desired for this application, however, do not possess the strength to withstand pressing at an angle against another surface.
- thermal material 104 is a material having a high thermal conductivity in the a-b plane.
- thermal material 104 is thermal pyrolytic graphite (TPG).
- TPG is commercially available from Momentive Performance Materials in Wilton, Conn.
- TPG may be referred to as highly oriented pyrolytic graphite (HOPG), or compression annealed pyrolytic graphite (CAPG), and refers to graphite materials consisting of crystallites of considerable size, the crystallites being highly aligned or oriented with respect to each other and having well ordered carbon layers or a high degree of preferred crystallite orientation, with an in-plane thermal conductivity greater than 1000 W/m-K.
- HOPG highly oriented pyrolytic graphite
- CAG compression annealed pyrolytic graphite
- TPG has an in-plane thermal conductivity of approximately 1,500 W/m-K.
- TPG is oriented such that the in-plane of the TPG is aligned with the a-b plane in FIG. 1 .
- thermal material 104 is a diamond-like-carbon (DLC) or other diamond material having a high in-plane thermal conductivity.
- thermal material 104 is placed between back support 102 and front support 106 .
- Each of back support 102 and front support 106 is composed of a rigid material capable of withstanding pressure placed by fasteners 108 with minimal bending. The minimal bending helps prevent the brittle thermal material 104 from cracking.
- back plate 102 and front plate 106 are aluminum.
- back plate 102 is copper and front plate 106 is steel.
- Both back plate 102 and front plate 106 are generally flat sheets having two apertures 116 for accepting fasteners 108 .
- front sheet 106 has a curved top and bottom flange for additional strength in maintaining the shape of front plate 106 .
- TPG is formed as described in U.S. Pat. No. 5,863,467 which is hereby incorporated herein by reference. Briefly, to manufacture heat transfer device 100 with TPG, pyrolytic graphite is deposited between back support member 102 and front support member 106 . Heat transfer device 100 is then heat treated to form the pyrolytic graphite into a crystal structure. The resulting crystal structure, TPG, has a high in plane conductivity.
- each fastener 108 attaches thermal transfer device 100 to a structure.
- each fastener 108 is a bolt which is placed through an aperture 116 of each of front support 102 , thermal material 104 , and back support 106 .
- fastener 108 has a shoulder for spring 110 to seat upon.
- spring 110 is a helical coil spring placed around fastener 108 and between the shoulder of fastener 108 and front plate 106 .
- spring 110 contacts shoulder of fastener 108 , is only along the side of fastener 108 and not around fastener 108 .
- spring 110 is mounted between fastener 108 and front plate 106 in other manners as known to those skilled in the art.
- spring 110 is a metal leaf spring or a compliant rubber bushing.
- fasteners 108 are bolts, other fasteners could be used.
- fasteners 108 are screws or rivots.
- fasteners 108 attach directly to back plate 102 on one end and to the structure which heat transfer device 100 is mounted to on another end.
- back plate 102 , thermal material 104 , and/or front plate 106 do not have apertures for fasteners.
- FIG. 2A illustrates a view of heat transfer device 100 where back plate 102 is forward. As can be seen, along with the beveled edges of thermal material 104 , both back plate 102 also has beveled edges. Additionally, back plate 102 has a slightly smaller width than the sheet of thermal material 104 . The slightly smaller width of back plate 102 aligns beveled edges to enable heat transfer device 100 to contact both the first and the second heat conducting members.
- FIG. 2B illustrates a side view of heat transfer device 100 showing springs 110 seated against both front plate 106 and fasteners 108 .
- each spring 110 is in a position of rest.
- Springs 110 ensure solid contact between heat transfer device 100 and each heat conducting member while allowing flexibility in the positioning of heat transfer device 100 and each heat conducting member.
- the assembly of back plate 102 , thermal material 104 , and front plate 106 the assembly compresses springs 110 against fasteners 108 .
- Fasteners 108 and therefore heat transfer device 100 are set such that springs 110 are partially compressed when heat transfer device 100 is in a resting contact position with each heat conducting member.
- springs 110 maintain a constant pressure for heat transfer device 100 against each heat conducting member.
- chassis 300 holds electronics which dissipate heat to the outside of chassis 300 with a plurality of heat sinks 302 , 304 .
- Each of heat sinks 302 , 304 is located on a door which pivots open to allow access to the inside of chassis 300 .
- Heat sink 302 has an electronics module 306 mounted thereupon. To increase the heat dissipation from electronics module 306 , heat transfer device 100 transfers heat from (warmer) heat sink 302 to (cooler) heat sink 304 .
- Heat transfer device 100 is mounted in a corner between heat sink 302 and heat sink 304 . Fasteners 108 of heat transfer device 100 are secured into a portion of chassis 300 . When doors are opened heat transfer device 100 is not in contact with heat sinks 302 , 304 , and heat transfer device 100 remains secured to chassis 300 with springs 110 in a resting position. When each door of heat sink 302 and 304 is closed, a heat conductive surface of each heat sink 302 , 304 comes into contact with the beveled edge of thermal material 104 . As each heat sink 302 , 304 contacts heat transfer device 100 , heat transfer device is allowed to translate along each fastener 108 and pivot slightly. This allows heat transfer device 100 to adjust to each heat sink 302 , 304 as they move and contact heat transfer device 100 .
- heat transfer device 100 enables heat transfer between two heat conducting members without permanent connection to the heat conducting members.
- One or both heat conducting members to be movable, while still allowing each heat conducting member to transfer heat when in contact with heat transfer device 100 .
- both fasteners 108 are aligned vertically with one another. This permits heat transfer device 100 to pivot horizontally about an axis intersecting each fastener 108 .
- each fastener 108 is located in the middle horizontally of front plate 106 , thermal material 104 , and back plate 102 , thus enabling heat transfer device 100 to pivot equally in either direction.
- a single fastener is used, thus allowing easier pivoting of heat transfer device 100 in the vertical and horizontal directions.
- fasteners 108 are located in different locations to produce different pivot axis, or no pivot axis at all.
- heat transfer device 100 is illustrated as transferring heat between two surfaces which are angled at 90 degrees with respect to one another, other angles of surfaces could also be used that are less than 180 degrees.
- heat sink 302 and heat sink 304 are at a 45 degree angle away from each other.
- the angle of the bevel on thermal material 104 would be match the angle of each heat conducting surface.
- multiple heat transfer devices are used to transfer heat between two surfaces. Multiple heat transfer devices are used, for example, to conform to a non-flat surface. When the surface or surfaces from which heat is transferred between have variations, a different heat transfer device can be used to match the different angled section of the surface. Additionally, the length and width of the heat transfer device, or devices can be changed to conform to the surfaces, the amount of heat transfer, or surrounding devices. Finally, in one embodiment, a strip of conductive pad material is used along each edge of heat transfer device 100 to improve contact with a heat conducting member.
- FIG. 3 illustrates heat transfer device 100 as transferring heat between two heat sinks 302 , 304
- heat transfer device 100 transfers heat between a heat sink and a chassis.
- heat transfer device 100 transfer heat between a heat sink and a cooling liquid.
- springs 110 are located on the back plate 102 of heat transfer device. The precise location of springs 110 is not critical, as long as springs 110 provide coupling between fasteners 108 and thermal material 104 , and force for thermal material 104 against a heat conducting member.
Abstract
Description
- For many devices removing heat is essential in order to keep the device operating effectively. To aid in removal of heat from the device, generally a heat sink is coupled to the device. The heat sink is generally sized according to the amount of heat that the device will be dissipating. In many cases, however, space around the device generating heat is limited. Generally, however, there are other heat sinks or possible heat dissipating materials near the heat sink. Each of these additional heat sinks may not be coupled to a device generating the same amount of heat, and may have extra cooling capacity.
- The heat dissipation problems are increased when using heat sinks with electronic devices, because many electronic devices generate a large amount of heat in a relatively small area. For the reasons stated above, and for other reasons stated below which will become apparent to those skilled in the art upon reading and understanding the present specification, there is a need in the art for an apparatus and method for improving the heat dissipation of devices within a chassis.
- An apparatus for transferring heat between two surfaces is provided. The apparatus includes a first support plate, a sheet of thermal material adjacent the first support plate, and a second support plate adjacent the sheet of thermal material, wherein the sheet of thermal material is disposed between the first support plate and the second support plate. The apparatus also includes at least one bolt inserted through each of the first support member, the sheet of thermal material, and the second support plate, the at least one bolt configured to be secured into a chassis. Finally, at least one spring is disposed between a shoulder of the at least one bolt and the second support plate.
- The present invention can be more easily understood, and further advantages and uses thereof are more readily apparent, when considered in view of the detailed description and the following figures in which:
-
FIG. 1 is an exploded view of one embodiment of a heat transfer device for transferring heat between two surfaces; -
FIG. 2A is a side view of the heat transfer device ofFIG. 1 ; -
FIG. 2B is a side view of the heat transfer device ofFIG. 1 ; -
FIG. 2C is a side view of the heat transfer device ofFIG. 1 ; -
FIG. 2D is a perspective view of the heat transfer device ofFIG. 1 ; and -
FIG. 3 is a perspective view of the heat transfer device ofFIG. 1 in a chassis. - In accordance with common practice, the various described features are not drawn to scale but are drawn to emphasize specific features relevant to the present invention.
- In the following detailed description, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific illustrative embodiments in which the method and system may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and that logical, mechanical and electrical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense.
- Embodiments of the present invention provide for an apparatus for transferring heat between two surfaces. The apparatus includes a sheet of thermal material contacts one heat conducting surface on one side and a second heat conducting surface on the other side. The sheet of thermal material is part of an assembly and is placed between two sheets of metal to support the thermal material. The assembly of the sheet of metal and the thermal material are mounted via a fastener to a desired structure and a spring is inserted between the fastener and the assembly. The assembly can pivot relative to the fastener and the mounting structure to allow the thermal material to make solid contact with each heat conducting surface, yet still allow one or both heat conducting surfaces to be moved out of contact with the thermal material when not transferring heat.
-
FIG. 1 is an exploded view of one embodiment of aheat transfer device 100 for transferring heat between two heat dissipation members.Heat transfer device 100 includes aback support plate 102, a sheet ofthermal material 104, afront support plate 106, twofasteners 108, and twosprings 110.Heat transfer device 100 usesthermal material 104 to facilitate transfer of thermal energy (heat) from one surface to a nearby surface. -
Thermal material 104 acts as the heat transfer medium forheat transfer device 100. Heat transfer occurs through contact betweenthermal material 104 and each heat conducting member. One heat conducting member (shown inFIG. 3 ) contactsthermal material 104 onfirst side 112 and the other heat conducting member (also shown inFIG. 3 ) contactsthermal material 104 on asecond side 114. In one embodiment, the two heat conducting members are oriented at a right angle with respect to one another. Thus,heat transfer device 100 is oriented at approximately a 45 degree angle with respect to each heat conducting member. To assure good contact with each heat conducting member, eachside side -
Thermal material 104 is a material having a high thermal conductivity in the direction of desired propagation of heat. In this embodiment, the heat is transferred fromside 112 toside 114, thusthermal material 104 has a high thermal conductivity in the a-direction. The higher the thermal conductivity ofthermal material 104, the better propagation of heat between the two heat conducting members. Most materials having the high thermal conductivity desired for this application, however, do not possess the strength to withstand pressing at an angle against another surface. - In one embodiment,
thermal material 104 is a material having a high thermal conductivity in the a-b plane. For example, in one embodiment,thermal material 104 is thermal pyrolytic graphite (TPG). TPG is commercially available from Momentive Performance Materials in Wilton, Conn. TPG may be referred to as highly oriented pyrolytic graphite (HOPG), or compression annealed pyrolytic graphite (CAPG), and refers to graphite materials consisting of crystallites of considerable size, the crystallites being highly aligned or oriented with respect to each other and having well ordered carbon layers or a high degree of preferred crystallite orientation, with an in-plane thermal conductivity greater than 1000 W/m-K. In one embodiment, TPG has an in-plane thermal conductivity of approximately 1,500 W/m-K. Here, TPG is oriented such that the in-plane of the TPG is aligned with the a-b plane inFIG. 1 . Thus, the TPG efficiently propagates heat between thefirst side 112 ofthermal material 104 and thesecond side 114. In an alternative embodiment,thermal material 104 is a diamond-like-carbon (DLC) or other diamond material having a high in-plane thermal conductivity. - For extra support,
thermal material 104 is placed betweenback support 102 andfront support 106. Each ofback support 102 andfront support 106 is composed of a rigid material capable of withstanding pressure placed byfasteners 108 with minimal bending. The minimal bending helps prevent the brittlethermal material 104 from cracking. In one embodiment,back plate 102 andfront plate 106 are aluminum. In an alternative embodiment,back plate 102 is copper andfront plate 106 is steel. Bothback plate 102 andfront plate 106 are generally flat sheets having twoapertures 116 for acceptingfasteners 108. As shown inFIG. 1 ,front sheet 106 has a curved top and bottom flange for additional strength in maintaining the shape offront plate 106. - In one embodiment, TPG is formed as described in U.S. Pat. No. 5,863,467 which is hereby incorporated herein by reference. Briefly, to manufacture
heat transfer device 100 with TPG, pyrolytic graphite is deposited betweenback support member 102 andfront support member 106.Heat transfer device 100 is then heat treated to form the pyrolytic graphite into a crystal structure. The resulting crystal structure, TPG, has a high in plane conductivity. - Each
fastener 108 attachesthermal transfer device 100 to a structure. In this embodiment, eachfastener 108 is a bolt which is placed through anaperture 116 of each offront support 102,thermal material 104, and backsupport 106. In one embodiment,fastener 108 has a shoulder forspring 110 to seat upon. In this embodiment,spring 110 is a helical coil spring placed aroundfastener 108 and between the shoulder offastener 108 andfront plate 106. In an alternative embodiment,spring 110 contacts shoulder offastener 108, is only along the side offastener 108 and not aroundfastener 108. In other embodiments,spring 110 is mounted betweenfastener 108 andfront plate 106 in other manners as known to those skilled in the art. Additionally, in other embodiments,spring 110 is a metal leaf spring or a compliant rubber bushing. Further, although as shown inFIG. 1 ,fasteners 108 are bolts, other fasteners could be used. For example, in an alternative embodiment,fasteners 108 are screws or rivots. In another embodiment,fasteners 108 attach directly to backplate 102 on one end and to the structure whichheat transfer device 100 is mounted to on another end. Thus, backplate 102,thermal material 104, and/orfront plate 106 do not have apertures for fasteners. - Referring now to
FIGS. 2A , 2B, 2C, and 2D, side and perspective views ofheat transfer device 100 are shown.FIG. 2A illustrates a view ofheat transfer device 100 whereback plate 102 is forward. As can be seen, along with the beveled edges ofthermal material 104, bothback plate 102 also has beveled edges. Additionally, backplate 102 has a slightly smaller width than the sheet ofthermal material 104. The slightly smaller width ofback plate 102 aligns beveled edges to enableheat transfer device 100 to contact both the first and the second heat conducting members. -
FIG. 2B illustrates a side view ofheat transfer device 100 showing springs 110 seated against bothfront plate 106 andfasteners 108. As shown eachspring 110 is in a position of rest.Springs 110 ensure solid contact betweenheat transfer device 100 and each heat conducting member while allowing flexibility in the positioning ofheat transfer device 100 and each heat conducting member. Whenheat transfer device 100 is pressed against each heat conducting member (or each heat conducting member is pressed against heat transfer device), the assembly ofback plate 102,thermal material 104, andfront plate 106, the assembly compressessprings 110 againstfasteners 108.Fasteners 108 and thereforeheat transfer device 100 are set such that springs 110 are partially compressed whenheat transfer device 100 is in a resting contact position with each heat conducting member. Thus, springs 110 maintain a constant pressure forheat transfer device 100 against each heat conducting member. - Referring now to
FIG. 3 , one embodiment ofheat transfer device 100 in achassis 300. In this embodiment,chassis 300 holds electronics which dissipate heat to the outside ofchassis 300 with a plurality ofheat sinks heat sinks chassis 300.Heat sink 302 has anelectronics module 306 mounted thereupon. To increase the heat dissipation fromelectronics module 306,heat transfer device 100 transfers heat from (warmer)heat sink 302 to (cooler)heat sink 304. -
Heat transfer device 100 is mounted in a corner betweenheat sink 302 andheat sink 304.Fasteners 108 ofheat transfer device 100 are secured into a portion ofchassis 300. When doors are openedheat transfer device 100 is not in contact withheat sinks heat transfer device 100 remains secured tochassis 300 withsprings 110 in a resting position. When each door ofheat sink heat sink thermal material 104. As eachheat sink heat transfer device 100, heat transfer device is allowed to translate along eachfastener 108 and pivot slightly. This allowsheat transfer device 100 to adjust to eachheat sink heat transfer device 100. - Advantageously,
heat transfer device 100 enables heat transfer between two heat conducting members without permanent connection to the heat conducting members. One or both heat conducting members to be movable, while still allowing each heat conducting member to transfer heat when in contact withheat transfer device 100. As shown inFIG. 3 , bothfasteners 108 are aligned vertically with one another. This permitsheat transfer device 100 to pivot horizontally about an axis intersecting eachfastener 108. Additionally, eachfastener 108 is located in the middle horizontally offront plate 106,thermal material 104, and backplate 102, thus enablingheat transfer device 100 to pivot equally in either direction. In an alternative embodiment, a single fastener is used, thus allowing easier pivoting ofheat transfer device 100 in the vertical and horizontal directions. In other embodiments,fasteners 108 are located in different locations to produce different pivot axis, or no pivot axis at all. - Although
FIG. 3 heat transfer device 100 is illustrated as transferring heat between two surfaces which are angled at 90 degrees with respect to one another, other angles of surfaces could also be used that are less than 180 degrees. For example, in one embodiment,heat sink 302 andheat sink 304 are at a 45 degree angle away from each other. Here, the angle of the bevel onthermal material 104 would be match the angle of each heat conducting surface. - In an alternative embodiment, multiple heat transfer devices are used to transfer heat between two surfaces. Multiple heat transfer devices are used, for example, to conform to a non-flat surface. When the surface or surfaces from which heat is transferred between have variations, a different heat transfer device can be used to match the different angled section of the surface. Additionally, the length and width of the heat transfer device, or devices can be changed to conform to the surfaces, the amount of heat transfer, or surrounding devices. Finally, in one embodiment, a strip of conductive pad material is used along each edge of
heat transfer device 100 to improve contact with a heat conducting member. - Further, although
FIG. 3 illustratesheat transfer device 100 as transferring heat between twoheat sinks heat transfer device 100 transfers heat between a heat sink and a chassis. In other embodiments,heat transfer device 100 transfer heat between a heat sink and a cooling liquid. Finally, in an alternative embodiment, springs 110 are located on theback plate 102 of heat transfer device. The precise location ofsprings 110 is not critical, as long assprings 110 provide coupling betweenfasteners 108 andthermal material 104, and force forthermal material 104 against a heat conducting member. - Although specific embodiments have been illustrated and described herein, it will be appreciated by those of ordinary skill in the art that any arrangement, which is calculated to achieve the same purpose, may be substituted for the specific embodiment shown. This application is intended to base any adaptations or variations of the present invention. Therefore, it is manifestly intended that this invention be limited only by the claims and the equivalents thereof.
Claims (22)
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US11/831,603 US20090032218A1 (en) | 2007-07-31 | 2007-07-31 | Apparatus for transferring between two heat conducting surfaces |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20090032217A1 (en) * | 2007-07-31 | 2009-02-05 | Adc Telecommunications, Inc. | Apparatus for spreading heat over a finned surface |
US20090032234A1 (en) * | 2007-07-31 | 2009-02-05 | Adc Telecommunications, Inc. | Apparatus for transferring heat in a fin of a heat sink |
US20090141452A1 (en) * | 2007-11-30 | 2009-06-04 | Adc Telecommunications, Inc. | Apparatus for directing heat to a heat spreader |
US10932392B2 (en) * | 2014-10-31 | 2021-02-23 | Aavid Thermal Corp. | Vehicle thermal management system |
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