US20060090882A1 - Thin film evaporation heat dissipation device that prevents bubble formation - Google Patents
Thin film evaporation heat dissipation device that prevents bubble formation Download PDFInfo
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- US20060090882A1 US20060090882A1 US10/977,860 US97786004A US2006090882A1 US 20060090882 A1 US20060090882 A1 US 20060090882A1 US 97786004 A US97786004 A US 97786004A US 2006090882 A1 US2006090882 A1 US 2006090882A1
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- sealed housing
- heat dissipation
- working fluid
- dissipation device
- heat
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
- H01L23/427—Cooling by change of state, e.g. use of heat pipes
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- 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
- F28D15/0233—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 the conduits having a particular shape, e.g. non-circular cross-section, annular
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- 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
- F28D15/04—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 with tubes having a capillary structure
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- 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
- F28D15/06—Control arrangements therefor
-
- 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
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
- F28F13/125—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation by stirring
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- 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
- F28D2015/0291—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 comprising internal rotor means, e.g. turbine driven by the working fluid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- Embodiments of the present invention relate to heat dissipation devices.
- an embodiment of the present invention relates to a two-phase (liquid/vapor), forced convection heat dissipation device that disperses a working fluid, which results in the prevention of bubble formation and/or creation of a thin film of the working fluid on an evaporation region for improved evaporation thereof.
- microelectronic device industry continues to see tremendous advances in technologies that permit increased circuit density and complexity, and equally dramatic decreases in package sizes.
- Such high density and high functionality in these microelectronic devices has resulted in an increase in the density of the power consumption by the integrated circuit components in the microelectronic device, which, in turn, increases the average junction temperature of the microelectronic device. If the temperature of the microelectronic device becomes too high, the integrated circuits within the microelectronic device may be damaged or destroyed.
- a heat pipe 300 is a simple device that can quickly transfer heat from one point to another without the use of electrical or mechanical energy input.
- the heat pipe 300 is generally formed by evacuating air from a sealed pipe 302 that contains a “working fluid” 304 , such as water or alcohol.
- the sealed pipe 302 is usually constructed from a thermally conductive material, such as copper, copper alloys, aluminum, aluminum alloys, and the like, and oriented with a first end 306 proximate a heat source 308 .
- the working fluid 304 which is in a liquid phase proximate the heat source 308 , increases in temperature and evaporates to form a vapor phase of the working fluid 304 , which moves (shown by arrows 312 ) toward a cooler, second end 314 of the sealed pipe 302 . As the vapor phase moves toward the sealed pipe second end 314 , it condenses to again form the liquid phase of the working fluid 304 , thereby releasing the heat absorbed during the evaporation of the liquid phase of the working fluid 304 .
- the liquid phase returns, usually by capillary action, gravity (thermosiphon), or a wick 316 to the sealed pipe first end 306 proximate the heat source 308 (shown by arrows 318 ), wherein the process is repeated.
- the heat pipe 300 is able to rapidly transfer heat away from the heat source 308 and requires no external driving force other than a temperature differential.
- FIG. 1 is a side cross-sectional view of an embodiment of a thin film evaporation heat dissipation device, according to the present invention
- FIG. 2 is a side cross-sectional view of another embodiment of a thin film evaporation heat dissipation device, according to the present invention.
- FIG. 3 is a side cross-sectional view of a thermosiphon configuration of a thin film evaporation heat dissipation device, according to the present invention
- FIG. 4 is a side cross-sectional view of another embodiment of a thin film evaporation heat dissipation device, according to the present invention.
- FIG. 5 is an oblique view of a computer system having a heat dissipation device of the present integrated therein, according to the present invention.
- FIG. 6 is a side cross-sectional view of a heat pipe/vapor chamber, as known in the art.
- An embodiment of the present invention comprises a two-phase (liquid/vapor) heat dissipation device to remove heat from a heat generating device, wherein the heat dissipation device has an internal dispersion device (e.g., a rotating device, such as a fan) and is adapted to decrease boiling resistance and increase the critical heat flux.
- an internal dispersion device e.g., a rotating device, such as a fan
- FIG. 1 illustrates a heat dissipation device 100 according to the present invention.
- the heat dissipation device 100 may comprise a sealed housing 102 , which may be constructed of conductive material including, but not limited to, copper, copper alloys, aluminum, aluminum alloys, and the like.
- a first external portion 104 of the sealed housing 102 thermally contacts a heat generating device 106 , such as a microelectronic device (e.g., central processing units (CPUs), chipsets, memory devices, ASICs, and the like).
- a dispersion device 108 e.g., a rotating device, such as a fan
- a rotating device such as a fan
- a working fluid 112 within the sealed housing 102 when in a liquid phase, is a dispersed by the dispersion device 108 as a liquid spray toward a vaporization region 114 , within the sealed housing 102 , proximate the heat generating device 106 .
- the working fluid 112 liquid spray is dispersed substantially uniformly to form a thin layer on the vaporization region 114 .
- the vaporization region should be substantially continuously wetted with the working fluid 112 .
- the dispersion device 108 “flattens” substantially all working fluid bubbles before they can form. If such working fluid bubbles form, they impede the working fluid from wetting the vaporization region 114 , which greatly reduces the efficiency of the heat dissipation device 100 .
- the working fluid 112 may include, but is not limited to water, Freon, acetone, alcohol, and the like.
- the heat from the heat generating device 106 is transferred through the sealed housing 102 by conductive heat transfer. This heat vaporizes the working fluid 112 liquid film into a vapor phase within the vaporization region 114 .
- the vapor phase of the working fluid 112 substantially follows along a path illustrated by arrows 116 in FIG. 1 to a cooler, condensation region 122 within the sealed housing 102 .
- the vapor phase of the working fluid 112 condenses in the condensation region 122 to form a liquid phase.
- the sealed housing 102 may be evacuated to at or near vacuum condition.
- the pressure condition within the sealed housing 102 is, of course, dependant on the working fluid 112 used. For example, if the working fluid 112 is water, the sealed housing 102 may have a pressure between about 10-50 kPa. If the working fluid is Freon (i.e., R134a), the pressure can be between about 600-700 kPa.
- the liquid phase of the working fluid 112 is absorbed by at least one wick structure 124 , which can abut an interior surface 120 of the sealed housing 102 .
- the wick structure 124 may be any appropriate material including, but not limited to, sintered porous structures (such as porous copper structures), gauzes (such as bronze mesh), wires, and the like.
- the liquid phase of the working fluid 112 is then transported from the condensation region 122 by the wick structure 124 in the direction illustrated by arrows 126 to an area proximate the dispersion device 108 .
- the liquid phase of the working fluid 112 returns to the dispersion device 108 , which disperses the working fluid 112 as a liquid spray toward the heat generating device 106 perpetuating the evaporation/condensation cycle described.
- the heat dissipation device 100 is oriented such that the liquid phase working fluid drips onto the dispersion device 108 (shown as arrows 118 ), such as shown in FIG. 1 . It is understood that the heat dissipation device can be placed in any position with respect to gravity. However, for alternate orientations, it is preferred that the wick structure 124 lines the sealed housing interior surface 120 (shown in FIG. 2 as heat dissipation device 150 ) to ensure effective operation. As shown in FIG.
- a heat dissipation device 160 can be oriented in a vertical configuration such that the liquid phase 152 of the working fluid 112 moves along arrows 152 substantially in the direction of gravitational pull 130 .
- the vapor phase of the working fluid 112 moves substantially in the direction shown as arrows 154 .
- No wick structure is used with such a thermosiphon configuration, except that in some cases a boiling structure 156 may be required, as will be understood by those skilled in the art.
- a heat sink (such as a plurality of high surface area, thermally conductive projections 128 ) may extend from a second external portion 132 of the sealed housing 102 proximate the condensation region 122 .
- the heat absorbed by the sealed housing 102 proximate the condensation region 122 is conductively transferred to the conductive projections 128 .
- the high surface area thermally conductive projections 128 allow heat to be convectively dissipated from the projections 128 into the air surrounding the heat dissipation device 100 (referring back to FIG. 1 ).
- High surface area conductive projections 128 are generally used because the rate at which heat is dissipated is substantially proportional to the surface area of the high surface area conductive projections 128 .
- the conductive projections 128 may be constructed of highly conductive material including, but not limited to, copper, copper alloys, aluminum, aluminum alloys, and the like. It is, of course, understood that the high surface area conductive projections 128 may include, but are not limited to, elongate planar fin-like structures and columnar/pillar structures.
- a divider plate 134 may positioned within the sealed housing, which substantially separates the vapor phase of the working fluid 112 from the liquid phase of the working fluid 112 , thereby essentially dividing the sealed housing 102 into a vapor path chamber 136 and a liquid path chamber 138 .
- the divider plate 134 assists the vapor phase of the working fluid 112 move toward the condensation region 122 and assists the liquid phase of the working fluid 112 move toward the dispersion device 108 .
- the divider plate 134 in one embodiment, separates an inlet side 142 of the dispersion device 108 from an outlet side 144 of the dispersion device 108 in order to prevent the vapor phase of the working fluid 112 circulating through the dispersion device 108 .
- the divider plate 134 can substantially abut the wick structure 124 , so that the pressure differential created by the dispersion device 108 assists in pulling the liquid phase of the working fluid 112 through the wick structure 124 toward the dispersion device 108 .
- the dispersion device 108 may be a water-proof or “liquid”-proof, flat rotary fan with no hub or at least a very small hub and separates at least a portion of the vapor path chamber 136 from a portion of the liquid path chamber 138 .
- a flat rotary fan has its motor located the fan periphery.
- the dispersion device 108 may comprise a rotor consisting of two flat washers with a magnet therebetween and a stator comprising a printer circuit board placed in a gap between the washers of the rotor. Power for the dispersion device 108 is delivered from an external source (not shown). As previously discussed, the dispersion device 108 distributes the working fluid 112 as a substantially uniform film on the vaporization region 114 . A substantially uniform spray distribution of the working fluid 112 assists in having the vaporization region 114 substantially “wet” during operation, suppression of bubble formation, and having only a thin liquid film collecting in the vaporization region 114 .
- a thermally insulation material 146 may be placed abutting at least a portion of an outside surface 148 of the sealed housing 102 .
- the thermally insulation material 146 assists in preventing the condensation of the vapor phase of the working fluid 112 on the sealed housing 102 walls within the vapor path chamber 136 and from vaporizing within the liquid path chamber 138 (from potential external heat).
- the dispersion device 108 is described as “blowing” the liquid phase of the working fluid 112 toward the vaporization region 114 , it has been found that the dispersion device 108 can spin in the opposite direction and still be effective, as shown in FIG. 4 .
- the working fluid 112 is vaporized in the vaporization region 114 .
- the vapor phase of the working fluid 112 substantially follows the direction shown as arrows 162 to the condensation region, where is condenses into the liquid phase of the working fluid 112 .
- the wick 124 transports the liquid phase of the working fluid 112 from the condensation region 122 substantially along the direction of arrows 164 to the vaporization region 114 .
- heat generating device 106 in terms of a microelectronic device, it may be anything which generates heat.
- heat dissipation devices 100 , 150 , 160 , and 170 are shown with a specific configuration in FIGS. 1, 2 , 3 , and 4 , respectively, it is, of course, understood that all of the components of the heat dissipation devices 100 , 150 , 160 , and 170 may take on any appropriate configuration and shape.
- the microelectronic device assemblies formed by the present invention may also be used in a computer system 210 , as shown in FIG. 5 .
- the computer system 210 may comprise an substrate or motherboard 220 with at least one heat dissipation device 100 , 150 , 160 , and 170 as described above, abutting a microelectronic device (not shown), including but not limited to, a central processing units (CPUs), chipsets, memory devices, ASICs, and the like, within a housing or chassis 240 .
- the external substrate or motherboard 220 may be attached to various peripheral devices including inputs devices, such as a keyboard 250 and/or a mouse 260 , and a display device, such as a CRT monitor 270 .
Abstract
Apparatus for removing heat from a heat generating device comprising a two-phase heat dissipation device having a dispersion device disposed within the heat dissipation device. The heat dissipation device includes a sealed housing having a vaporization region within the sealed housing and a condensation region within the sealed housing, a working fluid disposed within said seal housing; and the dispersion device being adapted to disperse said working fluid toward the sealed housing vaporization region. The heat dissipation device may further include a divider plate dispose within the sealed housing, wherein the divider plate substantially divides the sealed housing into a vapor path chamber and a liquid path chamber.
Description
- 1. Field of the Invention
- Embodiments of the present invention relate to heat dissipation devices. In particular, an embodiment of the present invention relates to a two-phase (liquid/vapor), forced convection heat dissipation device that disperses a working fluid, which results in the prevention of bubble formation and/or creation of a thin film of the working fluid on an evaporation region for improved evaporation thereof.
- 2. State of the Art
- The microelectronic device industry continues to see tremendous advances in technologies that permit increased circuit density and complexity, and equally dramatic decreases in package sizes. Such high density and high functionality in these microelectronic devices has resulted in an increase in the density of the power consumption by the integrated circuit components in the microelectronic device, which, in turn, increases the average junction temperature of the microelectronic device. If the temperature of the microelectronic device becomes too high, the integrated circuits within the microelectronic device may be damaged or destroyed.
- Various apparatus and techniques have been used and are presently being used for removing heat from microelectronic devices. One known method of removing heat from a microelectronic device is the use of a
heat pipe 300, as shown inFIG. 6 . Aheat pipe 300 is a simple device that can quickly transfer heat from one point to another without the use of electrical or mechanical energy input. Theheat pipe 300 is generally formed by evacuating air from a sealedpipe 302 that contains a “working fluid” 304, such as water or alcohol. The sealedpipe 302 is usually constructed from a thermally conductive material, such as copper, copper alloys, aluminum, aluminum alloys, and the like, and oriented with afirst end 306 proximate aheat source 308. The workingfluid 304, which is in a liquid phase proximate theheat source 308, increases in temperature and evaporates to form a vapor phase of the workingfluid 304, which moves (shown by arrows 312) toward a cooler,second end 314 of the sealedpipe 302. As the vapor phase moves toward the sealed pipesecond end 314, it condenses to again form the liquid phase of the workingfluid 304, thereby releasing the heat absorbed during the evaporation of the liquid phase of the workingfluid 304. The liquid phase returns, usually by capillary action, gravity (thermosiphon), or awick 316 to the sealed pipefirst end 306 proximate the heat source 308 (shown by arrows 318), wherein the process is repeated. Thus, theheat pipe 300 is able to rapidly transfer heat away from theheat source 308 and requires no external driving force other than a temperature differential. - However, with the ever increasing temperature, simple heat pipes are not capable of removing sufficient heat from microelectronic device, as current heat pipe designs suffer from low critical heat flux and high evaporator resistance, as will be understood to those skilled in the art. Improvements to heat pipes, such as forced convection with pumps and/or microchannels, can be implemented. However, these improvements have not been entirely successful. Pumps are not sufficiently reliable and microchannels can develop liquid slugs in the vapor portion of the microchannel which blocks the vapor flow to the condensation end of microchannel causing partial or total dry-out condition resulting in heat transfer failure. Furthermore, using more complex cooling methods, such cryogenic cooling or refrigeration cooling are too expensive for use in high volume commercial electronic devices.
- Therefore, it would be advantageous to develop heat dissipation device designs having an improved critical heat flux and lower evaporator resistance, while still having using simple components.
- While the specification concludes with claims particularly pointing out and distinctly claiming that which is regarded as the present invention, the advantages of this invention can be more readily ascertained from the following description of the invention when read in conjunction with the accompanying drawings to which:
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FIG. 1 is a side cross-sectional view of an embodiment of a thin film evaporation heat dissipation device, according to the present invention; -
FIG. 2 is a side cross-sectional view of another embodiment of a thin film evaporation heat dissipation device, according to the present invention; -
FIG. 3 is a side cross-sectional view of a thermosiphon configuration of a thin film evaporation heat dissipation device, according to the present invention; -
FIG. 4 is a side cross-sectional view of another embodiment of a thin film evaporation heat dissipation device, according to the present invention; -
FIG. 5 is an oblique view of a computer system having a heat dissipation device of the present integrated therein, according to the present invention; and -
FIG. 6 is a side cross-sectional view of a heat pipe/vapor chamber, as known in the art. - In the following detailed description, reference is made to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention, although different, are not necessarily mutually exclusive. For example, a particular feature, structure, or characteristic described herein, in connection with one embodiment, may be implemented within other embodiments without departing from the spirit and scope of the invention. In addition, it is to be understood that the location or arrangement of individual elements within each disclosed embodiment may be modified without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, appropriately interpreted, along with the full range of equivalents to which the claims are entitled. In the drawings, like numerals refer to the same or similar functionality throughout the several views.
- An embodiment of the present invention comprises a two-phase (liquid/vapor) heat dissipation device to remove heat from a heat generating device, wherein the heat dissipation device has an internal dispersion device (e.g., a rotating device, such as a fan) and is adapted to decrease boiling resistance and increase the critical heat flux.
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FIG. 1 illustrates aheat dissipation device 100 according to the present invention. Theheat dissipation device 100 may comprise a sealedhousing 102, which may be constructed of conductive material including, but not limited to, copper, copper alloys, aluminum, aluminum alloys, and the like. A firstexternal portion 104 of the sealedhousing 102 thermally contacts aheat generating device 106, such as a microelectronic device (e.g., central processing units (CPUs), chipsets, memory devices, ASICs, and the like). A dispersion device 108 (e.g., a rotating device, such as a fan) may be positioned within the sealedhousing 102 proximate theheat generating device 106. - A working
fluid 112 within the sealedhousing 102, when in a liquid phase, is a dispersed by thedispersion device 108 as a liquid spray toward avaporization region 114, within the sealedhousing 102, proximate theheat generating device 106. The workingfluid 112 liquid spray is dispersed substantially uniformly to form a thin layer on thevaporization region 114. Thus, the vaporization region should be substantially continuously wetted with the workingfluid 112. Furthermore, thedispersion device 108 “flattens” substantially all working fluid bubbles before they can form. If such working fluid bubbles form, they impede the working fluid from wetting thevaporization region 114, which greatly reduces the efficiency of theheat dissipation device 100. - The working
fluid 112 may include, but is not limited to water, Freon, acetone, alcohol, and the like. The heat from theheat generating device 106 is transferred through the sealedhousing 102 by conductive heat transfer. This heat vaporizes the workingfluid 112 liquid film into a vapor phase within thevaporization region 114. The vapor phase of the workingfluid 112 substantially follows along a path illustrated byarrows 116 inFIG. 1 to a cooler,condensation region 122 within the sealedhousing 102. The vapor phase of the workingfluid 112 condenses in thecondensation region 122 to form a liquid phase. During the condensation process, the heat absorbed during the evaporation of the liquid phase of the workingfluid 112 is released and the released heat is transferred to the sealedhousing 102 proximate thecondensation region 122. The sealedhousing 102 may be evacuated to at or near vacuum condition. The pressure condition within the sealedhousing 102 is, of course, dependant on the workingfluid 112 used. For example, if the workingfluid 112 is water, the sealedhousing 102 may have a pressure between about 10-50 kPa. If the working fluid is Freon (i.e., R134a), the pressure can be between about 600-700 kPa. - In a heat pipe or vapor chamber configuration of the
heat dissipation device 100, the liquid phase of the workingfluid 112 is absorbed by at least onewick structure 124, which can abut aninterior surface 120 of the sealedhousing 102. Thewick structure 124 may be any appropriate material including, but not limited to, sintered porous structures (such as porous copper structures), gauzes (such as bronze mesh), wires, and the like. The liquid phase of the workingfluid 112 is then transported from thecondensation region 122 by thewick structure 124 in the direction illustrated byarrows 126 to an area proximate thedispersion device 108. The liquid phase of the workingfluid 112 returns to thedispersion device 108, which disperses the workingfluid 112 as a liquid spray toward the heat generatingdevice 106 perpetuating the evaporation/condensation cycle described. - In an embodiment of the present invention, the
heat dissipation device 100 is oriented such that the liquid phase working fluid drips onto the dispersion device 108 (shown as arrows 118), such as shown inFIG. 1 . It is understood that the heat dissipation device can be placed in any position with respect to gravity. However, for alternate orientations, it is preferred that thewick structure 124 lines the sealed housing interior surface 120 (shown inFIG. 2 as heat dissipation device 150) to ensure effective operation. As shown inFIG. 3 , it is also understood that aheat dissipation device 160, can be oriented in a vertical configuration such that theliquid phase 152 of the workingfluid 112 moves alongarrows 152 substantially in the direction ofgravitational pull 130. The vapor phase of the workingfluid 112 moves substantially in the direction shown asarrows 154. No wick structure is used with such a thermosiphon configuration, except that in some cases a boilingstructure 156 may be required, as will be understood by those skilled in the art. - In an embodiment of the present invention, a heat sink (such as a plurality of high surface area, thermally conductive projections 128) may extend from a second
external portion 132 of the sealedhousing 102 proximate thecondensation region 122. Thus, the heat absorbed by the sealedhousing 102 proximate thecondensation region 122 is conductively transferred to theconductive projections 128. The high surface area thermallyconductive projections 128 allow heat to be convectively dissipated from theprojections 128 into the air surrounding the heat dissipation device 100 (referring back toFIG. 1 ). High surface areaconductive projections 128 are generally used because the rate at which heat is dissipated is substantially proportional to the surface area of the high surface areaconductive projections 128. Theconductive projections 128 may be constructed of highly conductive material including, but not limited to, copper, copper alloys, aluminum, aluminum alloys, and the like. It is, of course, understood that the high surface areaconductive projections 128 may include, but are not limited to, elongate planar fin-like structures and columnar/pillar structures. - In an embodiment of the present invention, a
divider plate 134 may positioned within the sealed housing, which substantially separates the vapor phase of the workingfluid 112 from the liquid phase of the workingfluid 112, thereby essentially dividing the sealedhousing 102 into avapor path chamber 136 and aliquid path chamber 138. Thedivider plate 134 assists the vapor phase of the workingfluid 112 move toward thecondensation region 122 and assists the liquid phase of the workingfluid 112 move toward thedispersion device 108. Thedivider plate 134, in one embodiment, separates aninlet side 142 of thedispersion device 108 from anoutlet side 144 of thedispersion device 108 in order to prevent the vapor phase of the workingfluid 112 circulating through thedispersion device 108. In one embodiment, thedivider plate 134 can substantially abut thewick structure 124, so that the pressure differential created by thedispersion device 108 assists in pulling the liquid phase of the workingfluid 112 through thewick structure 124 toward thedispersion device 108. - The
dispersion device 108 may be a water-proof or “liquid”-proof, flat rotary fan with no hub or at least a very small hub and separates at least a portion of thevapor path chamber 136 from a portion of theliquid path chamber 138. A flat rotary fan has its motor located the fan periphery. Thedispersion device 108 may comprise a rotor consisting of two flat washers with a magnet therebetween and a stator comprising a printer circuit board placed in a gap between the washers of the rotor. Power for thedispersion device 108 is delivered from an external source (not shown). As previously discussed, thedispersion device 108 distributes the workingfluid 112 as a substantially uniform film on thevaporization region 114. A substantially uniform spray distribution of the workingfluid 112 assists in having thevaporization region 114 substantially “wet” during operation, suppression of bubble formation, and having only a thin liquid film collecting in thevaporization region 114. - A
thermally insulation material 146 may be placed abutting at least a portion of anoutside surface 148 of the sealedhousing 102. Thethermally insulation material 146 assists in preventing the condensation of the vapor phase of the workingfluid 112 on the sealedhousing 102 walls within thevapor path chamber 136 and from vaporizing within the liquid path chamber 138 (from potential external heat). - Although the
dispersion device 108 is described as “blowing” the liquid phase of the workingfluid 112 toward thevaporization region 114, it has been found that thedispersion device 108 can spin in the opposite direction and still be effective, as shown inFIG. 4 . The workingfluid 112 is vaporized in thevaporization region 114. The vapor phase of the workingfluid 112 substantially follows the direction shown asarrows 162 to the condensation region, where is condenses into the liquid phase of the workingfluid 112. Thewick 124 transports the liquid phase of the workingfluid 112 from thecondensation region 122 substantially along the direction ofarrows 164 to thevaporization region 114. - It is, of course, understood that although the present detailed description discusses the
heat generating device 106 in terms of a microelectronic device, it may be anything which generates heat. Furthermore, although theheat dissipation devices FIGS. 1, 2 , 3, and 4, respectively, it is, of course, understood that all of the components of theheat dissipation devices - The microelectronic device assemblies formed by the present invention may also be used in a
computer system 210, as shown inFIG. 5 . Thecomputer system 210 may comprise an substrate or motherboard 220 with at least oneheat dissipation device chassis 240. The external substrate or motherboard 220 may be attached to various peripheral devices including inputs devices, such as akeyboard 250 and/or amouse 260, and a display device, such as aCRT monitor 270. - Having thus described in detail embodiments of the present invention, it is understood that the invention defined by the appended claims is not to be limited by particular details set forth in the above description, as many apparent variations thereof are possible without departing from the spirit or scope thereof.
Claims (22)
1. A heat dissipation device, comprising:
a sealed housing having a vaporization region within said sealed housing and a condensation region within said sealed housing;
a working fluid disposed within said seal housing; and
a dispersion device disposed within said sealed housing, said dispersion device being adapted to disperse said working fluid.
2. The heat dissipation device of claim 1 , wherein said dispersion device disperses said working fluid toward said sealed housing vaporization region.
3. The heat dissipation device of claim 1 , further including a divider plate dispose within said sealed housing, wherein said divider plate substantially divides said sealed housing into a vapor path chamber and a liquid path chamber.
4. The heat dissipation device of claim 3 , wherein said divider plate abuts said dispersion device.
5. The heat dissipation device of claim 1 , further including at least one wick structure.
6. The heat dissipation device of claim 5 , wherein said at least one wick structure abuts an interior surface of said sealed housing.
7. The heat dissipation device of claim 6 , wherein said at least one wick structure extends from at least a position proximate said condensation region to at least a position proximate said dispersion device.
8. The heat dissipation device of claim 1 , a thermally insulative material on at least a portion of an exterior surface of said sealed housing.
9. The heat dissipation device of claim 1 , a heat sink on an exterior of said sealed housing proximate the condensation region.
10. An assembly, comprising:
a heat generating device;
a sealed housing having a vaporization region within said sealed housing and a condensation region within said sealed housing, wherein said heat generating mechanism abuts an exterior surface of said sealed housing proximate said vaporization region;
a working fluid disposed within said seal housing; and
a dispersion device disposed within said sealed housing, said dispersion device being adapted to disperse said working fluid.
11. The assembly of claim 10 , wherein said heat generating device comprises a microelectronic device.
12. The assembly of claim 10 , wherein said dispersion device disperses said working fluid toward said sealed housing vaporization region.
13. The assembly of claim 10 , further including a divider plate dispose within said sealed housing, wherein said divider plate substantially divides said sealed housing into a vapor path chamber and a liquid path chamber.
14. The assembly of claim 13 , wherein said divider plate abuts said dispersion device.
15. The assembly of claim 10 , further including at least one wick structure.
16. The assembly of claim 15 , wherein said at least one wick structure abuts an interior surface of said sealed housing.
17. The assembly of claim 16 , wherein said at least one wick structure extends from at least a position proximate said condensation region to at least a position proximate said dispersion device.
18. The assembly of claim 10 , a thermally insulative material on at least a portion of an exterior surface of said sealed housing.
19. The assembly of claim 10 , a heat sink on an exterior of said sealed housing proximate the condensation region.
20. An electronic system, comprising:
a substrate within a housing;
at least one microelectronic device attached to said substrate;
a heat dissipation device, comprising:
a sealed housing having a vaporization region within said sealed housing and a condensation region within said sealed housing;
a working fluid disposed within said seal housing; and
a dispersion device disposed within said sealed housing, said dispersion device being adapted to disperse said working fluid; and
an input device interfaced with said substrate; and
a display device interfaced with said substrate.
21. The electronic system of claim 20 , wherein said dispersion device of said heat dissipation device disperses said working fluid toward said sealed housing vaporization region.
22. The electronic system of claim 20 , wherein said heat dissipation device further includes a divider plate dispose within said sealed housing, wherein said divider plate substantially divides said sealed housing into a vapor path chamber and a liquid path chamber.
Priority Applications (1)
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US10/977,860 US20060090882A1 (en) | 2004-10-28 | 2004-10-28 | Thin film evaporation heat dissipation device that prevents bubble formation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/977,860 US20060090882A1 (en) | 2004-10-28 | 2004-10-28 | Thin film evaporation heat dissipation device that prevents bubble formation |
Publications (1)
Publication Number | Publication Date |
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US20060090882A1 true US20060090882A1 (en) | 2006-05-04 |
Family
ID=36260466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/977,860 Abandoned US20060090882A1 (en) | 2004-10-28 | 2004-10-28 | Thin film evaporation heat dissipation device that prevents bubble formation |
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US (1) | US20060090882A1 (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050225943A1 (en) * | 2004-04-07 | 2005-10-13 | Delta Electronics, Inc. | Heat dissipation module |
US20090166855A1 (en) * | 2007-12-31 | 2009-07-02 | Chia-Pin Chiu | Cooling solutions for die-down integrated circuit packages |
WO2010105125A3 (en) * | 2009-03-12 | 2010-11-04 | Molex Incorporated | Cooling device and electronic device comprising the cooling device |
US20110017431A1 (en) * | 2009-03-06 | 2011-01-27 | Y.C. Lee | Flexible thermal ground plane and manufacturing the same |
US20110041892A1 (en) * | 2009-08-21 | 2011-02-24 | Alexander Levin | Heat sink system for large-size photovoltaic receiver |
US20110160064A1 (en) * | 2008-09-09 | 2011-06-30 | Koninklijke Philips Electronics N.V. | Horizontal finned heat exchanger for cryogenic recondensing refrigeration |
WO2011158008A3 (en) * | 2010-06-18 | 2012-05-18 | John Philip Roger Hammerbeck | A thermosyphon heat transfer device with bubble driven rotor |
US20120211051A1 (en) * | 2011-02-22 | 2012-08-23 | Alexander Levin | Heat sink systems for large-size photovoltaic receiver |
US20130056178A1 (en) * | 2010-05-19 | 2013-03-07 | Nec Corporation | Ebullient cooling device |
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US9921004B2 (en) | 2014-09-15 | 2018-03-20 | Kelvin Thermal Technologies, Inc. | Polymer-based microfabricated thermal ground plane |
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WO2018172659A1 (en) * | 2017-03-13 | 2018-09-27 | Airbus Defence And Space Sas | Heat transfer device and spacecraft comprising such a heat transfer device |
US10278307B2 (en) * | 2017-08-16 | 2019-04-30 | Avary Holding (Shenzhen) Co., Limited | Cooling plate and method for manufacturing thereof |
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US10724804B2 (en) | 2016-11-08 | 2020-07-28 | Kelvin Thermal Technologies, Inc. | Method and device for spreading high heat fluxes in thermal ground planes |
US10731925B2 (en) | 2014-09-17 | 2020-08-04 | The Regents Of The University Of Colorado, A Body Corporate | Micropillar-enabled thermal ground plane |
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WO2021044142A1 (en) * | 2019-09-05 | 2021-03-11 | Bae Systems Plc | Thermal management apparatus |
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US11598594B2 (en) | 2014-09-17 | 2023-03-07 | The Regents Of The University Of Colorado | Micropillar-enabled thermal ground plane |
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Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613774A (en) * | 1969-10-08 | 1971-10-19 | Sanders Associates Inc | Unilateral heat transfer apparatus |
US4186559A (en) * | 1976-06-07 | 1980-02-05 | Decker Bert J | Heat pipe-turbine |
US5349831A (en) * | 1991-11-08 | 1994-09-27 | Hitachi, Ltd. | Apparatus for cooling heat generating members |
US5924482A (en) * | 1997-10-29 | 1999-07-20 | Motorola, Inc. | Multi-mode, two-phase cooling module |
US6019165A (en) * | 1998-05-18 | 2000-02-01 | Batchelder; John Samuel | Heat exchange apparatus |
US6396688B1 (en) * | 2000-03-29 | 2002-05-28 | Dell Products L.P. | Series fan speed control system |
US6408937B1 (en) * | 2000-11-15 | 2002-06-25 | Sanjay K. Roy | Active cold plate/heat sink |
US6490160B2 (en) * | 1999-07-15 | 2002-12-03 | Incep Technologies, Inc. | Vapor chamber with integrated pin array |
US6504720B2 (en) * | 2000-09-25 | 2003-01-07 | Kabushiki Kaisha Toshiba | Cooling unit for cooling heat generating component, circuit module including the cooling unit, and electronic apparatus mounted with the circuit module |
US6766817B2 (en) * | 2001-07-25 | 2004-07-27 | Tubarc Technologies, Llc | Fluid conduction utilizing a reversible unsaturated siphon with tubarc porosity action |
US6889756B1 (en) * | 2004-04-06 | 2005-05-10 | Epos Inc. | High efficiency isothermal heat sink |
-
2004
- 2004-10-28 US US10/977,860 patent/US20060090882A1/en not_active Abandoned
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613774A (en) * | 1969-10-08 | 1971-10-19 | Sanders Associates Inc | Unilateral heat transfer apparatus |
US4186559A (en) * | 1976-06-07 | 1980-02-05 | Decker Bert J | Heat pipe-turbine |
US5349831A (en) * | 1991-11-08 | 1994-09-27 | Hitachi, Ltd. | Apparatus for cooling heat generating members |
US5924482A (en) * | 1997-10-29 | 1999-07-20 | Motorola, Inc. | Multi-mode, two-phase cooling module |
US6019165A (en) * | 1998-05-18 | 2000-02-01 | Batchelder; John Samuel | Heat exchange apparatus |
US6490160B2 (en) * | 1999-07-15 | 2002-12-03 | Incep Technologies, Inc. | Vapor chamber with integrated pin array |
US6396688B1 (en) * | 2000-03-29 | 2002-05-28 | Dell Products L.P. | Series fan speed control system |
US6504720B2 (en) * | 2000-09-25 | 2003-01-07 | Kabushiki Kaisha Toshiba | Cooling unit for cooling heat generating component, circuit module including the cooling unit, and electronic apparatus mounted with the circuit module |
US6408937B1 (en) * | 2000-11-15 | 2002-06-25 | Sanjay K. Roy | Active cold plate/heat sink |
US6766817B2 (en) * | 2001-07-25 | 2004-07-27 | Tubarc Technologies, Llc | Fluid conduction utilizing a reversible unsaturated siphon with tubarc porosity action |
US6889756B1 (en) * | 2004-04-06 | 2005-05-10 | Epos Inc. | High efficiency isothermal heat sink |
Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7277285B2 (en) * | 2004-04-07 | 2007-10-02 | Delta Electronics, Inc. | Heat dissipation module |
US20050225943A1 (en) * | 2004-04-07 | 2005-10-13 | Delta Electronics, Inc. | Heat dissipation module |
US20090166855A1 (en) * | 2007-12-31 | 2009-07-02 | Chia-Pin Chiu | Cooling solutions for die-down integrated circuit packages |
US7755186B2 (en) | 2007-12-31 | 2010-07-13 | Intel Corporation | Cooling solutions for die-down integrated circuit packages |
US9494359B2 (en) | 2008-09-09 | 2016-11-15 | Koninklijke Philips N.V. | Horizontal finned heat exchanger for cryogenic recondensing refrigeration |
US20110160064A1 (en) * | 2008-09-09 | 2011-06-30 | Koninklijke Philips Electronics N.V. | Horizontal finned heat exchanger for cryogenic recondensing refrigeration |
US10571200B2 (en) | 2009-03-06 | 2020-02-25 | Kelvin Thermal Technologies, Inc. | Thermal ground plane |
US20110017431A1 (en) * | 2009-03-06 | 2011-01-27 | Y.C. Lee | Flexible thermal ground plane and manufacturing the same |
US10527358B2 (en) | 2009-03-06 | 2020-01-07 | Kelvin Thermal Technologies, Inc. | Thermal ground plane |
US11353269B2 (en) | 2009-03-06 | 2022-06-07 | Kelvin Thermal Technologies, Inc. | Thermal ground plane |
US9909814B2 (en) | 2009-03-06 | 2018-03-06 | Kelvin Thermal Technologies, Inc. | Flexible thermal ground plane and manufacturing the same |
US9651312B2 (en) | 2009-03-06 | 2017-05-16 | Kelvin Thermal Technologies, Inc. | Flexible thermal ground plane and manufacturing the same |
US9163883B2 (en) * | 2009-03-06 | 2015-10-20 | Kevlin Thermal Technologies, Inc. | Flexible thermal ground plane and manufacturing the same |
WO2010105125A3 (en) * | 2009-03-12 | 2010-11-04 | Molex Incorporated | Cooling device and electronic device comprising the cooling device |
US9240365B2 (en) | 2009-03-12 | 2016-01-19 | Molex, Llc | Cooling device and electronic device |
US20110041892A1 (en) * | 2009-08-21 | 2011-02-24 | Alexander Levin | Heat sink system for large-size photovoltaic receiver |
US20130056178A1 (en) * | 2010-05-19 | 2013-03-07 | Nec Corporation | Ebullient cooling device |
WO2011158008A3 (en) * | 2010-06-18 | 2012-05-18 | John Philip Roger Hammerbeck | A thermosyphon heat transfer device with bubble driven rotor |
US20120211051A1 (en) * | 2011-02-22 | 2012-08-23 | Alexander Levin | Heat sink systems for large-size photovoltaic receiver |
US20140202665A1 (en) * | 2013-01-22 | 2014-07-24 | Palo Alto Research Center Incorporated | Integrated thin film evaporation thermal spreader and planar heat pipe heat sink |
CN103943576A (en) * | 2013-01-22 | 2014-07-23 | 帕洛阿尔托研究中心公司 | Integrated thin film evaporation thermal spreader and planar heat pipe heat sink |
US9921004B2 (en) | 2014-09-15 | 2018-03-20 | Kelvin Thermal Technologies, Inc. | Polymer-based microfabricated thermal ground plane |
US11598594B2 (en) | 2014-09-17 | 2023-03-07 | The Regents Of The University Of Colorado | Micropillar-enabled thermal ground plane |
US10731925B2 (en) | 2014-09-17 | 2020-08-04 | The Regents Of The University Of Colorado, A Body Corporate | Micropillar-enabled thermal ground plane |
CN105890415A (en) * | 2016-05-26 | 2016-08-24 | 西安交通大学 | Integrated loop heat pipe cooling device with boiling pool |
US10724804B2 (en) | 2016-11-08 | 2020-07-28 | Kelvin Thermal Technologies, Inc. | Method and device for spreading high heat fluxes in thermal ground planes |
FR3063806A1 (en) * | 2017-03-13 | 2018-09-14 | Airbus Defence And Space Sas | THERMAL TRANSFER DEVICE AND SPATIAL DEVICE COMPRISING SUCH A THERMAL TRANSFER DEVICE |
WO2018172659A1 (en) * | 2017-03-13 | 2018-09-27 | Airbus Defence And Space Sas | Heat transfer device and spacecraft comprising such a heat transfer device |
US11067341B2 (en) | 2017-03-13 | 2021-07-20 | Airbus Defence And Space Sas | Heat transfer device and spacecraft comprising such a heat transfer device |
US10278307B2 (en) * | 2017-08-16 | 2019-04-30 | Avary Holding (Shenzhen) Co., Limited | Cooling plate and method for manufacturing thereof |
US11306983B2 (en) | 2018-06-11 | 2022-04-19 | The Regents Of The University Of Colorado, A Body Corporate | Single and multi-layer mesh structures for enhanced thermal transport |
US11898807B2 (en) | 2018-06-11 | 2024-02-13 | The Regents Of The University Of Colorado, A Body Corporate | Single and multi-layer mesh structures for enhanced thermal transport |
EP3803247A4 (en) * | 2018-06-11 | 2022-03-23 | The Regents of the University of Colorado, a body corporate | Single and multi-layer mesh structures for enhanced thermal transport |
WO2021044142A1 (en) * | 2019-09-05 | 2021-03-11 | Bae Systems Plc | Thermal management apparatus |
US11543190B2 (en) | 2019-09-05 | 2023-01-03 | Bae Systems Plc | Thermal management apparatus |
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