US20140166239A1 - Heat dissipating device using heat pipe - Google Patents
Heat dissipating device using heat pipe Download PDFInfo
- Publication number
- US20140166239A1 US20140166239A1 US14/190,763 US201414190763A US2014166239A1 US 20140166239 A1 US20140166239 A1 US 20140166239A1 US 201414190763 A US201414190763 A US 201414190763A US 2014166239 A1 US2014166239 A1 US 2014166239A1
- Authority
- US
- United States
- Prior art keywords
- heat
- pipe
- heat dissipating
- unit pipe
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/80—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with pins or wires
-
- 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
- F28D15/0266—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 separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/08—Fluid driving means, e.g. pumps, fans
-
- 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
- the present invention relates to a heat dissipating device, and more particularly, to a heat dissipating device using a heat pipe.
- an electronic component such as a central processing unit (CPU) of a computer, a chip set of a video card, a power transistor, and a light-emitting diode (LED) generates heat in operation.
- the electronic component When overheated, the electronic component may be malfunctioned or damaged. Accordingly, a heat dissipating device is required to prevent the electronic component from overheating.
- the heat dissipating device dissipates heat generated in a heat source such as an electronic component to the outside to prevent overheat of the heat source.
- the heat sink type heat dissipating device includes a heat absorbing part and a heat dissipating part.
- the heat absorbing part is disposed adjacent to the heat source to absorb heat generated from the heat source through thermal conduction.
- the heat dissipating part is provided with heat dissipating fins which are integrated with the heat absorbing part and dissipate the absorbed heat to the outside through heat exchange.
- heat dissipating efficiency is determined according to the distance between the heat absorbing part and the heat dissipating part, a heat dissipating area of the heat dissipating fins, and thermal conductivity.
- the conventional heat sink type heat dissipating device has difficulty maintaining a wide surface area of the heat dissipating fins considering that the size of the heat sink is required to get smaller and smaller according to the trend of integration and miniaturization of electronic components. Even if the surface area of the heat dissipating fins is enlarged, the distance between the heat absorbing part and the heat dissipating part becomes larger, thereby causing a limit to increasing heat dissipating efficiency.
- the conventional heat dissipating device should further include a fan rotating at a high speed to dissipate heat, and thus, causes problems of electric power consumption for driving the fan and a noise generated while the fan is being operated.
- a heat dissipating device which employs a heat pipe type thermal exchange mechanism to enhance heat dissipating efficiency, can secure an enlarged heat dissipating area regardless of the distance between a heat absorbing part and a heat dissipating part, can dissipate without a noise or with a low noise, and can secure high structural stability in thin thickness.
- a heat dissipating device including: a plurality of unit pipe loops, each unit pipe loop including: a heat absorbing part arranged adjacent to a heat source; and a heat dissipating part which is connected with the heat absorbing part and dissipates heat transferred from the heat absorbing part, a working fluid being to be provided inside the heat absorbing part and the heat dissipating part, the plurality of unit pipe loops being arranged radially with respect to the heat source.
- each unit pipe loop may be longer than a radial shortest straight line.
- the heat dissipating part may include: a first heat dissipating part which is connected with the heat absorbing part and is arranged radially to have a length longer than the radial shortest straight line; and a second heat dissipating part which is connected with the first heat dissipating part and forms an outer circumferential wall of each unit pipe loop.
- the heat dissipating part may further include at least one projection part between the first heat dissipating part and the second heat dissipating part.
- each unit pipe loop may connected with a neighboring unit pipe loop.
- the heat dissipating device may further include an auxiliary pipe loop which is disposed between the neighboring unit pipe loops and supports heat dissipation.
- the heat dissipating device may further include a heat dissipating member which is coupled to each unit pipe loop.
- the heat dissipating member may include a guide part which guides flow of the dissipated heat.
- the heat dissipating device may further include a mount which is disposed adjacent to the heat source, and to which the plurality of unit pipe loops are installed.
- the heat dissipating device may further include a holder which is coupled to the mount with the plurality of unit pipe loops being interposed therebetween.
- the heat dissipating device may further include a fan which is installed adjacent to the heat dissipating part.
- Each unit pipe loop may include a first pipe member and a second pipe member which have a first end part and a second end part, respectively.
- the first end part of the first pipe member may be coupled to the first end part of the second pipe member
- the second end part of the first pipe member may be coupled to the second end part of the second pipe member of the neighboring unit pipe loop.
- One of the end parts of the first pipe member and the end parts of the second pipe member, which are coupled each other, may be expanded in diameter.
- the end parts of the first pipe member and the second pipe member may be coupled each other by soldering.
- a heat dissipating device employs a heat pipe mechanism having high heat dissipating efficiency, to thereby have a variety of sizes and shapes in accordance with surrounding space of a heat source.
- the heat dissipating device according to the present invention employs a hollow pipe loop thinner in thickness than the conventional heat dissipating fins, its structural stability can be secured, thereby reducing consumption of material.
- the heat dissipating device employs pipe loops arranged radially with respect to a heat source to dissipate heat in multiple directions, thereby enhancing heat dissipating efficiency without a fan. Also, even in the case that the heat dissipating device includes the fan, high heat dissipating efficiency can be secured with a low rotational speed of the fan, thereby reducing noises.
- a first pipe member and a second pipe member are separately provided and then connected each other to form a unit pipe loop, thereby enhancing the productivity.
- the heat dissipating device provides the unit pipe loop in a variety of shapes such as spiral, serpentine and other waveforms, thereby enlarging a heat dissipating area of the unit pipe loop.
- FIG. 1 is an exploded perspective view illustrating a heat dissipating device according to a first exemplary embodiment of the present invention
- FIG. 2 is a perspective view illustrating unit pipe loops and auxiliary pipe loops of the heat dissipating device according to the first exemplary embodiment of the present invention
- FIG. 3 is a plane view illustrating the unit pipe loops and the auxiliary pipe loops of the heat dissipating device in FIG. 2 ;
- FIG. 4 is an exploded perspective view illustrating a heat dissipating device according to a second exemplary embodiment of the present invention
- FIG. 5 illustrates a main part of a heat dissipating device according to a third exemplary embodiment of the present invention
- FIG. 6 is a sectional view taken along a line VI-VI in FIG. 5 .
- FIG. 7 is a perspective view illustrating unit pipe loops of a heat dissipating device according to a fourth exemplary embodiment of the present invention.
- FIGS. 8 and 9 are exploded perspective views illustrating main parts of a heat dissipating device according to a fifth exemplary embodiment of the present invention.
- FIG. 10 is a perspective view illustrating a heat dissipating device according to a sixth exemplary embodiment of the present invention.
- FIG. 11 is an exploded perspective view illustrating a heat dissipating device according to a seventh exemplary embodiment of the present invention.
- FIG. 12 is a plane view illustrating a plurality of unit pipe loops of the heat dissipating device according to the seventh exemplary embodiment of the present invention.
- FIG. 13 illustrates the unit pipe loops of the heat dissipating device according to the seventh exemplary embodiment of the present invention.
- FIG. 1 is an exploded perspective view illustrating a heat dissipating device according to a first exemplary embodiment of the present invention
- FIG. 2 is a perspective view illustrating a unit pipe loop and an auxiliary pipe loop of the heat dissipating device according to the first exemplary embodiment of the present invention
- FIG. 3 is a plane view illustrating the unit pipe loop and the auxiliary pipe loop in FIG. 2 .
- the heat dissipating device includes a plurality of unit pipe loops 20 which are arranged radially to be adjacent to each other.
- the respective unit pipe loops 20 are disposed radially with respect to a heat source 1 (see FIG. 1 ). Accordingly, heat generated in the heat source 1 can be dissipated radially in multiple directions, thereby enhancing heat dissipating efficiency.
- the heat source 1 may include an electronic component such as a CPU, a chip set of a video card, a power transistor, and an LED.
- the size and the shape of the heat dissipating device may be varied according to the kind or the shape of the heat source 1 .
- each of the unit pipe loops 20 includes a heat absorbing part 21 and a heat dissipating part 23 .
- a working fluid 15 with bubbles 13 inside the heat absorbing part 21 and the heat dissipating part 23 are provided a working fluid 15 with bubbles 13 .
- the heat absorbing part 21 is disposed adjacent to the heat source 1 to absorb heat generated from the heat source 1 .
- the heat dissipating part 23 is extended from the heat absorbing part 21 to the outside of a radial structure to dissipate the heat transferred from the heat absorbing part 21 to the outside.
- Each of the unit pipe loops 20 is, desirably but not necessarily, made of metal such as copper and aluminum which have high thermal conductivity. Accordingly, heat from the heat source 1 can be conducted to the unit pipe loops 20 at a high speed and the volume of the bubbles 13 in the inside thereof can be changed quickly.
- Each of the unit pipe loops 20 may have the shape of an open loop, and may be connected with or separated from the neighboring unit pipe loops 20 . All or some of the plurality of unit pipe loops 20 may be connected with each other. In the case that all the unit pipe loops 20 connected with each other, the unit pipe loops 20 may have the shape of a single open loop or a single closed loop. In the case of the single open loop, opposite end parts thereof are sealed.
- the plurality of unit pipe loops 20 may be separated into two or more groups which perform independent heat dissipation.
- the unit pipe loops 20 which belong to each group may be connected each other.
- FIG. 2 illustrates three auxiliary pipe loops 25 which have different lengths beside one neighboring unit pipe loop 20 .
- the auxiliary pipe loops 25 support heat dissipation between the neighboring unit pipe loops 20 , thereby enhancing heat dissipating efficiency.
- the number and the length of the auxiliary pipe loops 25 may be changed variously according to the need of design.
- Each of the pipe loops forms a heat pipe which uses fluid dynamic pressure (FDP), for example, an oscillating capillary tube heat pipe.
- FDP fluid dynamic pressure
- FIG. 2 an operational principle of the oscillating capillary tube heat pipe as an example of the fluid dynamic pressure heat pipe will be briefly described by referring to FIG. 2 .
- the oscillating capillary tube heat pipe has a configuration in which the inside of a fine tube 11 is sealed after the working fluid 15 is provided into the inside of the fine tube 11 so that bubbles 13 are generated therein in a predetermined ratio.
- the heat pipe has a heat transfer mechanism which transfers heat as a latent heat by volume expansion and condensation of the bubbles 13 and the working fluid 15 .
- the bubbles 13 in the heat absorbing part 21 expand in volume.
- the bubbles 13 in the heat dissipating part 23 contract in volume as much as the bubbles 13 in the heat absorbing part 21 are expanded. Accordingly, pressure equilibrium inside the fine tube 11 collapses, and thus, flow accompanying oscillations of the working fluid 15 and the bubbles 13 is generated in the fine tube 11 . Accordingly, the heat pipe performs latent heat transfer by temperature change caused by the volume change of the bubbles 13 , thereby performing heat dissipation.
- the oscillating capillary tube heat pipe can be manufactured easily since it has no wick. Also, the oscillating capillary tube heat pipe has an advantage of less restriction in installation in comparison with a thermosyphon heat pipe having a configuration in which a heat dissipating part has to be disposed below a heat absorbing part. Also, the oscillating capillary tube heat pipe has a heat transfer method different from a heat sink type heat dissipating device and has no structural limitation, and accordingly, may have various sizes according to the kind or the shape of the heat source.
- the heat dissipating device may further include a mount 40 and a holder 50 for installation of the plurality of unit pipe loops 20 .
- a mount 40 On the upper surface of the mount 40 are formed install grooves 41 into which the unit pipe loops 20 are fitted.
- the unit pipe loops 20 can be fitted into the install grooves 41 and maintains the entire shape thereof.
- the heat source 1 may be coupled to a lower surface of the mount 40 .
- the holder 50 is coupled to the mount 40 , with the plurality of unit pipe loops 20 being interposed therebetween, to support the unit pipe loops 20 .
- On its lower surface are formed coupling grooves 51 , into which the unit pipe loops 20 are fitted.
- the unit pipe loops 20 can be stably fitted into the install grooves 41 of the mount 40 and the coupling grooves 51 of the holder 50 , thereby maintaining the entire shape thereof.
- the auxiliary pipe loop 25 may be coupled to the mount 40 and the holder 50 in a similar way.
- FIG. 4 illustrates a heat dissipating device according to a second exemplary embodiment of the present invention.
- a mount 140 has a cylindrical shape. On the outer circumference thereof are formed install grooves 141 , into which the unit pipe loops 20 are fitted.
- the heat source 1 ′ may be coupled to a lower surface or an upper surface of the mount 140 .
- the heat dissipating device in FIG. 4 is different in the shape of the unit pipe loops 20 and in the shape of the heat source 1 ′ as compared with the heat dissipating device in FIG. 1 . That is, the shape of the mount may be modified variously according to the shape of the unit pipe loops, and the kind or the shape of the heat source.
- the auxiliary pipe loop 25 may be coupled to the mount 140 .
- FIG. 5 illustrates a main part of a heat dissipating device according to a third exemplary embodiment of the present invention
- FIG. 6 is a sectional view taken along a line VI-VI in FIG. 5 .
- the heat dissipating device further includes a heat dissipating member 30 for heat dissipation, as compared with the preceding embodiments.
- the heat dissipating member 30 is coupled to each of the unit pipe loops 20 .
- the heat dissipating member 30 may include a groove 31 into which each unit pipe loop 20 is fitted.
- Each unit pipe loop 20 and the heat dissipating member 30 may be coupled in known various coupling methods.
- the heat dissipating member 30 may include a guide part 35 .
- the guide part 35 is protruded on one surface or opposite surfaces of the heat dissipating member 30 , to increase a heat dissipating area of the heat dissipating member 30 and to guide flow of dissipated heat.
- FIG. 6 illustrates the guide part 35 protruded on the upper surface of the heat dissipating member 30 as an example. In this case, flow of the heat may be guided along an arrow ‘B’ direction on the upper surface of the heat dissipating member 30 . Accordingly, a heat dissipating direction may be adjusted to be suitable for arrangement of an apparatus to which the heat dissipating device according to the present invention is applied.
- the heat dissipating member 30 may be installed between the unit pipe loops 20 , or in the auxiliary pipe loops 25 .
- FIG. 7 is an exploded perspective view illustrating a main part of a heat dissipating device according to a fourth exemplary embodiment of the present invention.
- each unit pipe loop 120 includes a first pipe member 121 and a second pipe member 125 .
- the first pipe member 121 has a downward bent shape and open opposite end parts, that is, a first end part 121 a and a second end part 121 b.
- the second pipe member 125 has an upward bent shape and open opposite end parts, that is, a first end part 125 a and a second end part 125 b.
- the second pipe member 125 is coupled to the first pipe member 121 to form an open loop.
- first end part 121 a of the first pipe member 121 is coupled to the first end part 125 a of the second pipe member 125 of the same unit pipe loop 120
- second end part 121 b of the first pipe member 121 is coupled to the second end part 125 b of the second pipe member 125 of the neighboring unit pipe loop 120 .
- the end parts 121 a and 121 b of the first pipe member 121 may be expanded widely to fit the end parts 125 a and 125 b of the second pipe member 125 by a blow process for easy sealing and coupling.
- an adhesive member 129 To the outer circumference of the end parts 125 a and 125 b of the second pipe member 125 may be provided an adhesive member 129 .
- the adhesive member 129 may be provided as a solder ring. Accordingly, the corresponding end parts of the first pipe member 121 and the second pipe member 125 may be coupled by soldering, to thereby form a unit pipe loop.
- FIGS. 8 and 9 illustrate main parts of a heat dissipating device according to a fifth exemplary embodiment of the present invention.
- a heat dissipating member 130 may be coupled to at least one of the first pipe member 121 and the second pipe member 125 .
- the heat dissipating member 130 may include a first member 131 which is coupled to the first pipe member 121 and a second member 135 which is coupled to the second pipe member 125 .
- the first member 131 and the second member 135 each have a groove 131 a and a groove 135 a, into which the first and the second pipe members 121 and 125 are fitted respectively. Further, the first and the second members 131 and 135 may respectively include a guide part (see 137 in FIG. 9 ) which increases a heat dissipating area and guides flow of dissipated heat.
- a heat dissipating device may further include a fan 60 , as compared with the preceding embodiments.
- the fan 60 is disposed adjacent to the heat dissipating part 23 to expedite dissipation of heat by the heat dissipating part 23 , thereby enhancing heat dissipating efficiency.
- the fan 60 rotates in a relatively low speed in comparison with the conventional heat dissipating device, thereby reducing a noise generated while the fan 60 rotates and reducing electric power consumption.
- FIG. 11 is an exploded perspective view illustrating a heat dissipating device according to a seventh exemplary embodiment of the present invention
- FIG. 12 is a plane view illustrating a plurality of unit pipe loops arranged radially in the heat dissipating device according to the seventh exemplary embodiment of the present invention
- FIG. 13 illustrates the unit pipe loops of the heat dissipating device according to the seventh exemplary embodiment of the present invention.
- the heat dissipating device includes a plurality of unit pipe loops 220 arranged radially to be adjacent to each other.
- the respective unit pipe loops 220 are disposed to be adjacent radially with respect to a heat source 1 ′′.
- Each of the unit pipe loops 220 includes a heat absorbing part 221 and a heat dissipating part 223 .
- the heat dissipating part 223 includes a first heat dissipating part 224 which is extended from the heat absorbing part 221 and disposed approximately horizontally, and a second heat dissipating part 225 which is extended from the first heat dissipating part 224 and forms an outer circumferential wall of the unit pipe loop 220 .
- the unit pipe loops 220 according to the present exemplary embodiment are different from the unit pipe loops according to the preceding exemplary embodiments (for example, refer to 20 in FIG. 1 ) in that the length of each of the unit pipe loops 220 is longer than the radial shortest straight line in a plane view.
- the unit pipe loops 220 may be formed in a helical shape, as shown in FIG. 12 .
- the unit pipe loops 220 may be formed in the shape of other curved lines such as serpentine, in a straight line making a predetermined angle with respect to the shortest straight line, or in other various waveforms.
- the part of the unit pipe loops 220 which is longer than the radial shortest straight line, includes the heat dissipating part 223 , but may further include the heat absorbing part 221 .
- the length of each unit pipe loop 220 in particular, the length of the heat dissipating part 223 can be provided relatively long, thereby increasing a heat dissipating area.
- the heat dissipating part 223 may further include at least one projection part 226 and 227 .
- the first projection part 226 is projected to be approximately parallel with the first heat dissipating part 224
- the second projection part 227 is projected to be approximately parallel with the second heat dissipating part 225 , but projecting directions of the projection parts 226 and 227 may be changed variously.
- the heat dissipating device may further include a mount 240 , a first pipe member 220 a and a second pipe member 220 b, a fan 260 , and other components (not shown), similar to the preceding exemplary embodiments.
- the heat dissipating device can be widely used to prevent overheat of an electronic component such as a CPU of a computer, a chip set of a video card, a power transistor, an LED.
Abstract
There is provided a heat dissipating device using a heat pipe. The heat dissipating device includes a plurality of unit pipe loops. Each unit pipe loop includes: a heat absorbing part arranged adjacent to a heat source; and a heat dissipating part which is connected with the heat absorbing part and dissipates heat transferred from the heat absorbing part. A working fluid is to be provided inside the heat absorbing part and the heat dissipating part. The plurality of unit pipe loops being arranged radially with respect to the heat source.
Description
- This application is a continuation of U.S. patent application Ser. No. 12/448,831, filed on Jul. 9, 2009 as U.S. National Phase entry of PCT/KR2008/003629, filed on Jun. 25, 2008, which claims priority of Korean Patent Application No. 10-2007-0100852, filed Oct. 8, 2007, and Korean Patent Application No. 10-2008-0054549, filed Jun. 11, 2008, each of which is incorporated herein by reference.
- The present invention relates to a heat dissipating device, and more particularly, to a heat dissipating device using a heat pipe.
- In general, an electronic component such as a central processing unit (CPU) of a computer, a chip set of a video card, a power transistor, and a light-emitting diode (LED) generates heat in operation. When overheated, the electronic component may be malfunctioned or damaged. Accordingly, a heat dissipating device is required to prevent the electronic component from overheating.
- The heat dissipating device dissipates heat generated in a heat source such as an electronic component to the outside to prevent overheat of the heat source.
- Conventionally, there is disclosed a heat sink type heat dissipating device. The heat sink type heat dissipating device includes a heat absorbing part and a heat dissipating part. The heat absorbing part is disposed adjacent to the heat source to absorb heat generated from the heat source through thermal conduction. The heat dissipating part is provided with heat dissipating fins which are integrated with the heat absorbing part and dissipate the absorbed heat to the outside through heat exchange.
- In the conventional heat sink type heat dissipating device having such a configuration, heat dissipating efficiency is determined according to the distance between the heat absorbing part and the heat dissipating part, a heat dissipating area of the heat dissipating fins, and thermal conductivity.
- However, the conventional heat sink type heat dissipating device has difficulty maintaining a wide surface area of the heat dissipating fins considering that the size of the heat sink is required to get smaller and smaller according to the trend of integration and miniaturization of electronic components. Even if the surface area of the heat dissipating fins is enlarged, the distance between the heat absorbing part and the heat dissipating part becomes larger, thereby causing a limit to increasing heat dissipating efficiency.
- Further, the conventional heat dissipating device should further include a fan rotating at a high speed to dissipate heat, and thus, causes problems of electric power consumption for driving the fan and a noise generated while the fan is being operated.
- Furthermore, in the conventional heat dissipating device, it is difficult to make the thickness of the heat dissipating fins thin in consideration of structural stability and thermal conductivity, thereby causing a high manufacturing cost.
- Accordingly, it is an aspect of the present invention to provide a heat dissipating device which employs a heat pipe type thermal exchange mechanism to enhance heat dissipating efficiency, can secure an enlarged heat dissipating area regardless of the distance between a heat absorbing part and a heat dissipating part, can dissipate without a noise or with a low noise, and can secure high structural stability in thin thickness.
- The foregoing and/or other aspects of the present invention can be achieved by providing a heat dissipating device including: a plurality of unit pipe loops, each unit pipe loop including: a heat absorbing part arranged adjacent to a heat source; and a heat dissipating part which is connected with the heat absorbing part and dissipates heat transferred from the heat absorbing part, a working fluid being to be provided inside the heat absorbing part and the heat dissipating part, the plurality of unit pipe loops being arranged radially with respect to the heat source.
- The length of each unit pipe loop may be longer than a radial shortest straight line.
- The heat dissipating part may include: a first heat dissipating part which is connected with the heat absorbing part and is arranged radially to have a length longer than the radial shortest straight line; and a second heat dissipating part which is connected with the first heat dissipating part and forms an outer circumferential wall of each unit pipe loop.
- The heat dissipating part may further include at least one projection part between the first heat dissipating part and the second heat dissipating part.
- At least an end part of each unit pipe loop may connected with a neighboring unit pipe loop.
- The heat dissipating device may further include an auxiliary pipe loop which is disposed between the neighboring unit pipe loops and supports heat dissipation.
- The heat dissipating device may further include a heat dissipating member which is coupled to each unit pipe loop.
- The heat dissipating member may include a guide part which guides flow of the dissipated heat.
- The heat dissipating device may further include a mount which is disposed adjacent to the heat source, and to which the plurality of unit pipe loops are installed.
- The heat dissipating device may further include a holder which is coupled to the mount with the plurality of unit pipe loops being interposed therebetween.
- The heat dissipating device may further include a fan which is installed adjacent to the heat dissipating part.
- Each unit pipe loop may include a first pipe member and a second pipe member which have a first end part and a second end part, respectively. Here, the first end part of the first pipe member may be coupled to the first end part of the second pipe member, and the second end part of the first pipe member may be coupled to the second end part of the second pipe member of the neighboring unit pipe loop.
- One of the end parts of the first pipe member and the end parts of the second pipe member, which are coupled each other, may be expanded in diameter.
- The end parts of the first pipe member and the second pipe member may be coupled each other by soldering.
- Additional aspects of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present invention.
- First, a heat dissipating device according to the present invention employs a heat pipe mechanism having high heat dissipating efficiency, to thereby have a variety of sizes and shapes in accordance with surrounding space of a heat source.
- Second, although the heat dissipating device according to the present invention employs a hollow pipe loop thinner in thickness than the conventional heat dissipating fins, its structural stability can be secured, thereby reducing consumption of material.
- Third, the heat dissipating device according to the present invention employs pipe loops arranged radially with respect to a heat source to dissipate heat in multiple directions, thereby enhancing heat dissipating efficiency without a fan. Also, even in the case that the heat dissipating device includes the fan, high heat dissipating efficiency can be secured with a low rotational speed of the fan, thereby reducing noises.
- Fourth, in the heat dissipating device according to the present invention, a first pipe member and a second pipe member are separately provided and then connected each other to form a unit pipe loop, thereby enhancing the productivity.
- Fifth, the heat dissipating device according to the present invention provides the unit pipe loop in a variety of shapes such as spiral, serpentine and other waveforms, thereby enlarging a heat dissipating area of the unit pipe loop.
- The above and/or other aspects of the present invention will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is an exploded perspective view illustrating a heat dissipating device according to a first exemplary embodiment of the present invention; -
FIG. 2 is a perspective view illustrating unit pipe loops and auxiliary pipe loops of the heat dissipating device according to the first exemplary embodiment of the present invention; -
FIG. 3 is a plane view illustrating the unit pipe loops and the auxiliary pipe loops of the heat dissipating device inFIG. 2 ; -
FIG. 4 is an exploded perspective view illustrating a heat dissipating device according to a second exemplary embodiment of the present invention; -
FIG. 5 illustrates a main part of a heat dissipating device according to a third exemplary embodiment of the present invention; -
FIG. 6 is a sectional view taken along a line VI-VI inFIG. 5 . -
FIG. 7 is a perspective view illustrating unit pipe loops of a heat dissipating device according to a fourth exemplary embodiment of the present invention; -
FIGS. 8 and 9 are exploded perspective views illustrating main parts of a heat dissipating device according to a fifth exemplary embodiment of the present invention; -
FIG. 10 is a perspective view illustrating a heat dissipating device according to a sixth exemplary embodiment of the present invention; -
FIG. 11 is an exploded perspective view illustrating a heat dissipating device according to a seventh exemplary embodiment of the present invention; -
FIG. 12 is a plane view illustrating a plurality of unit pipe loops of the heat dissipating device according to the seventh exemplary embodiment of the present invention; and -
FIG. 13 illustrates the unit pipe loops of the heat dissipating device according to the seventh exemplary embodiment of the present invention. - Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The exemplary embodiments are described below so as to explain the present invention by referring to the figures.
-
FIG. 1 is an exploded perspective view illustrating a heat dissipating device according to a first exemplary embodiment of the present invention;FIG. 2 is a perspective view illustrating a unit pipe loop and an auxiliary pipe loop of the heat dissipating device according to the first exemplary embodiment of the present invention; andFIG. 3 is a plane view illustrating the unit pipe loop and the auxiliary pipe loop inFIG. 2 . - Referring to
FIGS. 1 through 3 , the heat dissipating device according to the first exemplary embodiment of the present invention includes a plurality ofunit pipe loops 20 which are arranged radially to be adjacent to each other. The respectiveunit pipe loops 20 are disposed radially with respect to a heat source 1 (seeFIG. 1 ). Accordingly, heat generated in theheat source 1 can be dissipated radially in multiple directions, thereby enhancing heat dissipating efficiency. - Here, the
heat source 1 may include an electronic component such as a CPU, a chip set of a video card, a power transistor, and an LED. The size and the shape of the heat dissipating device may be varied according to the kind or the shape of theheat source 1. - As shown in
FIG. 3 , each of theunit pipe loops 20 includes aheat absorbing part 21 and aheat dissipating part 23. As shown inFIG. 2 , inside theheat absorbing part 21 and theheat dissipating part 23 are provided a workingfluid 15 withbubbles 13. Theheat absorbing part 21 is disposed adjacent to theheat source 1 to absorb heat generated from theheat source 1. Theheat dissipating part 23 is extended from theheat absorbing part 21 to the outside of a radial structure to dissipate the heat transferred from theheat absorbing part 21 to the outside. - Each of the
unit pipe loops 20 is, desirably but not necessarily, made of metal such as copper and aluminum which have high thermal conductivity. Accordingly, heat from theheat source 1 can be conducted to theunit pipe loops 20 at a high speed and the volume of thebubbles 13 in the inside thereof can be changed quickly. - Each of the
unit pipe loops 20 may have the shape of an open loop, and may be connected with or separated from the neighboringunit pipe loops 20. All or some of the plurality ofunit pipe loops 20 may be connected with each other. In the case that all theunit pipe loops 20 connected with each other, theunit pipe loops 20 may have the shape of a single open loop or a single closed loop. In the case of the single open loop, opposite end parts thereof are sealed. - The plurality of
unit pipe loops 20 may be separated into two or more groups which perform independent heat dissipation. Theunit pipe loops 20 which belong to each group may be connected each other. - Between the neighboring
unit pipe loops 20 may be provided anauxiliary pipe loop 25 which is spaced from theheat source 1.FIG. 2 illustrates threeauxiliary pipe loops 25 which have different lengths beside one neighboringunit pipe loop 20. Theauxiliary pipe loops 25 support heat dissipation between the neighboringunit pipe loops 20, thereby enhancing heat dissipating efficiency. The number and the length of theauxiliary pipe loops 25 may be changed variously according to the need of design. - Each of the pipe loops forms a heat pipe which uses fluid dynamic pressure (FDP), for example, an oscillating capillary tube heat pipe. Hereinafter, an operational principle of the oscillating capillary tube heat pipe as an example of the fluid dynamic pressure heat pipe will be briefly described by referring to
FIG. 2 . - As shown in
FIG. 2 , the oscillating capillary tube heat pipe has a configuration in which the inside of afine tube 11 is sealed after the workingfluid 15 is provided into the inside of thefine tube 11 so thatbubbles 13 are generated therein in a predetermined ratio. The heat pipe has a heat transfer mechanism which transfers heat as a latent heat by volume expansion and condensation of thebubbles 13 and the workingfluid 15. - While nucleate boiling takes place as much as the amount of heat absorbed in the
heat absorbing part 21, thebubbles 13 in theheat absorbing part 21 expand in volume. At this time, as thefine tube 11 maintains a uniform internal volume, thebubbles 13 in theheat dissipating part 23 contract in volume as much as thebubbles 13 in theheat absorbing part 21 are expanded. Accordingly, pressure equilibrium inside thefine tube 11 collapses, and thus, flow accompanying oscillations of the workingfluid 15 and thebubbles 13 is generated in thefine tube 11. Accordingly, the heat pipe performs latent heat transfer by temperature change caused by the volume change of thebubbles 13, thereby performing heat dissipation. - The oscillating capillary tube heat pipe can be manufactured easily since it has no wick. Also, the oscillating capillary tube heat pipe has an advantage of less restriction in installation in comparison with a thermosyphon heat pipe having a configuration in which a heat dissipating part has to be disposed below a heat absorbing part. Also, the oscillating capillary tube heat pipe has a heat transfer method different from a heat sink type heat dissipating device and has no structural limitation, and accordingly, may have various sizes according to the kind or the shape of the heat source.
- Referring to
FIG. 1 , the heat dissipating device according to the present exemplary embodiment may further include amount 40 and aholder 50 for installation of the plurality ofunit pipe loops 20. On the upper surface of themount 40 are formed installgrooves 41 into which theunit pipe loops 20 are fitted. Theunit pipe loops 20 can be fitted into the installgrooves 41 and maintains the entire shape thereof. Theheat source 1 may be coupled to a lower surface of themount 40. - The
holder 50 is coupled to themount 40, with the plurality ofunit pipe loops 20 being interposed therebetween, to support theunit pipe loops 20. On its lower surface are formedcoupling grooves 51, into which theunit pipe loops 20 are fitted. - As described above, the
unit pipe loops 20 can be stably fitted into the installgrooves 41 of themount 40 and thecoupling grooves 51 of theholder 50, thereby maintaining the entire shape thereof. - In the case that the
auxiliary pipe loop 25 is disposed between the neighboringunit pipe loops 20, theauxiliary pipe loop 25 may be coupled to themount 40 and theholder 50 in a similar way. -
FIG. 4 illustrates a heat dissipating device according to a second exemplary embodiment of the present invention. - Referring to
FIG. 4 , amount 140 according to the present embodiment has a cylindrical shape. On the outer circumference thereof are formed installgrooves 141, into which theunit pipe loops 20 are fitted. In this case, theheat source 1′ may be coupled to a lower surface or an upper surface of themount 140. The heat dissipating device inFIG. 4 is different in the shape of theunit pipe loops 20 and in the shape of theheat source 1′ as compared with the heat dissipating device inFIG. 1 . That is, the shape of the mount may be modified variously according to the shape of the unit pipe loops, and the kind or the shape of the heat source. In the case that theauxiliary pipe loop 25 is disposed between the neighboringunit pipe loops 20, theauxiliary pipe loops 25 may be coupled to themount 140. -
FIG. 5 illustrates a main part of a heat dissipating device according to a third exemplary embodiment of the present invention, andFIG. 6 is a sectional view taken along a line VI-VI inFIG. 5 . - Referring to
FIGS. 5 and 6 , the heat dissipating device according to the present embodiment further includes aheat dissipating member 30 for heat dissipation, as compared with the preceding embodiments. Theheat dissipating member 30 is coupled to each of theunit pipe loops 20. Theheat dissipating member 30 may include agroove 31 into which eachunit pipe loop 20 is fitted. Eachunit pipe loop 20 and theheat dissipating member 30 may be coupled in known various coupling methods. Theheat dissipating member 30 may include aguide part 35. Theguide part 35 is protruded on one surface or opposite surfaces of theheat dissipating member 30, to increase a heat dissipating area of theheat dissipating member 30 and to guide flow of dissipated heat.FIG. 6 illustrates theguide part 35 protruded on the upper surface of theheat dissipating member 30 as an example. In this case, flow of the heat may be guided along an arrow ‘B’ direction on the upper surface of theheat dissipating member 30. Accordingly, a heat dissipating direction may be adjusted to be suitable for arrangement of an apparatus to which the heat dissipating device according to the present invention is applied. Theheat dissipating member 30 may be installed between theunit pipe loops 20, or in theauxiliary pipe loops 25. -
FIG. 7 is an exploded perspective view illustrating a main part of a heat dissipating device according to a fourth exemplary embodiment of the present invention. - Referring to
FIG. 7 , eachunit pipe loop 120 includes afirst pipe member 121 and asecond pipe member 125. Thefirst pipe member 121 has a downward bent shape and open opposite end parts, that is, afirst end part 121 a and asecond end part 121 b. - The
second pipe member 125 has an upward bent shape and open opposite end parts, that is, afirst end part 125 a and asecond end part 125 b. Thesecond pipe member 125 is coupled to thefirst pipe member 121 to form an open loop. - More particularly, the
first end part 121 a of thefirst pipe member 121 is coupled to thefirst end part 125 a of thesecond pipe member 125 of the sameunit pipe loop 120, and thesecond end part 121 b of thefirst pipe member 121 is coupled to thesecond end part 125 b of thesecond pipe member 125 of the neighboringunit pipe loop 120. - When the
first end part 121 a of thefirst pipe member 121 and thefirst end part 125 a of thesecond pipe member 125 are coupled, and thesecond end part 121 b of the first pipe member and thesecond end part 125 b of thesecond pipe member 125 are coupled, theend parts first pipe member 121 may be expanded widely to fit theend parts second pipe member 125 by a blow process for easy sealing and coupling. - To the outer circumference of the
end parts second pipe member 125 may be provided anadhesive member 129. Theadhesive member 129, for example, may be provided as a solder ring. Accordingly, the corresponding end parts of thefirst pipe member 121 and thesecond pipe member 125 may be coupled by soldering, to thereby form a unit pipe loop. -
FIGS. 8 and 9 illustrate main parts of a heat dissipating device according to a fifth exemplary embodiment of the present invention. - Referring to
FIGS. 8 and 9 , aheat dissipating member 130 may be coupled to at least one of thefirst pipe member 121 and thesecond pipe member 125. Theheat dissipating member 130 may include afirst member 131 which is coupled to thefirst pipe member 121 and asecond member 135 which is coupled to thesecond pipe member 125. - The
first member 131 and thesecond member 135 each have agroove 131 a and agroove 135 a, into which the first and thesecond pipe members second members FIG. 9 ) which increases a heat dissipating area and guides flow of dissipated heat. - With this configuration, a manufacturing process of the
unit pipe loop 120 can be automated, thereby enhancing productivity. - Referring to
FIG. 10 , a heat dissipating device according to a sixth exemplary embodiment of the present invention may further include afan 60, as compared with the preceding embodiments. Thefan 60 is disposed adjacent to theheat dissipating part 23 to expedite dissipation of heat by theheat dissipating part 23, thereby enhancing heat dissipating efficiency. Thefan 60 rotates in a relatively low speed in comparison with the conventional heat dissipating device, thereby reducing a noise generated while thefan 60 rotates and reducing electric power consumption. -
FIG. 11 is an exploded perspective view illustrating a heat dissipating device according to a seventh exemplary embodiment of the present invention,FIG. 12 is a plane view illustrating a plurality of unit pipe loops arranged radially in the heat dissipating device according to the seventh exemplary embodiment of the present invention, andFIG. 13 illustrates the unit pipe loops of the heat dissipating device according to the seventh exemplary embodiment of the present invention. - Referring to
FIGS. 11 through 13 , the heat dissipating device according to the present exemplary embodiment includes a plurality ofunit pipe loops 220 arranged radially to be adjacent to each other. The respectiveunit pipe loops 220 are disposed to be adjacent radially with respect to aheat source 1″. Each of theunit pipe loops 220 includes aheat absorbing part 221 and aheat dissipating part 223. Theheat dissipating part 223 includes a firstheat dissipating part 224 which is extended from theheat absorbing part 221 and disposed approximately horizontally, and a secondheat dissipating part 225 which is extended from the firstheat dissipating part 224 and forms an outer circumferential wall of theunit pipe loop 220. - As shown in
FIG. 12 , theunit pipe loops 220 according to the present exemplary embodiment are different from the unit pipe loops according to the preceding exemplary embodiments (for example, refer to 20 inFIG. 1 ) in that the length of each of theunit pipe loops 220 is longer than the radial shortest straight line in a plane view. For this purpose, theunit pipe loops 220 may be formed in a helical shape, as shown inFIG. 12 . Alternatively, theunit pipe loops 220 may be formed in the shape of other curved lines such as serpentine, in a straight line making a predetermined angle with respect to the shortest straight line, or in other various waveforms. Here, the part of theunit pipe loops 220, which is longer than the radial shortest straight line, includes theheat dissipating part 223, but may further include theheat absorbing part 221. In this way, the length of eachunit pipe loop 220, in particular, the length of theheat dissipating part 223 can be provided relatively long, thereby increasing a heat dissipating area. - As shown in
FIG. 13 , theheat dissipating part 223 may further include at least oneprojection part first projection part 226 is projected to be approximately parallel with the firstheat dissipating part 224, and thesecond projection part 227 is projected to be approximately parallel with the secondheat dissipating part 225, but projecting directions of theprojection parts - The heat dissipating device according to the present exemplary embodiment may further include a
mount 240, afirst pipe member 220 a and asecond pipe member 220 b, afan 260, and other components (not shown), similar to the preceding exemplary embodiments. - Although a few exemplary embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
- The heat dissipating device according to the present invention can be widely used to prevent overheat of an electronic component such as a CPU of a computer, a chip set of a video card, a power transistor, an LED.
Claims (5)
1. A heat dissipating device comprising:
a plurality of unit pipe segments, and
a working fluid in each unit pipe segment;
each unit pipe segment being a capillary tube heat pipe without a wick and consisting of a heat absorbing pipe part adjacent to a heat source and a heat dissipating pipe part in communication with the heat absorbing pipe part;
the plurality of unit pipe segments being arranged to radially surround the heat source and being connected to each other to form a single loop; and
the working fluid present in the heat absorbing pipe part being capable of generating bubbles when exposed to heat from the heat source.
2. The heat dissipating device according to claim 1 , further comprising an auxiliary pipe segment which is disposed between the neighboring unit pipe segments and supports heat dissipation and
a heat dissipating member which is coupled to each unit pipe segment,
wherein the length of each unit pipe segment is longer than a shortest straight line in a radial direction between the heat source and the heat dissipating pipe part of the unit pipe segment,
wherein the heat dissipating pipe part comprises: a first heat dissipating part which is connected with the heat absorbing pipe part and is arranged radially to have a length longer than shortest straight line in a radial direction between the heat source and the heat dissipating pipe part of the unit pipe segment; a second heat dissipating part which is connected with the first heat dissipating part and forms an outer circumferential perimeter of each unit pipe segment; and at least one projection part between the first heat dissipating part and the second heat dissipating part,
wherein at least one end part of each unit pipe segment is connected with a neighboring unit pipe segment,
wherein the heat dissipating member comprises a guide part which guides flow of the dissipated heat.
3. The heat dissipating device according to claim 1 , further comprising a holder,
the plurality of unit pipe segments being between the holder and the mount and
a fan which is installed adjacent to the heat dissipating pipe part.
4. The heat dissipating device according to claim 1 , wherein the heat absorbing pipe part or the heat dissipating pipe part of each unit pipe segment comprises a first pipe member and a second pipe member which have a first end part and a second end part, respectively, and wherein the first end part of the first pipe member is coupled to the first end part of the second pipe member, and the second end part of the first pipe member is coupled to the second end part of the second pipe member of the neighboring unit pipe segment,
wherein one of the end parts of the first pipe member and the end parts of the second pipe member, which are coupled each other, are expanded in diameter,
wherein the end parts of the first pipe member and the second pipe member are coupled each other by soldering.
5. The heat dissipating device according to claim 1 , wherein the plurality of unit pipe segments is connected with each other to form a single closed loop.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/190,763 US20140166239A1 (en) | 2007-10-08 | 2014-02-26 | Heat dissipating device using heat pipe |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070100852A KR100895694B1 (en) | 2007-10-08 | 2007-10-08 | Heat pipe type dissipating device |
KR10-2007-0100852 | 2007-10-08 | ||
KR1020080054549A KR20090128684A (en) | 2008-06-11 | 2008-06-11 | Heat pipe type dissipating device |
KR10-2008-0054549 | 2008-06-11 | ||
PCT/KR2008/003629 WO2009048218A1 (en) | 2007-10-08 | 2008-06-25 | Heat dissipating device using heat pipe |
US44883109A | 2009-07-09 | 2009-07-09 | |
US14/190,763 US20140166239A1 (en) | 2007-10-08 | 2014-02-26 | Heat dissipating device using heat pipe |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2008/003629 Continuation WO2009048218A1 (en) | 2007-10-08 | 2008-06-25 | Heat dissipating device using heat pipe |
US12/448,831 Continuation US20100212865A1 (en) | 2007-10-08 | 2008-06-25 | Heat dissipating device using heat pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140166239A1 true US20140166239A1 (en) | 2014-06-19 |
Family
ID=40549344
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/448,831 Abandoned US20100212865A1 (en) | 2007-10-08 | 2008-06-25 | Heat dissipating device using heat pipe |
US14/190,763 Abandoned US20140166239A1 (en) | 2007-10-08 | 2014-02-26 | Heat dissipating device using heat pipe |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/448,831 Abandoned US20100212865A1 (en) | 2007-10-08 | 2008-06-25 | Heat dissipating device using heat pipe |
Country Status (4)
Country | Link |
---|---|
US (2) | US20100212865A1 (en) |
EP (1) | EP2198681A4 (en) |
JP (1) | JP2010516996A (en) |
WO (1) | WO2009048218A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101070842B1 (en) * | 2009-06-11 | 2011-10-06 | 주식회사 자온지 | Heat-dissipating device and electronic apparatus having the same |
KR101084349B1 (en) * | 2009-10-21 | 2011-11-17 | 주식회사 자온지 | Manufacturing method for heat pipe type dissipating device |
KR101081550B1 (en) * | 2010-02-25 | 2011-11-08 | 주식회사 자온지 | LED lighting apparatus |
US20130068446A1 (en) * | 2010-06-22 | 2013-03-21 | Young Dong Tech Co., Ltd. | Heat sink apparatus for exothermic element |
KR101081548B1 (en) | 2010-09-06 | 2011-11-08 | 주식회사 자온지 | Led lighting apparatus and streetlight having the same |
KR101215598B1 (en) * | 2011-08-08 | 2012-12-26 | 아이스파이프 주식회사 | Led lighting apparatus |
KR20150009344A (en) * | 2013-07-16 | 2015-01-26 | 엘에스산전 주식회사 | Inverter Cabinet with A Heat Sink Bonded with Pulsating Heat Pipe Typed Fins |
KR20150139139A (en) * | 2014-06-02 | 2015-12-11 | 아이스파이프 주식회사 | Led lighting apparatus |
EP3163241A1 (en) * | 2015-10-26 | 2017-05-03 | ABB Technology Oy | A system for cooling of electronic equipment |
US9750160B2 (en) * | 2016-01-20 | 2017-08-29 | Raytheon Company | Multi-level oscillating heat pipe implementation in an electronic circuit card module |
US11051428B2 (en) * | 2019-10-31 | 2021-06-29 | Hamilton Sunstrand Corporation | Oscillating heat pipe integrated thermal management system for power electronics |
DE102021204756A1 (en) * | 2021-05-11 | 2022-11-17 | Robert Bosch Gesellschaft mit beschränkter Haftung | cooler |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4921041A (en) * | 1987-06-23 | 1990-05-01 | Actronics Kabushiki Kaisha | Structure of a heat pipe |
JPH0423456A (en) * | 1990-05-18 | 1992-01-27 | Toshiba Corp | Cooling device of component |
US6269865B1 (en) * | 1997-08-22 | 2001-08-07 | Bin-Juine Huang | Network-type heat pipe device |
US20060144567A1 (en) * | 2004-12-31 | 2006-07-06 | Foxconn Technology Co., Ltd. | Pulsating heat transfer apparatus |
US20080117637A1 (en) * | 2006-11-17 | 2008-05-22 | Foxconn Technology Co., Ltd. | Led lamp cooling apparatus with pulsating heat pipe |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4120083A (en) * | 1976-12-06 | 1978-10-17 | Zap-Lok Systems International, Inc. | Method of pipe joining |
US4421161A (en) * | 1982-05-06 | 1983-12-20 | Burroughs Corporation | Heat exchanger for integrated circuit packages |
JPH0486486A (en) * | 1990-07-30 | 1992-03-19 | Tech Res & Dev Inst Of Japan Def Agency | Temperature conditioning device for fabric product |
US5921315A (en) * | 1995-06-07 | 1999-07-13 | Heat Pipe Technology, Inc. | Three-dimensional heat pipe |
JP2000283670A (en) * | 1999-03-30 | 2000-10-13 | Furukawa Electric Co Ltd:The | Heat sink |
US6789611B1 (en) * | 2000-01-04 | 2004-09-14 | Jia Hao Li | Bubble cycling heat exchanger |
US20030111217A1 (en) * | 2000-04-10 | 2003-06-19 | Li Jia Hao | Bubble cycling heat exchanger system |
US6315033B1 (en) * | 2000-05-22 | 2001-11-13 | Jia Hao Li | Heat dissipating conduit |
JP4769386B2 (en) * | 2000-08-09 | 2011-09-07 | ティーエス ヒートロニクス 株式会社 | Heat diffusion plate |
TW511891U (en) * | 2002-03-13 | 2002-11-21 | Hon Hai Prec Ind Co Ltd | A heat dissipating device |
US20050180109A1 (en) * | 2002-04-16 | 2005-08-18 | Yoshiro Miyazaki | Self-excited vibration heat pipe and computer with the heat pipe |
KR20040091171A (en) * | 2003-04-19 | 2004-10-28 | (주)프라임테크 | A method and apparatus for cooling type heat pipe |
CN2727964Y (en) * | 2004-09-17 | 2005-09-21 | 鸿富锦精密工业(深圳)有限公司 | Radiator |
KR100766109B1 (en) * | 2004-10-20 | 2007-10-11 | 엘지전자 주식회사 | A heat radiating apparatus |
WO2006086738A1 (en) * | 2005-02-11 | 2006-08-17 | Heat Technnology, Inc. | Heat sink having directive heat elements |
TWM278213U (en) * | 2005-02-24 | 2005-10-11 | Comptake Technology Co Ltd | Heat dissipation device |
JP4550664B2 (en) * | 2005-03-02 | 2010-09-22 | 古河電気工業株式会社 | Heat sink with heat pipe |
WO2006109929A1 (en) * | 2005-04-11 | 2006-10-19 | Zalman Tech Co., Ltd. | Apparatus for cooling computer parts and method of manufacturing the same |
KR101327722B1 (en) * | 2005-07-20 | 2013-11-11 | 엘지전자 주식회사 | Heat radiating apparatus for electronic device |
US20070175614A1 (en) * | 2006-01-30 | 2007-08-02 | Jaffe Limited | Loop heat exchange apparatus |
US7654310B2 (en) * | 2006-01-30 | 2010-02-02 | Jaffe Limited | Loop heat pipe |
US7347250B2 (en) * | 2006-01-30 | 2008-03-25 | Jaffe Limited | Loop heat pipe |
US7317616B2 (en) * | 2006-01-30 | 2008-01-08 | Jaffe Limited | Mechanism for connecting loop heat pipe and method therefor |
CN101203117B (en) * | 2006-12-13 | 2010-08-25 | 富准精密工业(深圳)有限公司 | Heat radiating device |
US20090139702A1 (en) * | 2007-11-30 | 2009-06-04 | Gordon Hogan | Heat exchanger |
CN101730444B (en) * | 2008-10-16 | 2013-04-24 | 富准精密工业(深圳)有限公司 | Heat radiation device |
-
2008
- 2008-06-25 US US12/448,831 patent/US20100212865A1/en not_active Abandoned
- 2008-06-25 EP EP08766588.1A patent/EP2198681A4/en not_active Withdrawn
- 2008-06-25 JP JP2009548175A patent/JP2010516996A/en active Pending
- 2008-06-25 WO PCT/KR2008/003629 patent/WO2009048218A1/en active Application Filing
-
2014
- 2014-02-26 US US14/190,763 patent/US20140166239A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4921041A (en) * | 1987-06-23 | 1990-05-01 | Actronics Kabushiki Kaisha | Structure of a heat pipe |
JPH0423456A (en) * | 1990-05-18 | 1992-01-27 | Toshiba Corp | Cooling device of component |
US6269865B1 (en) * | 1997-08-22 | 2001-08-07 | Bin-Juine Huang | Network-type heat pipe device |
US20060144567A1 (en) * | 2004-12-31 | 2006-07-06 | Foxconn Technology Co., Ltd. | Pulsating heat transfer apparatus |
US20080117637A1 (en) * | 2006-11-17 | 2008-05-22 | Foxconn Technology Co., Ltd. | Led lamp cooling apparatus with pulsating heat pipe |
Non-Patent Citations (1)
Title |
---|
English Translation of JPH04023456A * |
Also Published As
Publication number | Publication date |
---|---|
EP2198681A4 (en) | 2017-05-03 |
WO2009048218A1 (en) | 2009-04-16 |
EP2198681A1 (en) | 2010-06-23 |
US20100212865A1 (en) | 2010-08-26 |
JP2010516996A (en) | 2010-05-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20140166239A1 (en) | Heat dissipating device using heat pipe | |
US7819174B2 (en) | Heat pipe cooling system and thermal connector thereof | |
US7965512B2 (en) | Heat-dissipation module and electronic device using the same | |
KR101070842B1 (en) | Heat-dissipating device and electronic apparatus having the same | |
RU2348963C1 (en) | Device for computer items cooling and related production method | |
US8879261B2 (en) | Heat-dissipating device for electronic apparatus | |
JP2004111968A (en) | Heat sink with heat pipe directly brought into contact with component | |
US20040052051A1 (en) | Heat sink with heat pipe and base fins | |
US20080030688A1 (en) | Projection apparatus | |
US20140376248A1 (en) | Led lighting device and vehicle headlight having same | |
US9905495B2 (en) | Thermal module | |
US8985195B2 (en) | Condensing device and thermal module using same | |
KR100895694B1 (en) | Heat pipe type dissipating device | |
JP2004111969A (en) | Heat sink with angled heat pipe | |
CN102332437A (en) | Heat pipe radiating device and installation method thereof | |
KR101023823B1 (en) | Heat pipe type dissipating device | |
US7443675B2 (en) | Heat pipe with guided internal grooves and heat dissipation module incorporating the same | |
EP3518072A1 (en) | Heat transferring module | |
WO2009088135A1 (en) | Heat dissipating device using heat pipe | |
US11953272B2 (en) | Cycling heat dissipation module | |
KR20090128684A (en) | Heat pipe type dissipating device | |
KR20090109616A (en) | Dissipating device of electronic element and memory module employing the dissipating device | |
KR101180494B1 (en) | Heat-dissipating device for graphic card | |
JP2008089253A (en) | Heat sink | |
KR100488104B1 (en) | Plate Radiator Structure of CPU Cooling Module |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |