AU2020100615A4 - Heat sink - Google Patents

Heat sink Download PDF

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Publication number
AU2020100615A4
AU2020100615A4 AU2020100615A AU2020100615A AU2020100615A4 AU 2020100615 A4 AU2020100615 A4 AU 2020100615A4 AU 2020100615 A AU2020100615 A AU 2020100615A AU 2020100615 A AU2020100615 A AU 2020100615A AU 2020100615 A4 AU2020100615 A4 AU 2020100615A4
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AU
Australia
Prior art keywords
fin
various embodiments
raised border
plate
fin body
Prior art date
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AU2020100615A
Inventor
Chengyu Cheng
YiHsiang HUNG
FuMei WANG
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Razer Asia Pacific Pte Ltd
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Razer Asia Pacific Pte Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Razer Asia Pacific Pte Ltd filed Critical Razer Asia Pacific Pte Ltd
Priority to AU2020100615A priority Critical patent/AU2020100615A4/en
Application granted granted Critical
Publication of AU2020100615A4 publication Critical patent/AU2020100615A4/en
Priority to DE202021101747.3U priority patent/DE202021101747U1/en
Priority to TW110204028U priority patent/TWM614491U/en
Priority to CN202120821019.8U priority patent/CN215121666U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • 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
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device
    • H01L23/3672—Foil-like cooling fins or heat sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F28D2021/0029—Heat sinks
    • 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
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

Abstract A heat sink including a plurality of fins assembled together, each fin including a continuous solid elongate plate-like fin body having a first surface and an opposite second surface; first and second raised borders along first and second longitudinal sides of the first surface respectively; and a secondary plate-like appendage disposed within a space defined by the elongate plate-like fin body, the first raised border and the second raised border, wherein a first fin is assembled to a second fin with the first and second raised borders of the first fin engaged with first and second longitudinal sides of the second surface of the second fin in a manner so as to form a hollow longitudinal tunnel enclosed by the first fin and the second fin, wherein the secondary plate-like appendage of the first fin is oriented to longitudinally divide at least a portion of the hollow longitudinal tunnel. 110a, 110 110b, 110 - -: .: : .: : 1 12 0 152 -- - a.. .. . . 120b. . .. . .. . . FIG.. .... 1B. .

Description

HEAT SINK
Technical Field [0001] Various embodiments generally relate to a heat sink.
Background [0002] Typically, heat sink is the key part of a thermal module for a processor, for example in a laptop or a desktop or a computing device. The heat sink generally has a plurality of fins. The role of the plurality of fins in the heat sink is to increase heat exchange area. The fin is usually shaped in a manner so as to be easy to manufacture. However, such shapes would generally limit the heat exchange area. A common way to increase the size of the fins. However, doing so would cause high flow resistance of air and generate noise.
[0003] Accordingly, there is a need for an improved heat sink which may increase the heat exchange area with a lower noise generation.
Summary [0004] According to various embodiments, there is provided a heat sink. The heat sink may include a plurality of fins assembled together. Each of the plurality of fins may include a continuous solid elongate plate-like fin body having a first surface and a second surface opposite the first surface. Each of the plurality of fins may include a first raised border along a first longitudinal side of the first surface of the elongate plate-like fin body. Each of the plurality of fins may include a second raised border along a second longitudinal side of the first surface of the elongate plate-like fin body. Each of the plurality of fins may include a secondary plate-like appendage disposed within a space defined by the elongate plate-like fin body, the first raised border and the second raised border. A first fin of the plurality of fins may be assembled to a second fin of the plurality of fins with the first raised border at the first longitudinal side of the first surface of the first fin and the second raised border at the second longitudinal side of the first surface of the first fin respectively engaged with first and second longitudinal sides of the second surface of the second fin in a manner so as to form a hollow longitudinal tunnel enclosed by the first fin and the second fin. The secondary plate-like appendage of the first fin may be oriented to longitudinally divide at least a portion of the hollow longitudinal tunnel.
Brief description of the drawings [0005] In the drawings, like reference characters generally refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the invention. In the following description, various embodiments are described with reference to the following drawings, in which:
FIG. 1A shows a schematic diagram of a heat sink according to various embodiments;
FIG. IB shows a schematic diagram of a fin of the heat sink of FIG. 1A according to various embodiments;
FIG. 2A shows a heat sink according to various embodiments;
FIG. 2B shows a side perspective view of a fin of the heat sink of FIG. 2A according to various embodiments;
FIG. 2C shows a front perspective view of the fin of the heat sink of FIG. 2A according to various embodiments;
FIG. 3 shows a side view of a variant of a fin for a heat sink according to various embodiments;
FIG. 4A shows a heat sink according to various embodiments;
FIG. 4B shows a side perspective view of a fin of the heat sink of FIG. 4A according to various embodiments;
FIG. 4C shows a back perspective view of the fin of the heat sink of FIG. 4A according to various embodiments; and
FIG. 5 shows a side view of a variant of a fin for a heat sink according to various embodiments.
Detailed description [0006] Embodiments described below in the context of the apparatus are analogously valid for the respective methods, and vice versa. Furthermore, it will be understood that the embodiments described below may be combined, for example, a part of one embodiment may be combined with a part of another embodiment.
[0007] It should be understood that the terms “on”, “over”, “top”, “bottom”, “down”, “side”, “back”, “left”, “right”, “front”, “lateral”, “side”, “up”, “down” etc., when used in the following description are used for convenience and to aid understanding of relative positions or directions, and not intended to limit the orientation of any device, or structure or any part of any device or structure. In addition, the singular terms “a”, “an”, and “the” include plural references unless context clearly indicates otherwise. Similarly, the word “or” is intended to include “and” unless the context clearly indicates otherwise.
[0008] Various embodiments generally relate to a heat sink. According to various embodiments, the heat sink may be a passive heat exchanger for transferring heat generated by an electronic device to the air so as to dissipate the heat away from the electronic device. According to various embodiments, the heat sink may be configured so as to improve the heat dissipation ability of the heat sink. According to various embodiments, the heat sink may include a plurality of fins which the air flows through such that thermal energy is transferred from the plurality of fins to the air flowing therethrough.
[0009] Typically, in a laptop or a mobile computing device, an internal space within a housing is generally small and confined. In order to have enough heat exchange area for the heat sink to dissipate heat, the fins are generally configured to be narrow and long. However, the side effect of narrow and long fins is that the flow resistance is high, which is not good for airflow along the fins and noise is generated.
[00010] Various embodiments seek to provide a heat sink which is configured to increase heat exchange area and to create turbulent airflow so as to increase heat transfer performance and reduce the noise generated. According to various embodiments, the heat sink may include a multi-fold fin. The multi-fold fin may add one or more folds to increase the heat exchange area and to create the turbulent airflow. Accordingly, the multi-fold fin may increase the heat transfer performance and reduce the noise generated. According to various embodiments, the additional fold of the multi-fold fin may create an additional leading edge of the fin (for example, about 50% or more) cutting the airflow and an additional heat exchange area (for example, about 35% or more) along which the airflow passes. Accordingly, the additional fold may add a lot of heat exchange area and may reduce the system noise produced by airflow through the heat sink.
[00011] According to various embodiments, the multi-fold fin may be easy to manufacture and flexible to configure. According to various embodiments, the additional fold may be folded from top, front, bottom, or read side of the fin. According to various embodiments, the additional fold may be configured to include additional features which are helpful to hydrodynamic performance.
[00012] FIG. 1A shows a schematic diagram of a heat sink 100 according to various embodiments. FIG. IB shows a schematic diagram of a fin 110 of the heat sink 100 of FIG. 1A according to various embodiments. According to various embodiments, the heat sink 100 may include a plurality of fins 110 (or two or more fins 110). According to various embodiments, the plurality of fins 110 may be assembled together to form the heat sink 100. According to various embodiments, the plurality of fins 110 may be assembled together via stacking, joining, connecting, or fitting the plurality of fins 110 to each other. According to various embodiments, the plurality of fins 110 may be parallel to each other.
[00013] According to various embodiments, each of the plurality of fins 110 may include a continuous solid elongate plate-like fin body 120 having a first surface 122 and a second surface 124 opposite the first surface 122. Accordingly, the plate-like fin body 120 may be of a long and thin shape. According to various embodiments, the elongate plate-like fin body 120 may be a single piece of solid extending continuously in a longitudinal direction free of any holes or gaps or breaks anywhere along the elongate plate-like fin body 120. Accordingly, the elongate plate-like fin body 120 may be extending uninterrupted along its length. According to various embodiments, each of the first surface 122 and the second surface 124 may be a continuous surface extending along a length of the elongate plate-like fin body 120. According to various embodiments, the first surface 122 of the elongate platelike fin body 120 may be facing a first direction and the second surface 124 of the elongate plate-like fin body 120 may be facing a second direction, which is opposite the first direction. Hence, the first surface 122 and the second surface 124 may be facing opposite directions. According to various embodiments, each of the first surface 122 and the second surface 124 may be of a rectangular shape, a rounded rectangular shape, a race-track shape, an oblong shape, or any suitable shape.
[00014] According to various embodiments, each of the plurality of fins 110 may include a first raised border 130 along a first longitudinal side 126 of the first surface 122 of the elongate plate-like fin body 120. According to various embodiments, the first raised border 130 may protrude perpendicularly from the first surface 122 of the elongate plate-like fin body 120. According to various embodiments, the first raised border 130 may be an upright protrusion protruding from the first surface 122 of the elongate plate-like fin body 120. Accordingly, the first raised border 130 may be protruding in the first direction which the first surface 122 is facing. Further, the first raised border 130 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the first longitudinal side 126 of the first surface 122 of the elongate plate-like fin body 120.
[00015] According to various embodiments, each of the plurality of fins 110 may include a second raised border 140 along a second longitudinal side 128 of the first surface 122 of the elongate plate-like fin body 120. According to various embodiments, the second raised border 140 may protrude perpendicularly from the first surface 122 of the elongate platelike fin body 120. According to various embodiments, the second raised border 140 may be an upright protrusion protruding from the first surface 122 of the elongate plate-like fin body 120. Accordingly, the second raised border 140 may be protruding in the first direction which the first surface 122 is facing. Further, the second raised border 140 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the second longitudinal side 128 of the first surface 122 of the elongate plate-like fin body 120.
[00016] According to various embodiments, the first longitudinal side 126 and the second longitudinal side 128 of the first surface 122 of the elongate plate-like fin body 120 may be two longitudinally extending long sides of the first surface 122 of the elongate plate-like fin body 120. According to various embodiments, with the first raised border 130 along the first longitudinal side 126 of the first surface 122 of the elongate plate-like fin body 120 and the second raised border 140 along the second longitudinal side 128 of the first surface 122 of the elongate plate-like fin body 120, the first raised border 130 and the second raised border 140 may form side walls of a channel and the first surface 122 of the elongate platelike fin body 120 may form a channel bed of the channel. Accordingly, the continuous solid elongate plate-like fin body 120, the first raised border 130 and the second raised border 140 may resemble a trough or a gutter, which may define the channel.
[00017] According to various embodiments, each of the plurality of fins 110 may include a secondary plate-like appendage 150 disposed within a space 152 (or the channel) defined by the elongate plate-like fin body 120, the first raised border 130 and the second raised border 140. According to various embodiments, the secondary plate-like appendage 150 may be an auxiliary part of each fin 110. According to various embodiments, the secondary plate-like appendage 150 may include a plate-like extension from any one or a combination of the elongate plate-like fin body 120, the first raised border 130, and the second raised border 140, whereby the plate-like extension lies in the space 152 (or the channel) defined by the elongate plate-like fin body 120, the first raised border 130 and the second raised border 140. According to various embodiments, the secondary plate-like appendage 150 may extend from any one or a combination of the elongate plate-like fin body 120, the first raised border 130, and the second raised border 140. According to various embodiments, the secondary plate-like appendage 150 may extend into the space 152 (or the channel) defined by the elongate plate-like fin body 120, the first raised border 130 and the second raised border 140. For example, the secondary plate-like appendage 150 may extend from an upper edge 132 of the first raised border 130, an upper edge 142 of the second raised border 140, the first surface 122 at a first longitudinal end portion 120a of the elongate platelike fin body 120, or the first surface 122 at a second longitudinal end portion 120b of the elongate plate-like fin body 120.
[00018] According to various embodiments, the secondary plate-like appendage 150 may be joined, attached, or connected to the elongate plate-like fin body 120, the first raised border 130, or the second raised border 140 in a manner so as to be extending into the space 152 (or the channel) defined by the elongate plate-like fin body 120, the first raised border 130 and the second raised border 140. According to various embodiments, the secondary plate-like appendage 150 may be integrally formed with the elongate plate-like fin body 120, the first raised border 130, or the second raised border 140 such that the secondary platelike appendage 150 may be folded so as to extend into the space 152 (or the channel) defined by the elongate plate-like fin body 120, the first raised border 130 and the second raised border 140.
[00019] According to various embodiments, a first fin 110a of the plurality of fins 110 may be assembled to a second fin 110b of the plurality of fins 110 with the first raised border 130 at the first longitudinal side 126 of the first surface 122 of the first fin 110a and the second raised border 140 at the second longitudinal side 128 of the first surface 122 of the first fin 110a respectively engaged with first and second longitudinal sides of the second surface 124 of the second fin 110b in a manner so as to form a hollow longitudinal tunnel
160 enclosed by the first fin 110a and the second fin 110b. According to various embodiments, the first and the second longitudinal sides of the second surface 124 of the elongate plate-like fin body 120 may be two longitudinally extending long sides of the second surface 124 of the elongate plate-like fin body 120. According to various embodiments, the heat sink 100 may be formed by assembling the first fin 110a to the second fin 110b with the first surface 122 of the first fin 110a facing the second surface 124 of the second fin 110b. According to various embodiments, the first fin 110a and the second fin 110b may be aligned such that the first raised border 130 at the first longitudinal side 126 of the first surface 122 of the first fin 110a is engaged with the first longitudinal side of the second surface 124 of the second fin 110b and the second raised border 140 at the second longitudinal side 128 of the first surface 122 of the first fin 110a is engaged with the second longitudinal side of the second surface 124 of the second fin 110b. According to various embodiments, the hollow longitudinal tunnel 160 may be defined by the first surface 122 of the first fin 110a, the first raised border 130 of the first fin 110a, the second raised border 140 of the first fin 110a, and the second surface 124 of the second fin 110b. According to various embodiments, an airflow may be generated to flow through the hollow longitudinal tunnel 160 from a first longitudinal end opening to a second longitudinal end opening such that thermal energy may be transferred from the plurality of fins 110 to the airflow for heat dissipation.
[00020] According to various embodiments, the heat sink 100, which is formed by the plurality of fins 110 assembled together, may include a plurality of hollow longitudinal tunnels 160 through which airflow may enter via first longitudinal end openings of the plurality of hollow longitudinal tunnels 160 respectively, flow respectively through the plurality of hollow longitudinal tunnels 160, and exit via second longitudinal end openings of the plurality of hollow longitudinal tunnels 160 respectively. Accordingly, in this manner, thermal energy may be transferred from the heat sink 100 to the airflow flowing through the plurality of hollow longitudinal tunnels 160 for heat dissipation. According to various embodiments, the air flow may only enter through the first longitudinal end opening of each hollow longitudinal tunnel and exit through the second longitudinal end opening of each hollow longitudinal tunnel. According to various embodiments, the heat sink 100 may not include (or may be free of) any other inlet or outlet openings for the airflow. According to various embodiments, each fin 110 of the plurality of fins 110 of the heat sink 100 may not include (or may be free of) any openings or apertures along the the first raised border 130 and/or the second raised border 140 of the each fin 110.
[00021] According to various embodiments, the secondary plate-like appendage 150 of the first fin 110a may be oriented to longitudinally divide at least a portion of the hollow longitudinal tunnel 160. According to various embodiments, the secondary plate-like appendage 150 of the first fin 110a may be aligned to partition or cut at least the portion of the hollow longitudinal tunnel 160 in a longitudinally manner so as to form adjacent subtunnels, side-by-side, along the hollow longitudinal tunnel 160. According to various embodiments, the secondary plate-like appendage 150 of the first fin 110a may be oriented to be parallel to the longitudinal direction of the elongate plate-like fin body 120.
[00022] FIG. 2A shows a schematic diagram of a heat sink 200 according to various embodiments. FIG. 2B shows a schematic diagram of a fin 210 of the heat sink 200 of FIG. 2A according to various embodiments. According to various embodiments, the heat sink 200 may include a plurality of fins 210 (or two or more fins 210). According to various embodiments, the plurality of fins 210 may be assembled together to form the heat sink 200. According to various embodiments, the plurality of fins 210 may be assembled together via stacking, joining, connecting, or fitting the plurality of fins 210 to each other. According to various embodiments, the plurality of fins 210 may be parallel to each other.
[00023] According to various embodiments, each of the plurality of fins 210 may include a continuous solid elongate plate-like fin body 220 having a first surface 222 and a second surface 224 opposite the first surface 222. Accordingly, the plate-like fin body 220 may be of a long and thin shape. According to various embodiments, the elongate plate-like fin body 220 may be a single piece of solid extending continuously in a longitudinal direction free of any holes or gaps or breaks anywhere along the elongate plate-like fin body 220. Accordingly, the elongate plate-like fin body 220 may be extending uninterrupted along its length. According to various embodiments, each of the first surface 222 and the second surface 224 may be a continuous surface extending along a length of the elongate plate-like fin body 220. According to various embodiments, the first surface 222 of the elongate platelike fin body 220 may be facing a first direction and the second surface 224 of the elongate plate-like fin body 220 may be facing a second direction, which is opposite the first direction. Hence, the first surface 222 and the second surface 224 may be facing opposite directions. According to various embodiments, each of the first surface 222 and the second surface 224 may be of an oblong shape.
[00024] According to various embodiments, each of the plurality of fins 210 may include a first raised border 230 along a first longitudinal side 226 of the first surface 222 of the elongate plate-like fin body 220. According to various embodiments, the first raised border 230 may protrude perpendicularly from the first surface 222 of the elongate plate-like fin body 220. According to various embodiments, the first raised border 230 may be an upright protrusion protruding from the first surface 222 of the elongate plate-like fin body 220. Accordingly, the first raised border 230 may be protruding in the first direction which the first surface 222 is facing. Further, the first raised border 230 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the first longitudinal side 226 of the first surface 222 of the elongate plate-like fin body 220.
[00025] According to various embodiments, each of the plurality of fins 210 may include a second raised border 240 along a second longitudinal side 228 of the first surface 222 of the elongate plate-like fin body 220. According to various embodiments, the second raised border 240 may protrude perpendicularly from the first surface 222 of the elongate platelike fin body 220. According to various embodiments, the second raised border 240 may be an upright protrusion protruding from the first surface 222 of the elongate plate-like fin body 220. Accordingly, the second raised border 240 may be protruding in the first direction which the first surface 222 is facing. Further, the second raised border 240 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the second longitudinal side 228 of the first surface 222 of the elongate plate-like fin body 220.
[00026] According to various embodiments, the first longitudinal side 226 and the second longitudinal side 228 of the first surface 222 of the elongate plate-like fin body 220 may be two longitudinally extending long sides of the first surface 222 of the elongate plate-like fin body 220. According to various embodiments, with the first raised border 230 along the first longitudinal side 226 of the first surface 222 of the elongate plate-like fin body 220 and the second raised border 240 along the second longitudinal side 228 of the first surface 222 of the elongate plate-like fin body 220, the first raised border 230 and the second raised border 240 may form side walls of a channel and the first surface 222 of the elongate platelike fin body 220 may form a channel bed of the channel. Accordingly, the continuous solid elongate plate-like fin body 220, the first raised border 230 and the second raised border 240 may resemble a trough or a gutter, which may define the channel.
[00027] According to various embodiments, each of the plurality of fins 210 may include a secondary plate-like appendage 250 disposed within a space 252 (or the channel) defined by the elongate plate-like fin body 220, the first raised border 230 and the second raised border 240. According to various embodiments, the secondary plate-like appendage 250 may be an auxiliary part of each fin 210. According to various embodiments, the secondary plate-like appendage 250 may include a plate-like extension or a flap extending from an upper edge 232 of the first raised border 230, whereby the plate-like extension or the flap lies in the space 252 (or the channel) defined by the elongate plate-like fin body 220, the first raised border 230 and the second raised border 240. According to various embodiments, the secondary plate-like appendage 250 may extend from the first raised border 230. According to various embodiments, the secondary plate-like appendage 250 may extend into the space 252 (or the channel) defined by the elongate plate-like fin body 220, the first raised border 230 and the second raised border 240. According to various embodiments, the secondary plate-like appendage 250 may extend from the upper edge 232 of the first raised border 230. According to various embodiments, the secondary plate-like appendage 250 may extend from the upper edge 232 of the first raised border 230 at the first longitudinal side 226 of the first surface 222 of the elongate plate-like fin body 220 towards the second longitudinal side 228 of the first surface 222 of the elongate plate-like fin body 220.
[00028] According to various embodiments, the secondary plate-like appendage 250 may be joined, attached, or connected to the first raised border 230 in a manner so as to be extending into the space 252 (or the channel) defined by the elongate plate-like fin body 220, the first raised border 230 and the second raised border 240. According to various embodiments, the secondary plate-like appendage 250 may be integrally formed with the first raised border 230 such that the secondary plate-like appendage 250 may be folded so as to extend into the space 252 (or the channel) defined by the elongate plate-like fin body 220, the first raised border 230 and the second raised border 240. According to various embodiments, the secondary plate-like appendage 250 may be folded along the upper edge 232 of the first raised border 230 at the first longitudinal side 226 of the first surface 222 of the elongate plate-like-fin body 220 to slant towards the second longitudinal side 228 of the first surface 222 of the elongate plate-like fin body 220.
[00029] According to various embodiments, a first fin 210a of the plurality of fins 210 may be assembled to a second fin 210b of the plurality of fins 210 with the first raised border 230 at the first longitudinal side 226 of the first surface 222 of the first fin 210a and the second raised border 240 at the second longitudinal side 228 of the first surface 222 of the first fin 210a respectively engaged with first and second longitudinal sides of the second surface 224 of the second fin 210b in a manner so as to form a hollow longitudinal tunnel 260 enclosed by the first fin 210a and the second fin 210b. According to various embodiments, the first and the second longitudinal sides of the second surface 224 of the elongate plate-like fin body 220 may be two longitudinally extending long sides of the second surface 224 of the elongate plate-like fin body 220. According to various embodiments, the heat sink 200 may be formed by assembling the first fin 210a to the second fin 210b with the first surface 222 of the first fin 210a facing the second surface 224 of the second fin 210b. According to various embodiments, the first fin 210a and the second fin 210b may be aligned such that the first raised border 230 at the first longitudinal side 226 of the first surface 222 of the first fin 210a is engaged with the first longitudinal side of the second surface 224 of the second fin 210b and the second raised border 240 at the second longitudinal side 228 of the first surface 222 of the first fin 210a is engaged with the second longitudinal side of the second surface 224 of the second fin 210b. According to various embodiments, the hollow longitudinal tunnel 260 may be defined by the first surface 222 of the first fin 210a, the first raised border 230 of the first fin 210a, the second raised border 240 of the first fin 210a, and the second surface 224 of the second fin 210b. According to various embodiments, an airflow may be generated to flow through the hollow longitudinal tunnel 260 from a first longitudinal end opening to a second longitudinal end opening such that thermal energy may be transferred from the plurality of fins 210 to the airflow for heat dissipation.
[00030] According to various embodiments, the heat sink 200, which is formed by the plurality of fins 210 assembled together, may include a plurality of hollow longitudinal tunnels 260 through which airflow may enter via first longitudinal end openings of the plurality of hollow longitudinal tunnels 260 respectively, flow respectively through the plurality of hollow longitudinal tunnels 260, and exit via second longitudinal end openings of the plurality of hollow longitudinal tunnels 260 respectively. Accordingly, in this manner, thermal energy may be transferred from the heat sink 200 to the airflow flowing through the plurality of hollow longitudinal tunnels 260 for heat dissipation. According to various embodiments, the air flow may only enter through the first longitudinal end opening of each hollow longitudinal tunnel and exit through the second longitudinal end opening of each hollow longitudinal tunnel. According to various embodiments, the heat sink 200 may not include (or may be free of) any other inlet or outlet openings for the airflow. According to various embodiments, each fin 210 of the plurality of fins 210 of the heat sink 200 may not include (or may be free of) any openings or apertures along the the first raised border 230 and/or the second raised border 240 of the each fin 210.
[00031] According to various embodiments, the secondary plate-like appendage 250 of the first fin 210a may be oriented to longitudinally divide at least a portion of the hollow longitudinal tunnel 260. According to various embodiments, the secondary plate-like appendage 250 of the first fin 210a may be aligned to partition or cut at least the portion of the hollow longitudinal tunnel 260 in a longitudinally manner so as to form adjacent subtunnels, side-by-side, along the hollow longitudinal tunnel 260. According to various embodiments, the secondary plate-like appendage 250 of the first fin 210a may be oriented to be parallel to the longitudinal direction of the elongate plate-like fin body 220.
[00032] According to various embodiments, the elongate plate-like fin body 220 may be shaped with a second longitudinal end portion 220b narrower than a first longitudinal end portion 220a. According to various embodiments, a width at the second longitudinal end portion 220b between the first longitudinal side 226 and the second longitudinal side 228 of the surface 222 of the elongate plate-like fin body 220 is narrower than a width at the first longitudinal end portion 220a between the first longitudinal side 226 and the second longitudinal side 228 of the surface 222 of the elongate plate-like fin body 220. According to various embodiments, the elongate plate-like fin body 220 may be shaped with an expansion portion 220c between the second longitudinal end portion 220b and the first longitudinal end portion 220a. According to various embodiments, the expansion portion 220c of the elongate plate-like fin body 220 may include a linear expansion profile. According to various embodiments, the linear expansion profile may include, but not limited to, a funnel shape profile, a trapezoid shape profile, or a right-angle trapezoid shape profile. For example as shown, according to various embodiments, the second longitudinal side 228 of the first surface 222 of the elongate plate-like fin body 220 may be extending diagonally outwards along the expansion portion 220c from the second longitudinal end portion 220b to the first longitudinal end portion 220a, and the first longitudinal side 226 of the first surface 222 of the elongate plate-like fin body 220 may be extending longitudinally along a continuous straight line from the second longitudinal end portion 220b, through the expansion portion 220c, and to the first longitudinal end portion 220a.
[00033] According to various embodiments, the secondary plate-like appendage 250 may extend longitudinally along the expansion portion 220c of the elongate plate-like fin body
220. According to various embodiments, the secondary plate-like appendage 250 may be disposed to traverse longitudinally along and over the expansion portion 220c of the elongate plate-like fin body 220. Accordingly, the secondary plate-like appendage 250 may stretch from second longitudinal end portion 220b, over the expansion portion 220c, and to the first longitudinal end portion 220a. According to various embodiments, the secondary plate-like appendage 250 may be correspondingly shaped so as to include a narrower portion corresponding to the second longitudinal end portion 220b of the elongate plate-like fin body 220, an expansion portion corresponding to the expansion portion 220c of the elongate plate-like fin body 220, and a broader portion corresponding to the first longitudinal end portion 220a of the elongate plate-like fin body 220.
[00034] According to various embodiments, each fin 210 may be formed from a single sheet metal cut into a shape having the first raised border 230 and the second raised border 240 adjoining the elongate plate-like fin body 220, and the secondary plate-like appendage 250 adjoining the first raised border 230. According to various embodiments, the first raised border 230 and the second raised border 240 may be adjoining the elongate plate-like fin body 220 along two opposite longitudinal fold-lines of the elongate plate-like fin body 220. According to various embodiments, the secondary plate-like appendage 250 may be adjoining the first raised border 230 along a longitudinal fold-line. According to various embodiments, the first raised border 230 may be folded with respect to the elongate platelike fin body 220 along the first longitudinal side 226 of the first surface 222 of the elongate plate-like body 220 (or the longitudinal fold-line between the first raised border 230 and the elongate plate-like fin body 220). According to various embodiments, the second raised border 240 may be folded with respect to the elongate plate-like fin body 220 along the second longitudinal side 228 of the first surface 220 of the elongate plate-like body 220 (or the longitudinal fold-line between the second raised border 240 and the elongate plate-like fin body 220). According to various embodiments, the secondary plate-like appendage 250 may be folded with respect to the first raised border 230 along the upper edge 232 of the first raised border 230 (or the longitudinal fold-line between the secondary plate-like appendage 250 and the first raised border 230).
[00035] FIG. 3 shows a side view of a variant of a fin 310 for a heat sink according to various embodiments. According to various embodiments, the fin 310 may include a continuous solid elongate plate-like fin body 320 having a first surface 322 and a second surface 324 opposite the first surface 322. Accordingly, the plate-like fin body 320 may be of a long and thin shape. According to various embodiments, the elongate plate-like fin body 320 may be a single piece of solid extending continuously in a longitudinal direction free of any holes or gaps or breaks anywhere along the elongate plate-like fin body 320. Accordingly, the elongate plate-like fin body 320 may be extending uninterrupted along its length. According to various embodiments, each of the first surface 322 and the second surface 324 may be a continuous surface extending along a length of the elongate plate-like fin body 320. According to various embodiments, the first surface 322 of the elongate platelike fin body 320 may be facing a first direction and the second surface 324 of the elongate plate-like fin body 320 may be facing a second direction, which is opposite the first direction. Hence, the first surface 322 and the second surface 324 may be facing opposite directions. According to various embodiments, each of the first surface 322 and the second surface 324 may be of an oblong shape.
[00036] According to various embodiments, the fin 310 may include a first raised border 330 along a first longitudinal side 326 of the first surface 322 of the elongate plate-like fin body 320. According to various embodiments, the first raised border 330 may protrude perpendicularly from the first surface 322 of the elongate plate-like fin body 320. According to various embodiments, the first raised border 330 may be an upright protrusion protruding from the first surface 322 of the elongate plate-like fin body 320. Accordingly, the first raised border 330 may be protruding in the first direction which the first surface 322 is facing. Further, the first raised border 330 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the first longitudinal side 326 of the first surface 322 of the elongate plate-like fin body 320.
[00037] According to various embodiments, the fin 310 may include a second raised border 340 along a second longitudinal side 328 of the first surface 322 of the elongate platelike fin body 320. According to various embodiments, the second raised border 340 may protrude perpendicularly from the first surface 322 of the elongate plate-like fin body 320. According to various embodiments, the second raised border 340 may be an upright protrusion protruding from the first surface 322 of the elongate plate-like fin body 320. Accordingly, the second raised border 340 may be protruding in the first direction which the first surface 322 is facing. Further, the second raised border 340 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the second longitudinal side 328 of the first surface 322 of the elongate plate-like fin body 320.
[00038] According to various embodiments, the first longitudinal side 326 and the second longitudinal side 328 of the first surface 322 of the elongate plate-like fin body 320 may be two longitudinally extending long sides of the first surface 322 of the elongate plate-like fin body 320. According to various embodiments, with the first raised border 330 along the first longitudinal side 326 of the first surface 322 of the elongate plate-like fin body 320 and the second raised border 340 along the second longitudinal side 328 of the first surface 322 of the elongate plate-like fin body 320, the first raised border 330 and the second raised border 340 may form side walls of a channel and the first surface 322 of the elongate platelike fin body 320 may form a channel bed of the channel. Accordingly, the continuous solid elongate plate-like fin body 320, the first raised border 330 and the second raised border 340 may resemble a trough or a gutter, which may define the channel.
[00039] According to various embodiments, the fin 310 may include at least one secondary plate-like appendage 350 disposed within a space 352 (or the channel) defined by the elongate plate-like fin body 320, the first raised border 330 and the second raised border 340. As shown, the fin 310 may include two secondary plate-like appendages 350. According to various embodiments, the at least one secondary plate-like appendage 350 may be an auxiliary part of the fin 310. According to various embodiments, the at least one secondary plate-like appendage 350 may include a plate-like extension or a flap extending from an upper edge 332 of the first raised border 330, whereby the plate-like extension or the flap lies in the space 352 (or the channel) defined by the elongate plate-like fin body 320, the first raised border 330 and the second raised border 340. According to various embodiments, the at least one secondary plate-like appendage 350 may extend from the first raised border 330. According to various embodiments, the at least one secondary plate-like appendage 350 may extend into the space 352 (or the channel) defined by the elongate platelike fin body 320, the first raised border 330 and the second raised border 340. According to various embodiments, the at least one secondary plate-like appendage 350 may extend from the upper edge 332 of the first raised border 330. According to various embodiments, the at least one secondary plate-like appendage 350 may extend from the upper edge 332 of the first raised border 330 at the first longitudinal side 326 of the first surface 322 of the elongate plate-like fin body 320 towards the second longitudinal side 328 of the first surface 322 of the elongate plate-like fin body 320.
[00040] According to various embodiments, the at least one secondary plate-like appendage 350 may be joined, attached, or connected to the first raised border 330 in a manner so as to be extending into the space 352 (or the channel) defined by the elongate plate-like fin body 320, the first raised border 330 and the second raised border 340. According to various embodiments, the at least one secondary plate-like appendage 350 may be integrally formed with the first raised border 330 such that the at least one secondary plate-like appendage 350 may be folded so as to extend into the space 352 (or the channel) defined by the elongate plate-like fin body 320, the first raised border 330 and the second raised border 340. According to various embodiments, the at least one secondary plate-like appendage 350 may be folded along the upper edge 332 of the first raised border 330 at the first longitudinal side 326 of the first surface 322 of the elongate plate-like-fin body 320 to slant towards the second longitudinal side 328 of the first surface 322 of the elongate platelike fin body 320.
[00041] According to various embodiments, the elongate plate-like fin body 320 may be shaped with a second longitudinal end portion 320b narrower than a first longitudinal end portion 320a. According to various embodiments, a width at the second longitudinal end portion 320b between the first longitudinal side 326 and the second longitudinal side 328 of the surface 322 of the elongate plate-like fin body 320 may be narrower than a width at the first longitudinal end portion 320a between the first longitudinal side 326 and the second longitudinal side 328 of the surface 322 of the elongate plate-like fin body 320. According to various embodiments, the elongate plate-like fin body 320 may be shaped with an expansion portion 320c between the second longitudinal end portion 320b and the first longitudinal end portion 320a. According to various embodiments, the expansion portion 320c of the elongate plate-like fin body 320 may include a linear expansion profile. According to various embodiments, the linear expansion profile may include, but not limited to, a funnel shape profile, a trapezoid shape profile, or a right-angle trapezoid shape profile. For example as shown, according to various embodiments, the first longitudinal side 326 of the first surface 322 of the elongate plate-like fin body 320 may be extending diagonally outwards along the expansion portion 320c from the second longitudinal end portion 320b to the first longitudinal end portion 320a, and the second longitudinal side 328 of the first surface 322 of the elongate plate-like fin body 320 may be extending longitudinally along a continuous straight line from the second longitudinal end portion 320b, through the expansion portion 320c, and to the first longitudinal end portion 320a.
[00042] According to various embodiments, when the at least one secondary plate-like appendage 350 includes two secondary plate-like appendages 350, the two secondary plate like appendages 350 may provide coverage extending longitudinally along the expansion portion 320c of the elongate plate-like fin body 320. According to various embodiments, the two secondary plate-like appendages 350 may be disposed to provide traverse coverage longitudinally along and over the expansion portion 320c of the elongate plate-like fin body 320. Accordingly, the two secondary plate-like appendages 350 may provide coverage to stretch from the second longitudinal end portion 320b, over the expansion portion 320c, and to the first longitudinal end portion 320a. According to various embodiments, a first of the two secondary plate-like appendages 350 may be shaped so as to have a portion corresponding to the narrower second longitudinal end portion 320b of the elongate platelike fin body 320 and another portion extending into the expansion portion 320c of the elongate plate-like fin body 320. According to various embodiments, a second of the two secondary plate-like appendages 350 may be shaped so as to have a portion corresponding to the broader first longitudinal end portion 320a of the elongate plate-like fin body 320 and another portion extending into the expansion portion 320c of the elongate plate-like fin body 320.
[00043] According to various embodiments, the fin 310 may be formed from a single sheet metal cut into a shape having the first raised border 330 and the second raised border 340 adjoining the elongate plate-like fin body 320, and the at least one secondary plate-like appendage 350 adjoining the first raised border 330. According to various embodiments, the first raised border 330 and the second raised border 340 may be adjoining the elongate plate-like fin body 320 along two opposite longitudinal fold-lines of the elongate plate-like fin body 320. According to various embodiments, the at least one secondary plate-like appendage 350 may be adjoining the first raised border 330 along a longitudinal fold-line. According to various embodiments, the first raised border 330 may be folded with respect to the elongate plate-like fin body 320 along the first longitudinal side 326 of the first surface 322 of the elongate plate-like body 320 (or the longitudinal fold-line between the first raised border 330 and the elongate plate-like fin body 320). According to various embodiments, the second raised border 340 may be folded with respect to the elongate plate-like fin body 320 along the second longitudinal side 328 of the first surface 320 of the elongate plate-like body 320 (or the longitudinal fold-line between the second raised border 340 and the elongate plate-like fin body 320). According to various embodiments, the at least one secondary plate-like appendage 350 may be folded with respect to the first raised border
330 along the upper edge 332 of the first raised border 330 (or the longitudinal fold-line between the secondary plate-like appendage 350 and the first raised border 330).
[00044] FIG. 4A shows a heat sink 400 according to various embodiments. FIG. 4B shows a side perspective view of a fin 410 of the heat sink 400 of FIG. 4A according to various embodiments. FIG. 4C shows a back perspective view of the fin 410 of the heat sink 400 of FIG. 4A according to various embodiments. According to various embodiments, the heat sink 400 may include a plurality of fins 410 (or two or more fins 410). According to various embodiments, the plurality of fins 410 may be assembled together to form the heat sink 400. According to various embodiments, the plurality of fins 410 may be assembled together via stacking, joining, connecting, or fitting the plurality of fins 410 to each other. According to various embodiments, the plurality of fins 410 may be parallel to each other.
[00045] According to various embodiments, each of the plurality of fins 410 may include a continuous solid elongate plate-like fin body 420 having a first surface 422 and a second surface 424 opposite the first surface 422. Accordingly, the plate-like fin body 420 may be of a long and thin shape. According to various embodiments, the elongate plate-like fin body 420 may be a single piece of solid extending continuously in a longitudinal direction free of any holes or gaps or breaks anywhere along the elongate plate-like fin body 420. Accordingly, the elongate plate-like fin body 420 may be extending uninterrupted along its length. According to various embodiments, each of the first surface 422 and the second surface 424 may be a continuous surface extending along a length of the elongate plate-like fin body 420. According to various embodiments, the first surface 422 of the elongate platelike fin body 420 may be facing a first direction and the second surface 424 of the elongate plate-like fin body 420 may be facing a second direction, which is opposite the first direction. Hence, the first surface 422 and the second surface 424 may be facing opposite directions. According to various embodiments, each of the first surface 422 and the second surface 424 may be of an oblong shape, or any suitable shape.
[00046] According to various embodiments, each of the plurality of fins 410 may include a first raised border 430 along a first longitudinal side 426 of the first surface 422 of the elongate plate-like fin body 420. According to various embodiments, the first raised border 430 may protrude perpendicularly from the first surface 422 of the elongate plate-like fin body 420. According to various embodiments, the first raised border 430 may be an upright protrusion protruding from the first surface 422 of the elongate plate-like fin body 420.
Accordingly, the first raised border 430 may be protruding in the first direction which the first surface 422 is facing. Further, the first raised border 430 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the first longitudinal side 426 of the first surface 422 of the elongate plate-like fin body 420.
[00047] According to various embodiments, each of the plurality of fins 410 may include a second raised border 440 along a second longitudinal side 428 of the first surface 422 of the elongate plate-like fin body 420. According to various embodiments, the second raised border 440 may protrude perpendicularly from the first surface 422 of the elongate platelike fin body 420. According to various embodiments, the second raised border 440 may be an upright protrusion protruding from the first surface 422 of the elongate plate-like fin body 420. Accordingly, the second raised border 440 may be protruding in the first direction which the first surface 422 is facing. Further, the second raised border 440 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the second longitudinal side 428 of the first surface 422 of the elongate plate-like fin body 420.
[00048] According to various embodiments, the first longitudinal side 426 and the second longitudinal side 428 of the first surface 422 of the elongate plate-like fin body 420 may be two longitudinally extending long sides of the first surface 422 of the elongate plate-like fin body 420. According to various embodiments, with the first raised border 430 along the first longitudinal side 426 of the first surface 422 of the elongate plate-like fin body 420 and the second raised border 440 along the second longitudinal side 428 of the first surface 422 of the elongate plate-like fin body 420, the first raised border 430 and the second raised border 440 may form side walls of a channel and the first surface 422 of the elongate platelike fin body 420 may form a channel bed of the channel. Accordingly, the continuous solid elongate plate-like fin body 420, the first raised border 430 and the second raised border 440 may resemble a trough or a gutter, which may define the channel.
[00049] According to various embodiments, each of the plurality of fins 410 may include a secondary plate-like appendage 450 disposed within a space 452 (or the channel) defined by the elongate plate-like fin body 420, the first raised border 430 and the second raised border 440. According to various embodiments, the secondary plate-like appendage 450 may be an auxiliary part of each fin 410. According to various embodiments, the secondary plate-like appendage 450 may include a plate-like extension of the elongate plate-like fin body 420, whereby the plate-like extension lies in the space 452 (or the channel) defined by the elongate plate-like fin body 420, the first raised border 430 and the second raised border
440. According to various embodiments, the secondary plate-like appendage 450 may extend from the elongate plate-like fin body 420. According to various embodiments, the secondary plate-like appendage 450 may extend into the space 452 (or the channel) defined by the elongate plate-like fin body 420, the first raised border 430 and the second raised border 440. According to various embodiments, the secondary plate-like appendage 450 may extend from the first surface 422 at a first longitudinal end portion 420a of the elongate plate-like fin body 420.
[00050] According to various embodiments, the secondary plate-like appendage 450 may be joined, attached, or connected to the elongate plate-like fin body 420 in a manner so as to be extending into the space 452 (or the channel) defined by the elongate plate-like fin body 420, the first raised border 430 and the second raised border 440.
[00051] According to various embodiments, the secondary plate-like appendage 450 may include an elongate plate portion 454 and a first spacer support portion 456a at a first longitudinal end 454a of the elongate plate portion 454. According to various embodiments, the elongate plate portion 454 of the secondary plate-like appendage 450 may be of a rectangular shape, a rounded rectangular shape, a race-track shape, an oblong shape, or any suitable shape. According to various embodiments, the first longitudinal end 454a of the elongate plate portion 454 of the secondary plate-like appendage 450 may be attached to the first surface 422 at the first longitudinal end portion 420a of the elongate plate-like fin body 420 via the first spacer support potion 456a of the secondary plate-like appendage 450 in a manner so as to space the elongate plate portion 454 of the secondary plate-like appendage 450 from the elongate plate-like fin body 420 and to orient the elongate plate portion 454 of the secondary plate-like appendage 450 to extend in a parallel manner with respect to the elongate plate-like fin body 420. Accordingly, the elongate plate portion 454 of the secondary plate-like appendage 450 may be suspended by the first spacer support portion 456a of the secondary plate-like appendage 450 in a manner so as to lie within the space 452 (or the channel) defined by the elongate plate-like fin body 420, the first raised border 430 and the second raised border 440.
[00052] According to various embodiments, the elongate plate portion 454 of the secondary plate-like appendage 450 may include at least one through-hole 458a. As shown, according to various embodiments, the elongate plate portion 454 of the secondary platelike appendage 450 may include two thro ugh-ho les 458a. According to various embodiments, the through-hole 458a may be of a rectangular shape, a rounded rectangular shape, a race-track shape, an oblong shape, or any suitable shape. For example, as shown, the through-hole 458a may be of a rectangular shape.
[00053] According to various embodiments, the first spacer support portion 456a of the secondary plate-like appendage 450 may include at least one through-hole 458b. As shown, according to various embodiments, the first spacer support portion 456a of the secondary plate-like appendage 450 may include one through-hole 458b. According to various embodiments, the through-hole 458b may be of a rectangular shape, a rounded rectangular shape, a race-track shape, an oblong shape, or any suitable shape. For example, as shown, the through-hole 458b may be of a rectangular shape.
[00054] According to various embodiments, the elongate plate-like fin body 420 may be shaped with the first longitudinal end portion 420a and a middle portion 420c having a uniform width. Accordingly, the elongate plate-like fin body 420 may have a uniform width profile extending from the first longitudinal end portion 420a to the middle portion 420c. According to various embodiments, the elongate plate portion 454 of the secondary platelike appendage 450 may extend longitudinally along the first longitudinal end portion 420a of the elongate plate-like fin body 420 and the middle portion 420c of the elongate platelike fin body 420. Hence, the elongate plate portion 454 of the secondary plate-like appendage 450 may be suspended over the first longitudinal end portion 420a of the elongate plate-like fin body 420 and the middle portion 420c of the elongate plate-like fin body 420. According to various embodiments, the elongate plate portion 454 of the secondary platelike appendage 450 may not extend over (or may not extend into a region above) a second longitudinal end portion 420b of the elongate plate-like fin body 420.
[00055] According to various embodiments, as shown in FIG. 4C, the secondary platelike appendage 450 may further include a second spacer support portion 456b at a second longitudinal end 454b of the elongate plate portion 454. According to various embodiments, the second spacer support portion 456b at a second longitudinal end 454b of the elongate plate portion 454 may be abutting the first surface 422 of the elongate plate-like fin body 420.
[00056] According to various embodiments, a first fin 410a of the plurality of fins 410 may be assembled to a second fin 410b of the plurality of fins 410 with the first raised border 430 at the first longitudinal side 426 of the first surface 422 of the first fin 410a and the second raised border 440 at the second longitudinal side 428 of the first surface 422 of the first fin 410a respectively engaged with first and second longitudinal sides of the second surface 424 of the second fin 410b in a manner so as to form a hollow longitudinal tunnel 460 enclosed by the first fin 410a and the second fin 410b. According to various embodiments, the first and the second longitudinal sides of the second surface 424 of the elongate plate-like fin body 420 may be two longitudinally extending long sides of the second surface 424 of the elongate plate-like fin body 420. According to various embodiments, the heat sink 400 may be formed by assembling the first fin 410a to the second fin 410b with the first surface 422 of the first fin 410a facing the second surface 424 of the second fin 410b. According to various embodiments, the first fin 410a and the second fin 410b may be aligned such that the first raised border 430 at the first longitudinal side 426 of the first surface 422 of the first fin 410a is engaged with the first longitudinal side of the second surface 424 of the second fin 410b and the second raised border 440 at the second longitudinal side 428 of the first surface 422 of the first fin 410a is engaged with the second longitudinal side of the second surface 424 of the second fin 410b. According to various embodiments, the hollow longitudinal tunnel 460 may be defined by the first surface 422 of the first fin 410a, the first raised border 1430 of the first fin 410a, the second raised border 440 of the first fin 410a, and the second surface 424 of the second fin 410b. According to various embodiments, an airflow may be generated to flow through the hollow longitudinal tunnel 460 from a first longitudinal end opening to a second longitudinal end opening such that thermal energy may be transferred from the plurality of fins 410 to the airflow for heat dissipation.
[00057] According to various embodiments, the heat sink 400, which is formed by the plurality of fins 410 assembled together, may include a plurality of hollow longitudinal tunnels 460 through which airflow may enter via first longitudinal end openings of the plurality of hollow longitudinal tunnels respectively, flow respectively through the plurality of hollow longitudinal tunnels 460, and exit via the second longitudinal end openings of the plurality of hollow longitudinal tunnels 460 respectively. Accordingly, in this manner, thermal energy may be transferred from the heat sink 400 to the airflow flowing through the plurality of hollow longitudinal tunnels 460 for heat dissipation. According to various embodiments, the air flow may only enter through the first longitudinal end opening of each hollow longitudinal tunnel and exit through the second longitudinal end opening of each hollow longitudinal tunnel. According to various embodiments, the heat sink 400 may not include (or may be free of) any other inlet or outlet openings for the airflow. According to various embodiments, each fin 410 of the plurality of fins 410 of the heat sink 400 may not include (or may be free of) any openings or apertures along the the first raised border 430 and/or the second raised border 440 of the each fin 410.
[00058] According to various embodiments, the secondary plate-like appendage 450 of the first fin 410a may be oriented to longitudinally divide at least a portion of the hollow longitudinal tunnel 460. According to various embodiments, the secondary plate-like appendage 450 of the first fin 410a may be aligned to partition or cut at least the portion of the hollow longitudinal tunnel 460 in a longitudinally manner so as to form adjacent subtunnels, side-by-side, along the hollow longitudinal tunnel 460. According to various embodiments, the secondary plate-like appendage 450 of the first fin 410a may be oriented to be parallel to the longitudinal direction of the elongate plate-like fin body 420.
[00059] FIG. 5 shows a side view of a variant of a fin 510 for a heat sink according to various embodiments. According to various embodiments, the fin 510 may include a continuous solid elongate plate-like fin body 520 having a first surface 522 and a second surface 524 opposite the first surface 522. Accordingly, the plate-like fin body 520 may be of a long and thin shape. According to various embodiments, the elongate plate-like fin body 520 may be a single piece of solid extending continuously in a longitudinal direction free of any holes or gaps or breaks anywhere along the elongate plate-like fin body 520. Accordingly, the elongate plate-like fin body 520 may be extending uninterrupted along its length. According to various embodiments, each of the first surface 522 and the second surface 524 may be a continuous surface extending along a length of the elongate plate-like fin body 520. According to various embodiments, the first surface 522 of the elongate platelike fin body 520 may be facing a first direction and the second surface 524 of the elongate plate-like fin body 520 may be facing a second direction, which is opposite the first direction. Hence, the first surface 522 and the second surface 524 may be facing opposite directions. According to various embodiments, each of the first surface 522 and the second surface 524 may be of an oblong shape, or any suitable shape.
[00060] According to various embodiments, the fin 510 may include a first raised border 530 along a first longitudinal side 526 of the first surface 522 of the elongate plate-like fin body 520. According to various embodiments, the first raised border 530 may protrude perpendicularly from the first surface 522 of the elongate plate-like fin body 520. According to various embodiments, the first raised border 530 may be an upright protrusion protruding from the first surface 522 of the elongate plate-like fin body 520. Accordingly, the first raised border 530 may be protruding in the first direction which the first surface 522 is facing. Further, the first raised border 530 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the first longitudinal side 526 of the first surface 522 of the elongate plate-like fin body 520.
[00061] According to various embodiments, the fins 510 may include a second raised border 540 along a second longitudinal side 528 of the first surface 522 of the elongate platelike fin body 520. According to various embodiments, the second raised border 540 may protrude perpendicularly from the first surface 522 of the elongate plate-like fin body 520. According to various embodiments, the second raised border 540 may be an upright protrusion protruding from the first surface 522 of the elongate plate-like fin body 520. Accordingly, the second raised border 540 may be protruding in the first direction which the first surface 522 is facing. Further, the second raised border 540 may be lined in the direction of the length or running lengthwise along a longitudinal boundary at the second longitudinal side 528 of the first surface 522 of the elongate plate-like fin body 520.
[00062] According to various embodiments, the first longitudinal side 526 and the second longitudinal side 528 of the first surface 522 of the elongate plate-like fin body 520 may be two longitudinally extending long sides of the first surface 522 of the elongate plate-like fin body 520. According to various embodiments, with the first raised border 530 along the first longitudinal side 526 of the first surface 522 of the elongate plate-like fin body 520 and the second raised border 540 along the second longitudinal side 528 of the first surface 522 of the elongate plate-like fin body 520, the first raised border 530 and the second raised border 540 may form side walls of a channel and the first surface 522 of the elongate platelike fin body 520 may form a channel bed of the channel. Accordingly, the continuous solid elongate plate-like fin body 520, the first raised border 530 and the second raised border 540 may resemble a trough or a gutter, which may define the channel.
[00063] According to various embodiments, the fin 510 may include a secondary platelike appendage 550 disposed within a space 552 (or the channel) defined by the elongate plate-like fin body 520, the first raised border 530 and the second raised border 540. According to various embodiments, the secondary plate-like appendage 550 may be an auxiliary part of each fin 510. According to various embodiments, the secondary plate-like appendage 550 may include a plate-like extension of the elongate plate-like fin body 520, whereby the plate-like extension lies in the space 552 (or the channel) defined by the elongate plate-like fin body 520, the first raised border 530 and the second raised border 540. According to various embodiments, the secondary plate-like appendage 550 may extend from the elongate plate-like fin body 520. According to various embodiments, the secondary plate-like appendage 550 may extend into the space 552 (or the channel) defined by the elongate plate-like fin body 520, the first raised border 530 and the second raised border 540. According to various embodiments, the secondary plate-like appendage 550 may extend from the first surface 522 at a first longitudinal end portion 520a of the elongate plate-like fin body 520.
[00064] According to various embodiments, the secondary plate-like appendage 550 may be integrally formed with the elongate plate-like fin body 520 such that the secondary platelike appendage 550 may be folded with respect to the elongate plate-like fin body 520 so as to extend into the space 552 (or the channel) defined by the elongate plate-like fin body 520, the first raised border 530 and the second raised border 540.
[00065] According to various embodiments, the secondary plate-like appendage 550 may include an elongate plate portion 554 and a first spacer support portion 556a at a first longitudinal end 554a of the elongate plate portion 554. According to various embodiments, the elongate plate portion 554 of the secondary plate-like appendage 550 may be of a rectangular shape, a rounded rectangular shape, a race-track shape, an oblong shape, or any suitable shape. For example, as shown, the elongate plate portion 554 of the secondary plate-like appendage 550 may be of a rectangular shape. According to various embodiments, the first longitudinal end 554a of the elongate plate portion 554 of the secondary plate-like appendage 550 may be an extension from the first longitudinal end portion 520a of the elongate plate-like fin body 520 via the first spacer support potion 556a of the secondary plate-like appendage 550. According to various embodiments, the first spacer support portion 556a may space the elongate plate portion 554 of the secondary plate-like appendage 550 from the first surface 522 of the elongate plate-like fin body 520. According to various embodiments, the elongate plate portion 554 of the secondary plate-like appendage 550 is oriented to extend in a parallel manner with respect to the elongate plate-like fin body 520. Accordingly, the elongate plate portion 554 of the secondary plate-like appendage 550 may be suspended by the first spacer support portion 556a of the secondary plate-like appendage 550 in a manner so as to lie within the space 552 (or the channel) defined by the elongate plate-like fin body 520, the first raised border 530 and the second raised border 540. Hence, the elongate plate portion 554 of the secondary plate-like appendage 550 may be supported by the first spacer support portion 556a of the secondary plate-like appendage 550 in a manner resembling a cantilever.
[00066] According to various embodiments, the elongate plate portion 554 of the secondary plate-like appendage 550 may include at least one through-hole 558. As shown, according to various embodiments, the elongate plate portion 554 of the secondary platelike appendage 550 may include one through-hole 558. According to various embodiments, the through-hole 558 may be of a rectangular shape, a rounded rectangular shape, a racetrack shape, an oblong shape, or any suitable shape. For example, as shown, the throughhole 558 may be of a rectangular shape.
[00067] According to various embodiments, the elongate plate-like fin body 520 may be shaped with a second longitudinal end portion 520b narrower than the first longitudinal end portion 520a. According to various embodiments, a width at the second longitudinal end portion 520b between the first longitudinal side 526 and the second longitudinal side 528 of the surface 522 of the elongate plate-like fin body 520 may be narrower than a width at the first longitudinal end portion 520a between the first longitudinal side 526 and the second longitudinal side 528 of the surface 522 of the elongate plate-like fin body 520. According to various embodiments, the elongate plate-like fin body 520 may be shaped with an expansion portion 520c between the second longitudinal end portion 520b and the first longitudinal end portion 520a. According to various embodiments, the expansion portion 520c of the elongate plate-like fin body 520 may include an S-curve profile. For example as shown, according to various embodiments, the second longitudinal side 528 of the first surface 522 of the elongate plate-like fin body 520 may be extending outwards in the Scurve profile along the expansion portion 520c from the second longitudinal end portion 520b to the first longitudinal end portion 520a, and the first longitudinal side 526 of the first surface 522 of the elongate plate-like fin body 520 may be extending longitudinally along a continuous straight line from the second longitudinal end portion 520b, through the expansion portion 520c, and to the first longitudinal end portion 520a.
[00068] According to various embodiments, the secondary plate-like appendage 550 may extend longitudinally along the expansion portion 520c of the elongate plate-like fin body 520. According to various embodiments, the secondary plate-like appendage 550 may be disposed to traverse longitudinally along and over the expansion portion 520c of the elongate plate-like fin body 520. Accordingly, the secondary plate-like appendage 550 may stretch from second longitudinal end portion 520b, over the expansion portion 520c, and to the first longitudinal end portion 520a.
[00069] The following examples pertain to various embodiments.
[00070] Example 1 is a heat sink, including:
a plurality of fins assembled together, each of the plurality of fins comprising a continuous solid elongate plate-like fin body having a first surface and a second surface opposite the first surface;
a first raised border along a first longitudinal side of the first surface of the elongate plate-like fin body;
a second raised border along a second longitudinal side of the first surface of the elongate plate-like fin body; and a secondary plate-like appendage disposed within a space defined by the elongate plate-like fin body, the first raised border and the second raised border, wherein a first fin of the plurality of fins is assembled to a second fin of the plurality of fins with the first raised border at the first longitudinal side of the first surface of the first fin and the second raised border at the second longitudinal side of the first surface of the first fin respectively engaged with first and second longitudinal sides of the second surface of the second fin in a manner so as to form a hollow longitudinal tunnel enclosed by the first fin and the second fin, wherein the secondary plate-like appendage of the first fin is oriented to longitudinally divide at least a portion of the hollow longitudinal tunnel.
[00071] In Example 2, the subject matter of Example 1 may optionally include that the hollow longitudinal tunnel may be defined by the first surface of the elongate plate-like fin body of the first fin, the first raised border of the first fin, the second raised border of the second fin, and the second surface of the elongate plate-like fin body of the second fin. [00072] In Example 3, the subject matter of Example 1 or Example 2 may optionally include that the secondary plate-like appendage further including a flap that may be folded along the upper edge of the first raised border at the first longitudinal side of the first surface of the elongate plate-like-fin body to slant towards the second longitudinal side of the first surface of the elongate plate-like fin body.
[00073] In Example 4, the subject matter of any one of Examples 1 to 3 may optionally include that the elongate plate-like fin body may be shaped with a second longitudinal end portion narrower than a first longitudinal end portion, and with an expansion portion between the second longitudinal end portion and the first longitudinal end portion.
[00074] In Example 5, the subject matter of Example 4 may optionally include that the secondary plate-like appendage may extend longitudinally along the expansion portion.
[00075] In Example 6, the subject matter of Example 4 or 5 may optionally include that the expansion portion may include a linear expansion profile.
[00076] In Example 7, the subject matter of any one of Examples 2 to 6 may optionally include that each fin may be formed from a single sheet metal cut into a shape having the first raised border and the second raised border adjoining the elongate plate-like fin body and the secondary plate-like appendage adjoining the first raised border, wherein the first raised border may be folded with respect to the elongate plate-like fin body along the first longitudinal side of the first surface of the elongate plate-like body, the second raised border may be folded with respect to the elongate plate-like fin body along the second longitudinal side of the first surface of the elongate plate-like body, and the secondary plate-like appendage may be folded with respect to the first raised border along the upper edge of the first raised border.
[00077] In Example 8, the subject matter of Example 1 may optionally include that the secondary plate-like appendage may include an elongate plate portion; and a first spacer support portion at a first longitudinal end of the elongate plate portion, wherein the first longitudinal end of the elongate plate portion of the secondary plate-like appendage may be attached to the first surface at a first longitudinal end portion of the elongate plate-like fin body via the first spacer support potion of the secondary platelike appendage in a manner so as to be spaced from the elongate plate-like fin body and to extend in a parallel manner with respect to the elongate plate-like fin body.
[00078] In Example 9, the subject matter of Example 8 may optionally include that the elongate plate portion may include at least one through-hole.
[00079] In Example 10, the subject matter of Example 8 or 9 may optionally include that the first spacer support portion may include at least one through-hole.
[00080] In Example 11, the subject matter of any one of Examples 8 to 10 may optionally include that the secondary plate-like appendage may further include a second spacer support portion at a second longitudinal end of the elongate plate portion.
[00081] In Example 12, the subject matter of any one of Examples 8 to 11 may optionally include that the elongate plate portion may be of a rectangular shape.
[00082] In Example 13, the subject matter of any one of Examples 8 to 12 may optionally include that the elongate plate-like fin body may be shaped with a second longitudinal end portion narrower than the first longitudinal end portion, and with an expansion portion between the second longitudinal end portion and the first longitudinal end portion.
[00083] In Example 14, the subject matter of Example 13 may optionally include that the elongate plate portion of the secondary plate-like appendage may extend longitudinally along the first longitudinal end portion of the elongate plate-like fin body and the expansion portion of the elongate plate-like fin body.
[00084] In Example 15, the subject matter of Example 13 or 14 may optionally include that the expansion portion may include an S-curve profile.
[00085] In Example 16, the subject matter of any one of Examples 8 to 12 may optionally include that the elongate plate-like fin body may be shaped with the first longitudinal end portion and a middle portion having a uniform width.
[00086] In Example 17, the subject matter of claim 16 may optionally include that the elongate plate portion of the secondary plate-like appendage may extends longitudinally along the first longitudinal end portion and the middle portion.
[00087] Various embodiments have provided a heat sink which may increase the heat exchange area and reduce system noise caused by airflow passing the fins of the heat sink. Various embodiments have also provided a heat sink which is easy to manufacture and adaptable to space constraints within a laptop. Various embodiments have provided an advantageous means for optimizing the thermal solutions for laptop.
[00088] While the invention has been particularly shown and described with reference to specific embodiments, it should be understood by those skilled in the art that various changes, modification, variation in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims. The scope of the invention is thus indicated by the appended claims and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced.

Claims (5)

  1. Claims
    1. A heat sink comprising:
    a plurality of fins assembled together, each of the plurality of fins comprising a continuous solid elongate plate-like fin body having a first surface and a second surface opposite the first surface;
    a first raised border along a first longitudinal side of the first surface of the elongate plate-like fin body;
    a second raised border along a second longitudinal side of the first surface of the elongate plate-like fin body; and a secondary plate-like appendage disposed within a space defined by the elongate plate-like fin body, the first raised border and the second raised border, wherein a first fin of the plurality of fins is assembled to a second fin of the plurality of fins with the first raised border at the first longitudinal side of the first surface of the first fin and the second raised border at the second longitudinal side of the first surface of the first fin respectively engaged with first and second longitudinal sides of the second surface of the second fin in a manner so as to form a hollow longitudinal tunnel enclosed by the first fin and the second fin, wherein the secondary plate-like appendage of the first fin is oriented to longitudinally divide at least a portion of the hollow longitudinal tunnel.
  2. 2. The heat sink as claimed in claim 1, wherein the hollow longitudinal tunnel is defined by the first surface of the elongate plate-like fin body of the first fin, the first raised border of the first fin, the second raised border of the second fin, and the second surface of the elongate plate-like fin body of the second fin.
  3. 3. The heat sink as claimed in claim 1 or 2, wherein the secondary plate-like appendage includes a flap that is folded along the upper edge of the first raised border at
    2020100615 22 Apr 2020 the first longitudinal side of the first surface of the elongate plate-like-fin body to slant towards the second longitudinal side of the first surface of the elongate plate-like fin body.
  4. 4. The heat sink as claimed in any one of claims 1 to 3, wherein the elongate platelike fin body is shaped with a second longitudinal end portion narrower than a first longitudinal end portion and an expansion portion between the second longitudinal end portion and the first longitudinal end portion.
  5. 5. The heat sink as claimed in claim 4, wherein the secondary plate-like appendage extends longitudinally along the expansion portion.
AU2020100615A 2020-04-22 2020-04-22 Heat sink Active AU2020100615A4 (en)

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DE202021101747.3U DE202021101747U1 (en) 2020-04-22 2021-03-31 Heat sink
TW110204028U TWM614491U (en) 2020-04-22 2021-04-14 Heat sink
CN202120821019.8U CN215121666U (en) 2020-04-22 2021-04-21 Heat radiator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112739156A (en) * 2020-12-09 2021-04-30 阳光电源股份有限公司 Heat dissipation module, radiator and power equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112739156A (en) * 2020-12-09 2021-04-30 阳光电源股份有限公司 Heat dissipation module, radiator and power equipment

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DE202021101747U1 (en) 2021-05-10
CN215121666U (en) 2021-12-10

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