U.S. patent application number 15/972233 was filed with the patent office on 2019-11-07 for heat dissipation unit connection reinforcement structure.
The applicant listed for this patent is ASIA VITAL COMPONENTS CO., LTD.. Invention is credited to Han-Min Liu, Jian Zhang.
Application Number | 20190343021 15/972233 |
Document ID | / |
Family ID | 68384092 |
Filed Date | 2019-11-07 |
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United States Patent
Application |
20190343021 |
Kind Code |
A1 |
Zhang; Jian ; et
al. |
November 7, 2019 |
HEAT DISSIPATION UNIT CONNECTION REINFORCEMENT STRUCTURE
Abstract
A heat dissipation unit connection reinforcement structure
includes a case, at least one reinforcement structure and at least
one heat pipe. The case has a case chamber and at least one opening
formed through a top side of the case in communication with the
case chamber. The reinforcement structure has a reinforcement main
body correspondingly disposed on the opening. The reinforcement
main body has a connection hole in communication with the case
chamber. The heat pipe has a heat pipe chamber. One end of the heat
pipe is inserted in the corresponding connection hole. The heat
pipe chamber is in communication with the case chamber. The inner
circumference of the reinforcement main body is tightly attached to
and connected with an outer side of the corresponding heat
pipe.
Inventors: |
Zhang; Jian; (New Taipei
City, TW) ; Liu; Han-Min; (New Taipei City,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ASIA VITAL COMPONENTS CO., LTD. |
New Taipei City |
|
TW |
|
|
Family ID: |
68384092 |
Appl. No.: |
15/972233 |
Filed: |
May 7, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F28D 2021/0029 20130101;
F28D 15/0275 20130101; F28F 3/12 20130101; H05K 7/20336 20130101;
H01L 21/4882 20130101; F28D 15/04 20130101; F28D 15/046 20130101;
H01L 23/427 20130101 |
International
Class: |
H05K 7/20 20060101
H05K007/20; F28D 15/02 20060101 F28D015/02; F28D 15/04 20060101
F28D015/04 |
Claims
1. A heat dissipation unit connection reinforcement structure
comprising: a case having a case chamber and at least one opening,
a working fluid being contained in the case chamber, a case
capillary structure being formed on an inner wall of the case
chamber, the at least one opening being formed through a top side
of the case in communication with the case chamber; at least one
reinforcement structure having a reinforcement main body
correspondingly disposed on the at least one opening, the
reinforcement main body having a connection hole formed through the
reinforcement main body and an inner circumference, the connection
hole communicating with the corresponding case chamber; and at
least one heat pipe, the heat pipe having a closed end, an open end
and a heat pipe chamber, the open end of the heat pipe being
inserted in the corresponding connection hole, the inner
circumference of the reinforcement main body being tightly attached
to an outer side of the corresponding heat pipe, the heat pipe
chamber being positioned between the open end and the closed end in
communication with the case chamber through the open end, a heat
pipe capillary structure being formed on an inner side of the heat
pipe in connection with the case capillary structure in the case
chamber.
2. The heat dissipation unit connection reinforcement structure as
claimed in claim 1, wherein the reinforcement main body upward
extends from the top side of the case in adjacency to a periphery
of the at least one opening.
3. The heat dissipation unit connection reinforcement structure as
claimed in claim 1, wherein the case is formed with at least one
connection sink, the at least one connection sink being recessed on
the top side of the case in adjacency to the at least one
opening.
4. The heat dissipation unit connection reinforcement structure as
claimed in claim 3, wherein the reinforcement main body has a
mating section and a reinforcement connection section, the mating
section horizontally outward extending from an outer circumference
of the reinforcement connection section and being correspondingly
connected with the at least one connection sink, an upper side of
the mating section being flush with the adjacent top side of the
case, the connection hole being formed through the reinforcement
connection section, the inner circumference of the reinforcement
connection section being tightly attached to and connected with the
outer side of the corresponding heat pipe.
5. The heat dissipation unit connection reinforcement structure as
claimed in claim 4, wherein the reinforcement main body has a hub
section downward protruding from a bottom end of the reinforcement
connection section, the hub section being correspondingly inserted
with an inner circumference of the at least one opening, an inner
circumference of the hub section being tightly attached to and
connected with the outer side of the corresponding heat pipe.
6. The heat dissipation unit connection reinforcement structure as
claimed in claim 1, wherein an extension section integrally outward
extends from the open end of the heat pipe, the extension section
extending into the case chamber to directly abut against the bottom
side of the case chamber, the heat pipe capillary structure
extending from the closed end toward the open end into direct
connection and contact with the case capillary structure of the
bottom side of the case chamber.
7. The heat dissipation unit connection reinforcement structure as
claimed in claim 1, wherein the heat pipe capillary structure on
the inner side of the open end of the heat pipe is in connection
with the adjacent case capillary structure on the top side of the
case chamber and the heat pipe capillary structure on the inner
side of the extension section is in connection with the adjacent
case capillary structure on the bottom side of the case
chamber.
8. The heat dissipation unit connection reinforcement structure as
claimed in claim 1, wherein the case is a vapor chamber or a heat
plate.
9. The heat dissipation unit connection reinforcement structure as
claimed in claim 1, wherein the reinforcement main body is made of
metal material.
10. The heat dissipation unit connection reinforcement structure as
claimed in claim 6, wherein a notch is formed between the open end
and the extension section.
11. The heat dissipation unit connection reinforcement structure as
claimed in claim 1, wherein the case has a bottom side, a periphery
and a sealing tube, the periphery being surroundingly disposed
between the top side and the bottom side, the sealing tube passing
through the periphery in communication with the case chamber.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates generally to a heat
dissipation unit connection reinforcement structure, and more
particularly to a heat dissipation unit connection reinforcement
structure, which can increase the connection strength and
connection area of the heat dissipation unit.
2. Description of the Related Art
[0002] Along with the current trend to development lighter and
lighter and thinner and thinner electronic apparatuses, the sizes
of the respective electronic components of the electronic
apparatuses have been minified. However, the minimization of the
sizes of the electronic apparatuses makes it hard to dissipate the
heat generated by the electronic components. As a result, the heat
generated by the electronic components has become a major obstacle
to improvement of the performance of the electronic apparatuses and
systems. In order to effectively solve the heat dissipation problem
of the electronic components of the electronic apparatuses, many
manufacturers have developed various vapor chambers and heat pipes
with better heat conduction performance so as to solve the heat
dissipation problem at the present stage.
[0003] A vapor chamber includes a rectangular case having an
internal chamber. A working fluid is filled in the chamber and a
capillary structure is disposed on the wall face of the chamber.
One side (the evaporation section) of the case is attached to a
heat generation component (such as a central processing unit, a
Northbridge/Southbridge chipset or a transistor) to absorb the heat
generated by the heat generation component. At this time, the
liquid working fluid is evaporated and converted into vapor working
fluid on the evaporation section of the case to transfer the heat
to the condensation section of the case. The vapor working fluid is
cooled and condensed into liquid working fluid on the condensation
section. The liquid working fluid then flows back to the
evaporation section due to gravity or capillary attraction to
continue the vapor-liquid circulation. Accordingly, the heat can be
spread and dissipated.
[0004] The working principle and theoretic structure of the heat
pipe are identical to those of the vapor chamber. Metal powder is
filled into the interior of the circular heat pipe and sintered to
form an annular capillary structure on the inner wall of the heat
pipe. Then the heat pipe is vacuumed and a working fluid is filled
into the heat pipe. Finally, the heat pipe is sealed to form the
heat pipe structure. After the liquid working fluid is heated and
evaporated into vapor working fluid on the evaporation section, the
vapor working fluid is spread from the evaporation section to the
condensation end. At this time, the vapor working fluid is
gradually cooled and condensed into liquid working fluid. Then the
liquid working fluid flows back to the evaporation section through
the capillary structure.
[0005] In comparison with the heat pipe, the vapor chamber only
conducts heat in a manner different from the heat pipe. The vapor
chamber conducts heat in a two-dimensional manner, that is, in a
face-to-face manner, while the heat pipe conducts heat in a
one-dimensional manner, (that is, conducts heat to a remote end to
dissipate the heat). It has become insufficient to simply provide a
heat pipe or a vapor chamber for the current electronic component
to dissipate the heat.
[0006] It is therefore tried by the applicant to provide a heat
dissipation unit connection reinforcement structure, in which the
heat pipe and the vapor chamber are combined with each other and
co-used to greatly enhance the heat transfer efficiency and
effectively solve the heat dissipation problem of high-power
electronic components.
SUMMARY OF THE INVENTION
[0007] It is therefore a primary object of the present invention to
provide a heat dissipation unit connection reinforcement structure,
which can increase the connection strength of the heat dissipation
unit.
[0008] It is a further object of the present invention to provide
the above heat dissipation unit connection reinforcement structure,
which can increase the connection area of the heat dissipation unit
so as to securely connect and protect the heat dissipation
unit.
[0009] It is still a further object of the present invention to
provide the above heat dissipation unit connection reinforcement
structure, which can enhance the pressure resistance effect of the
saturated vapor pressure.
[0010] It is still a further object of the present invention to
provide the above heat dissipation unit connection reinforcement
structure, in which the heat pipe and the case communicate with
each other so that a heat pipe capillary structure in the heat pipe
is connected with a case capillary structure in the case to enhance
the heat transfer efficiency.
[0011] To achieve the above and other objects, the heat dissipation
unit connection reinforcement structure of the present invention
includes a case, at least one reinforcement structure and at least
one heat pipe. The case has a case chamber and at least one
opening. A working fluid is contained in the case chamber. A case
capillary structure is formed on an inner wall of the case chamber.
The at least one opening is formed through a top side of the case
in communication with the case chamber. The at least one
reinforcement structure has a reinforcement main body
correspondingly disposed on the at least one opening. The
reinforcement main body has a connection hole formed through the
reinforcement main body. The reinforcement main body has an inner
circumference. The connection hole communicates with the
corresponding case chamber. The heat pipe has a closed end, an open
end and a heat pipe chamber. The open end of the heat pipe is
inserted in the corresponding connection hole. The inner
circumference of the reinforcement main body is mated with an outer
side of the corresponding heat pipe. The heat pipe chamber is
positioned between the open end and the closed end in communication
with the case chamber through the open end. A heat pipe capillary
structure is formed on an inner wall of the heat pipe chamber in
connection with the corresponding case capillary structure. By
means of the structural design of the present invention, the
connection strength and connection area of the heat dissipation
unit are effectively increased. Moreover, the present invention
provides protection effect for the heat dissipation unit and has
better pressure resistance.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The structure and the technical means adopted by the present
invention to achieve the above and other objects can be best
understood by referring to the following detailed description of
the preferred embodiments and the accompanying drawings,
wherein:
[0013] FIG. 1 is a perspective assembled view of a first embodiment
of the present invention;
[0014] FIG. 2 is a perspective exploded view of the first
embodiment of the present invention;
[0015] FIG. 2A is a sectional assembled view of the first
embodiment of the present invention;
[0016] FIG. 3 is a perspective assembled view of a second
embodiment of the present invention;
[0017] FIG. 4 is a perspective exploded view of the second
embodiment of the present invention; and
[0018] FIG. 4A is a sectional assembled view of the second
embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0019] Please refer to FIGS. 1, 2 and 2A. FIG. 1 is a perspective
assembled view of a first embodiment of the present invention. FIG.
2 is a perspective exploded view of the first embodiment of the
present invention. FIG. 2A is a sectional assembled view of the
first embodiment of the present invention. According to the first
embodiment, the heat dissipation unit connection reinforcement
structure of the present invention includes a case 1, at least one
reinforcement structure and at least one heat pipe 3. In this
embodiment, the case 1 is a vapor chamber, (which can be made of
gold, silver, copper, aluminum, stainless steel, titanium or
ceramic material). The case 1 has a top side 10, a bottom side 11,
a periphery 12, a case chamber 13, a sealing tube 18 and at least
one opening 14. The periphery 12 is surroundingly disposed between
the top side 10 and bottom side 11 of the case 1. The sealing tube
18 passes through the periphery 12 in communication with the case
chamber 13. The case chamber 13 is defined between the top side 10,
the bottom side 11 and the periphery 12. A working fluid is
contained in the case chamber 13. A case capillary structure 16 is
formed on the inner wall of the case chamber 13. The working fluid
is filled through the sealing tube 18 into the case chamber 13 of
the case 1. After the working fluid is filled into the case chamber
13, the sealing tube 18 is sealed. In this embodiment, the case
capillary structure 16 is, but not limited to, a sintered powder
body. The case 1 can be alternatively a heat plate or a flat-plate
heat pipe 3.
[0020] The opening 14 is formed through the top side 10 of the case
1 in communication with the case chamber 13. In this embodiment,
there are, but not limited to, four openings 14 for illustration
purposes. In practice, the number of the openings 14 can be one or
more than one. The number of the openings 14 is equal to the number
of the corresponding heat pipes 3. For example, one opening 14 is
mated with one corresponding heat pipe 3, two openings 14 are mated
with two corresponding heat pipes 3, and so on. In addition, the
case 1 has at least one connection sink 17. The connection sink 17
is recessed on the top side 10 of the case 1 in adjacency to the
opening 14. In this embodiment, there are four connection sinks 17
in accordance with the four corresponding openings 14. The
reinforcement structure has a reinforcement main body 2. The
reinforcement main body 2 is made of metal material (such as gold,
silver, copper, aluminum, stainless steel and titanium). The
reinforcement main body 2 is disposed on the corresponding opening
14. In this embodiment, there are four reinforcement main bodies 2
respectively connected on four corresponding openings 14 by means
of such as welding or diffusion bonding, whereby the reinforcement
main bodies 2 are integrally connected on the top side 10 of the
case 1 in adjacency to the corresponding openings 14.
[0021] The reinforcement main body 2 has a connection hole 21, a
mating section 24, an inner circumference 22, an outer
circumference 23 and a reinforcement connection section 25. The
mating section 24 horizontally outward extends from the outer
circumference 23 of the reinforcement connection section 25 and is
connected with the corresponding connection sink 17 of the case 1.
An upper side of the mating section 24 is flush with the adjacent
top side 10 of the case 1. The connection hole 21 is formed through
the reinforcement connection section 25 of the reinforcement main
body 2 for the corresponding heat pipe 3 to insert in. The
connection hole 21 communicates with the corresponding case chamber
13. In addition, the reinforcement main body 2 has a hub section 26
downward protruding from a bottom end of the reinforcement
connection section 25. The hub section 26 is inserted with an inner
circumference of the corresponding opening 14.
[0022] In this embodiment, there are four bendable heat pipes 3 for
illustration purposes. Each heat pipe 3 has a closed end 32, an
open end 33, a heat pipe capillary structure 36 and a heat pipe
chamber 35. In this embodiment, the heat pipe capillary structure
36 a sintered powder body. The heat pipe capillary structure 36 is
formed on an inner side 312 of the heat pipe 3. The heat pipe
chamber 35 is positioned between the closed end 32 and the open end
33 in communication with the open end 33. The open end 33 of the
heat pipe 3 is inserted in the corresponding connection hole 21 of
the reinforcement main body 2, whereby the inner circumference 22
of the reinforcement connection section 25 and the inner
circumference 22 of the hub section 26 of the reinforcement main
body 2 are tightly attached to and connected with the outer side
311 of the corresponding heat pipe 3. The heat pipe chamber 35
communicates with the case chamber 13 through the open end 33. The
case chamber 13 perpendicularly communicates with the heat pipe
chamber 35. In addition, the rest parts (including the closed end
32) of the heat pipe 3 not in contact with the reinforcement main
body 2 is exposed to outer side of the case 1. The heat pipe 3 is
integrally connected with the reinforcement main body 2 by means of
welding or diffusion bonding.
[0023] As aforesaid, the heat pipe 3 and the case 1 of the present
invention are connected into an integrated body in communication
with each other, whereby there is no contact interface thermal
resistance between the heat pipe 3 and the case 1. Also, referring
to FIG. 2A, the axial sectional thickness of the reinforcement
connection section 25 of the reinforcement main body 2 is larger
than the axial sectional thickness of the heat pipe 3 and the axial
sectional thickness of the case 1. Therefore, the thickness of the
junction between the reinforcement main body 2 and the
corresponding heat pipe 3 is increased. For example, the axial
sectional thickness of the reinforcement connection section 25 of
the reinforcement main body 2 is such as 3.3 mm and the axial
sectional thickness of the corresponding heat pipe 3 is such as 0.3
mm so that the axial sectional thickness of the junction between
the reinforcement main body 2 and the corresponding heat pipe 3 is
3.6 mm. In this case, the connection strength and connection area
between the reinforcement main body 2 and the heat pipe 3 can be
effectively increased. In addition, in the assembling and
manufacturing process and in use of the heat dissipation unit
connection reinforcement structure, by means of the reinforcement
main body 2, the junction is effectively prevented from being
damaged and a protection effect is provided for the junction.
Furthermore, when the case 1 absorbs heat, the working fluid in the
case chamber 13 is heated and evaporated into vapor. At this time,
by means of the design that the reinforcement main body 2 is
tightly connected around the outer side 311 of the corresponding
heat pipe 3, the pressure resistance requirement of the saturated
vapor pressure can be enhanced. The axial sectional thickness of
the reinforcement main body 2 and the reinforcement connection
section 25 thereof is not limited to 3.3 mm. In practice, according
to the connection strength and the pressure resistance requirement
of the saturated vapor pressure, a user can adjust the axial
sectional thickness of the reinforcement main body 2 and the
reinforcement connection section 25 thereof. For example, the axial
sectional thickness of the reinforcement main body 2 and the
reinforcement connection section 25 can be 1 mm or more than 1
mm.
[0024] In a preferred embodiment, the case capillary structure 16
and the heat pipe capillary structure 36 can be alternatively
selected from a group consisting of mesh body, fiber body,
channeled body and complex capillary structure.
[0025] Moreover, an extension section 34 integrally outward extends
from the open end 33 of the heat pipe 3. The extension section 34
extends into the case chamber 13 to directly abut against the
bottom side 11 of the case chamber 13. That is, the extension
section 34 downward extends from the open end 33 in the connection
hole 21 toward the bottom side 11 of the case chamber 13 to connect
with the bottom side 11 of the case chamber 13. In addition, a
notch or an opening or a perforation is formed between the open end
33 and the extension section 34. The extension section 34 is a part
of the heat pipe 3 so that the inner side of the extension section
34 is exactly the inner side 312 of the heat pipe 3. The outer side
311 of the heat pipe 3 is connected with the inner circumference 22
of the reinforcement main body 2 to form the support structure in
the case chamber 13 for supporting the case chamber 13. Therefore,
in the present invention, there is no copper column in the case
chamber 13 for supporting the case chamber 13 as in the
conventional device. Accordingly, the cost is saved.
[0026] Please now refer to FIGS. 1 and 2A. The heat pipe capillary
structure 36 extends from the closed end 32 toward the open end 33
into direct connection and contact with the case capillary
structure 16 of the bottom side 11 of the corresponding case
chamber 13. As shown in the drawings, the heat pipe capillary
structure 36 on the inner side 312 of the extension section 34 is
in direct connection and contact with the case capillary structure
16 on the bottom side 11 of the case chamber 13. The heat pipe
capillary structure 36 on the inner side 312 of the open end 33 of
the heat pipe 3 is in direct connection and contact with the
adjacent case capillary structure 16 on the top side 10 of the case
chamber 13. Therefore, by means of the design that the heat pipe
capillary structure 36 is in connection and contact with the case
capillary structure 16, the heat transfer efficiency and heat
spreading effect can be enhanced to more effectively enhance the
vapor-liquid circulation efficiency.
[0027] When the outer face of the bottom side 11 of the case 1 is
attached to a corresponding heat generation component (such as a
central processing unit or an MCU or any other electronic
component), the bottom side 11 of the case 1 will absorb the heat
generated by the heat generation component. At this time, the
working fluid on the case capillary structure 16 on the bottom side
11 of the case chamber 13 is heated and evaporated into vapor
working fluid (or so-called vapor-phase working fluid). The vapor
working fluid will flow in a direction to the top side 10 of the
case chamber 13. Also, part of the vapor working fluid will pass
through the open end 33 of the heat pipe 3 to flow into the heat
pipe chamber 35. Then, the vapor working fluid is condensed on the
top side 10 of the case chamber 13 and the closed end 32 of the
heat pipe chamber 35 and converted into cooled working fluid (or
so-called liquid-phase working fluid). At this time, by means of
the capillary attraction of the heat pipe capillary structure 36,
the cooled working fluid on the closed end 32 of the heat pipe
chamber 35 quickly flows back to the case capillary structure 16 on
the bottom side 11 of the case chamber 13. Therefore, the working
fluid is continuously vapor-liquid circulated within the case
chamber 13 and the heat pipe chamber 35 to achieve better heat
dissipation effect.
[0028] Please now refer to FIGS. 3, 4A and 4B. FIG. 3 is a
perspective assembled view of a second embodiment of the present
invention. FIG. 4 is a perspective exploded view of the second
embodiment of the present invention. FIG. 4A is a sectional
assembled view of the second embodiment of the present invention.
The structure and connection relationship and effect of the case 1,
the heat pipe 3 and the reinforcement main body 2 of the second
embodiment are substantially identical to the structure and
connection relationship and effect of the case 1, the heat pipe 3
and the reinforcement main body 2 of the first embodiment and thus
will not be redundantly described hereinafter. In the second
embodiment, the top side 10 of the case 1 is free from the
connection sink 17 and the reinforcement main body 2 (including the
reinforcement connection section 25, the mating section 24 and the
hub section 26). Instead, the case 1 is such redesigned that the
reinforcement main body 2 is a part of the case 1 itself, (that is,
the reinforcement main body 2 and the case 1 are integrally
formed). As shown in the drawings, the reinforcement main body 2
upward extends from the top side 10 of the case 1 in adjacency to
the periphery of the opening 14. The open end 33 of the heat pipe 3
is inserted in the corresponding connection hole 21 and the opening
14 in communication with the opening 14. Accordingly, the inner
circumference 22 of the reinforcement main body 2 and the inner
circumference of the opening 14 are tightly connected (or attached)
to the outer side 311 of the corresponding heat pipe 3.
[0029] The present invention has been described with the above
embodiments thereof and it is understood that many changes and
modifications in such as the form or layout pattern or practicing
step of the above embodiments can be carried out without departing
from the scope and the spirit of the invention that is intended to
be limited only by the appended claims.
* * * * *