U.S. patent application number 14/050551 was filed with the patent office on 2014-07-31 for heat dissipation apparatus for expansion base.
This patent application is currently assigned to HON HAI PRECISION INDUSTRY CO., LTD.. The applicant listed for this patent is HON HAI PRECISION INDUSTRY CO., LTD.. Invention is credited to Chih-Hang CHAO, Wei-Cheng CHENG.
Application Number | 20140209283 14/050551 |
Document ID | / |
Family ID | 51221665 |
Filed Date | 2014-07-31 |
United States Patent
Application |
20140209283 |
Kind Code |
A1 |
CHAO; Chih-Hang ; et
al. |
July 31, 2014 |
HEAT DISSIPATION APPARATUS FOR EXPANSION BASE
Abstract
A heat dissipation apparatus includes an expansion base, an air
duct, a fan, a heat sink, and a portable device. A number of air
inlet slots is defined in the expansion base. A first air inlet
opening and a number of diagonal air outlet slots are defined in
the air duct. A third air inlet opening and a third air outlet
opening are defined in the portable device. The fan generates
airflow through the portable device in such a manner that airflow
flows from the expansion base outside is sucked into and blown out
of the air duct via a first airflow passage. The portable device
guides airflow in and out of the portable device via a second
airflow passage.
Inventors: |
CHAO; Chih-Hang; (New
Taipei, TW) ; CHENG; Wei-Cheng; (New Taipei,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HON HAI PRECISION INDUSTRY CO., LTD. |
New Taipei |
|
TW |
|
|
Assignee: |
HON HAI PRECISION INDUSTRY CO.,
LTD.
New Taipei
TW
|
Family ID: |
51221665 |
Appl. No.: |
14/050551 |
Filed: |
October 10, 2013 |
Current U.S.
Class: |
165/121 |
Current CPC
Class: |
G06F 1/203 20130101 |
Class at
Publication: |
165/121 |
International
Class: |
F28F 3/02 20060101
F28F003/02 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 29, 2013 |
TW |
102103378 |
Claims
1. A heat dissipation apparatus, comprising: an expansion base
comprising a base body, an air inlet slot defined at one side of
the base body; a first inserting slot and a second inserting slot
defined at a top of the base body; an air duct inserted in the
first inserting slot, the air duct comprising a duct body, a first
air inlet opening defined at a bottom of the duct body, a plurality
of air outlet slots defined diagonally across a top of the duct
body; a fan fixed in the duct body; and a portable device
configured to be inserted in the second inserting slot, a third air
inlet opening and a third air outlet opening defined in the
portable device, a first heat dissipation element and a second heat
dissipation element mounted on the portable device, and a heat sink
mounted on the first heat dissipation element and the second heat
dissipation element; wherein a first airflow passage is defined
between the air inlet slot, the fan, the first air inlet opening,
the air duct, and the plurality of air outlet slots; the fan is
adapted to generate airflow through the portable device so that
airflow flows from the expansion base outside is sucked into and
blown out of the air duct via the first airflow passage; a second
airflow passage is defined between the third air inlet opening, the
heat sink, and the third air outlet opening; the portable device is
configured to guide airflow in and out of the portable device via
the second airflow passage.
2. The heat dissipation apparatus of claim 1, wherein the fan
comprises a shell and a rotatable fan blade module; a second air
inlet opening is defined at one side of the shell; and a second air
outlet opening is defined at a top of the shell.
3. The heat dissipation apparatus of claim 2, wherein the second
air inlet opening allows air to flow in a first direction which is
in line with a rotating axle of the fan blade module; and the
second air outlet opening allows air to flow in a second direction
which is substantially perpendicularly to the first direction.
4. The heat dissipation apparatus of claim 3, wherein a length of
the second air outlet opening is equal to a length of the plurality
of air outlet slots.
5. The heat dissipation apparatus of claim 4, wherein the portable
device comprises a main body; the third air inlet opening is
defined at one side of the main body; and the third air outlet
opening is defined at a top of the main body.
6. The heat dissipation apparatus of claim 5, wherein the air duct
further comprises a first air inlet channel defined by the first
air inlet opening and a first air outlet channel defined by the
plurality of air outlet slots, the first air inlet channel being
substantially parallel to the first air outlet channel; the
portable device further comprises a second air inlet channel
defined by the third air inlet opening and a second air outlet
channel defined by the third air outlet opening, the second air
inlet channel being substantially perpendicularly to the second air
outlet channel.
7. The heat dissipation apparatus of claim 5, wherein the first air
inlet opening is communicated with the plurality of air outlet
slots; and the third air inlet opening is communicated with the
third air outlet opening.
8. The heat dissipation apparatus of claim 7, wherein a length of
the first inserting slot is less than a length of the second
inserting slot; a length of the first inserting slot is equal to a
length of the duct body; a width of the first inserting slot is
equal to a thickness of the duct body; a length of the second
inserting slot is equal to a length of the portable device; and a
width of the second inserting slot is equal to a thickness of the
portable device.
9. A heat dissipation apparatus, comprising: an expansion base
defining an air inlet slot at one side of the expansion base, a
first inserting slot and a second inserting slot being defined at a
top of the expansion base; an air duct inserted in the first
inserting slot, the air duct defining a first air inlet opening at
a bottom of the air duct and a plurality of air outlet slots
diagonally across a top of the air duct; a fan fixed in the duct
body, a second air inlet opening and a second air outlet opening
being defined in the fan; and a portable device configured to be
inserted in the second inserting slot, a third air inlet opening
and a third air outlet opening defined in the portable device, a
first heat dissipation element and a second heat dissipation
element mounted on the portable device, and a heat sink mounted on
the first heat dissipation element and the second heat dissipation
element; wherein a first airflow passage is defined between the air
inlet slot, the second air inlet opening, the fan, the second air
outlet opening, the first air inlet opening, the air duct, and the
plurality of air outlet slots; the fan is configured to generate
airflow through the portable device so that airflow flows from the
expansion base outside is sucked into and blown out of the air duct
via the first airflow passage; a second airflow passage is defined
between the third air inlet opening, the heat sink, and the third
air outlet opening; the portable device is configured to guide
airflow in and out of the portable device via the second airflow
passage.
10. The heat dissipation apparatus of claim 9, wherein the fan
comprises a shell and a rotatable fan blade module; the second air
inlet opening is defined at one side of the shell; and the second
air outlet opening is defined at a top of the shell.
11. The heat dissipation apparatus of claim 10, wherein the second
air inlet opening allows air to flow in a first direction which is
in line with a rotating axle of the fan blade module; and the
second air outlet opening allows air to flow in a second direction
which is substantially perpendicularly to the first direction.
12. The heat dissipation apparatus of claim 11, wherein a length of
the second air outlet opening is equal to a length of the plurality
of air outlet slots.
13. The heat dissipation apparatus of claim 12, wherein the
portable device comprises a main body; the third air inlet opening
is defined at one side of the main body; and the third air outlet
opening is defined at a top of the main body.
14. The heat dissipation apparatus of claim 13, wherein the air
duct further comprises a first air inlet channel defined by the
first air inlet opening and a first air outlet channel defined by
the plurality of air outlet slots, the first air inlet channel
being substantially parallel to the first air outlet channel; the
portable device further comprises a second air inlet channel
defined by the third air inlet opening and a second air outlet
channel defined by the third air outlet opening, the second air
inlet channel being substantially perpendicularly to the second air
outlet channel.
15. The heat dissipation apparatus of claim 13, wherein the first
air inlet opening is communicated with the plurality of air outlet
slots; and the third air inlet opening is communicated with the
third air outlet opening.
16. The heat dissipation apparatus of claim 15, wherein a length of
the first inserting slot is less than a length of the second
inserting slot; a length of the first inserting slot is equal to a
length of the duct body; a width of the first inserting slot is
equal to a thickness of the duct body; a length of the second
inserting slot is equal to a length of the portable device; and a
width of the second inserting slot is equal to a thickness of the
portable device.
Description
BACKGROUND
[0001] 1. Technical Field
[0002] The present disclosure relates to a heat dissipation
apparatus for an expansion base in portable devices.
[0003] 2. Description of Related Art
[0004] Panel computers include expansion bases to insert expansion
cards. However, panel computers generate large amounts of heat when
connected to expansion bases, which may be a hazard and cause a
reduction in the life of the panel computers.
[0005] Therefore, there is a need for improvement in the art.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Many aspects of the embodiments can be better understood
with reference to the following drawings. The components in the
drawings are not necessarily drawn to scale, the emphasis instead
being placed upon clearly illustrating the principles of the
embodiments. Moreover, in the drawings, like reference numerals
designate corresponding parts throughout the several views.
[0007] FIG. 1 is an isometric, exploded view of an embodiment of a
heat dissipation apparatus for an expansion base.
[0008] FIG. 2 is an enlarged view of a circled portion II of FIG.
1.
[0009] FIG. 3 is an assembled view of the heat dissipation
apparatus for an expansion base of FIG. 1.
[0010] FIG. 4 is a cross-sectional view of the heat dissipation
apparatus for an expansion base of FIG. 3, taken along line
IV-IV.
DETAILED DESCRIPTION
[0011] The disclosure is illustrated by way of example and not by
way of limitation in the figures of the accompanying drawings in
which like references indicate similar elements. It should be noted
that references to "an" or "one" embodiment in this disclosure are
not necessarily to the same embodiment, and such references mean
"at least one."
[0012] FIGS. 1 and 2 show a heat dissipation apparatus, which
includes an expansion base 10, an air duct 20, a fan 30, and a
portable device 40.
[0013] The expansion base 10 includes a base body 11. A plurality
of air inlet slots 12 is defined in one side of the base body 11. A
first inserting slot 13 and a second inserting slot 14 are defined
in a top of the base body 11. The first inserting slot 13 is
substantially parallel to the second inserting slot 14.
[0014] The air duct 20 includes a duct body 21. A first air inlet
opening 22 is defined in a bottom of the duct body 21. A plurality
of air outlet slots 23 is diagonally defined in a top of the duct
body 21. A first air inlet channel defined by the first air inlet
opening 22 is substantially parallel to a first air outlet channel
defined by the plurality of air outlet slots 23. The first air
inlet opening 22 communicates with the plurality of air outlet
slots 23. In this embodiment, a length of the first inserting slot
13 is less than a length of the second inserting slot 14. A length
of the first inserting slot 13 is substantially equal to a length
of the duct body 21, and a width of the first inserting slot 13 is
substantially equal to a thickness of the duct body 21. A length of
the second inserting slot 14 is substantially equal to a length of
the portable device 40, and a width of the second inserting slot 14
is substantially equal to a thickness of the portable device
40.
[0015] The fan 30 includes a shell 31 and a rotatable fan blade
module 32. A second air inlet opening 311 is defined in one side of
the shell 31. The shell 31 further defines a second air outlet
opening 312 in a top of the shell 31. The second air inlet opening
311 allows air to flow into the fan 30 along a first direction,
which is in line with a rotating axle of the fan blade module 32.
The second air outlet opening 312 allows air to flow out of the fan
30 along a second direction, which is substantially perpendicular
to the first direction. In this embodiment, a length of the second
air outlet opening 312 is substantially equal to a length of the
plurality of air outlet slots 23.
[0016] The portable device 40 includes a main body 41 and a cover
plate 42. The cover plate 42 is mounted on the main body 41. A
plurality of third air inlet openings 43 is defined in one side of
the main body 41. A plurality of third air outlet openings 44 is
defined in a top of the main body 41. A second air inlet channel
defined by the plurality of third air inlet openings 43 is
substantially perpendicular to a second air outlet channel defined
by the plurality of third air outlet openings 44. The plurality of
third air inlet openings 43 communicates with the plurality of
third air outlet openings 44. A first heat dissipation element 411
and a second heat dissipation element 412 are mounted on the main
body 41. A heat sink 413 is mounted on the first heat dissipation
element 411 and the second heat dissipation element 412 for
transmitting heat. In this embodiment, the first heat dissipation
element 411 is a CPU, and the second heat dissipation element 412
is a power control unit.
[0017] FIGS. 1 to 3 show that in assembly, the fan 30 is fixed in
the duct body 21 of the air duct 20, such that the second air
outlet opening 312 of the fan 30 is aligned with the plurality of
air outlet slots 23 of the duct body 21. The duct body 21 is
received in the first inserting slot 13, such that the first air
inlet opening 22 of the air duct 20 communicates with an inside of
the first inserting slot 13. The heat sink 413 is mounted on the
first heat dissipation element 411 and the second heat dissipation
element 412. The cover plate 42 is mounted on the main body 41 to
cover the first heat dissipation element 411, the second heat
dissipation element 412, and the heat sink 413. The portable device
40 is received in the second inserting slot 14. The cover plate 42
of the portable device 40 abuts against the duct body 21. The
plurality of air outlet slots 23 face the cover plate 42.
[0018] FIG. 4 shows that in operation, the first heat dissipation
element 411 and the second heat dissipation element 412 generate
large amounts of heat when the portable device 40 is powered on.
The heat generated by the first heat dissipation element 411 and
the second heat dissipation element 412 is transmitted to the heat
sink 413. A first amount of air from outside the expansion base 10
enters the portable device 40 via the plurality of third air inlet
openings 43 or the plurality of third air outlet openings 44. The
first amount of air displaces some heat accumulated in the heat
sink 413. The heated first amount of air then exits from the
portable device 40 through the plurality of third air outlet
openings 44 or the plurality of third air inlet openings 43. A
second amount of air from outside the expansion base 10 is sucked
into the fan 30 via the plurality of air inlet slots 12 and the
second air inlet opening 311. A speed of the second amount of air
is increased when passing through the fan 30. The second amount of
air is blown out of the fan 30 through the second air outlet
opening 312 toward the plurality of air outlet slots 23 of the air
duct 20. The second amount of air is diagonally blown out of the
air duct 20 through the plurality of air outlet slots 23. The
second amount of air is blown toward the cover plate 42 of the
portable device 40 to remove heat accumulated on the cover plate
42. Therefore, a temperature of the portable device 40 is further
decreased.
[0019] In this embodiment, the duct body 21 of the air duct 20 is
made of heat-conducting material. The heat accumulated on the cover
plate 42 of the portable device 40 is partially transmitted to the
duct body 21. The second amount of air passes through the duct body
21 and removes the heat accumulated on the duct body 21. Therefore,
the three described modes of heat dissipation significantly improve
a heat dissipation efficiency of the heat dissipation
apparatus.
[0020] Using a software application called ICEPAK to simulate the
efficiency of the heat dissipation apparatus, the following results
of an embodiment shown below were obtained. The simulated
conditions were set as follows: a power dissipation of the first
heat dissipation element 411 is 2 watts (W). A power dissipation of
a memory of the portable device 40 is 1.5 W. A power dissipation of
the second heat dissipation element 412 is 0.6 W. The fan 30 has a
dimension of 92 millimeters (mm).times.92 mm.times.25 mm
(length.times.width.times.height). A maximum air flow rate of the
fan 30 is 35.32 cubic feet per minute (cfm). A rated speed of the
fan 30 is 2000 revolutions per minute (rpm). A maximum static
pressure of the fan 30 is 0.084 inch-H.sub.2O.
[0021] The simulation according to the set conditions shows that
when using the heat dissipation apparatus of the disclosure, a
maximum temperature of the cover plate 42 of the portable device 40
is 45 degrees Celsius, a maximum temperature of the first heat
dissipation element 411 is 46 degrees Celsius, a maximum
temperature of the memory is 45.3 degrees Celsius, and a maximum
temperature of the second heat dissipation element 412 is 48.2
degrees Celsius. In contrast, when using another heat dissipation
apparatus, the back of the portable device 40 has a maximum
temperature of 45.9 degrees Celsius, the first heat dissipation
element 411 has a maximum temperature of 100.4 degrees Celsius, the
memory has a maximum temperature of 100.7 degrees Celsius, and the
second heat dissipation element 412 has a maximum temperature of
101.7 degrees Celsius. As can be seen, when using the heat
dissipation apparatus of the disclosure, the maximum temperature of
the portable device 40 is largely decreased, and heat dissipation
efficiency is improved.
[0022] Even though numerous characteristics and advantages of the
present disclosure have been set forth in the foregoing
description, together with details of the structure and function of
the disclosure, the disclosure is illustrative only, and changes
may be made in detail, especially in the matters of shape, size,
and the arrangement of parts within the principles of the
disclosure to the full extent indicated by the broad general
meaning of the terms in which the appended claims are
expressed.
* * * * *