U.S. patent application number 13/670459 was filed with the patent office on 2014-05-08 for band-type fan structure.
This patent application is currently assigned to ASIA VITAL COMPONENTS CO., LTD.. The applicant listed for this patent is ASIA VITAL COMPONENTS CO., LTD.. Invention is credited to Bor-Haw Chang, Liang-Ji Chang.
Application Number | 20140127016 13/670459 |
Document ID | / |
Family ID | 50622526 |
Filed Date | 2014-05-08 |
United States Patent
Application |
20140127016 |
Kind Code |
A1 |
Chang; Bor-Haw ; et
al. |
May 8, 2014 |
BAND-TYPE FAN STRUCTURE
Abstract
A band-type fan structure includes a transmission band body and
multiple blades. The transmission band body has a lengthwise
direction and a widthwise direction. The blades are side by side
disposed on the transmission band body in parallel to each other
and arranged in the lengthwise direction of the transmission band
body. Each two adjacent blades define therebetween a flow way. The
transmission band body is movable in the lengthwise direction,
whereby the blades are driven by the transmission band body to
transversely move to create an air volume. The band-type fan
structure has a greatly minified volume. Also, the band-type fan
structure overcomes the shortcoming of unstable operation of the
conventional fan caused by deflection of the blades.
Inventors: |
Chang; Bor-Haw; (New Taipei
City, TW) ; Chang; Liang-Ji; (New Taipei City,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ASIA VITAL COMPONENTS CO., LTD. |
New Taipei City |
|
TW |
|
|
Assignee: |
ASIA VITAL COMPONENTS CO.,
LTD.
New Taipei City
TW
|
Family ID: |
50622526 |
Appl. No.: |
13/670459 |
Filed: |
November 7, 2012 |
Current U.S.
Class: |
416/23 |
Current CPC
Class: |
F04D 33/00 20130101 |
Class at
Publication: |
416/23 |
International
Class: |
F01D 5/02 20060101
F01D005/02 |
Claims
1. A band-type fan structure comprising: a transmission band body
having a lengthwise direction and a widthwise direction; and
multiple blades side by side disposed on the transmission band body
in parallel to each other and arranged in the lengthwise direction
of the transmission band body, each two adjacent blades defining
therebetween a flow way, the transmission band body being movable
in the lengthwise direction, whereby the blades are driven by the
transmission band body to transversely move.
2. A band-type fan structure comprising: a transmission band body
having a lengthwise direction and a widthwise direction; and
multiple blades side by side disposed on the transmission band body
in parallel to each other and arranged in the lengthwise direction
of the transmission band body, each blade having a main body
disposed on a surface of the transmission band body and a first end
extending from the main body in the widthwise direction of the
transmission band body, each two adjacent blades defining
therebetween a flow way, the transmission band body being movable
in the lengthwise direction, whereby the blades are driven by the
transmission band body to transversely move.
3. The band-type fan structure as claimed in claim 2, further
comprising a case having at least one bottom board and two
sidewalls disposed on two opposite sides of the bottom board, the
bottom board and the sidewalls together defining a receiving space
for receiving the transmission band body and the blades, the
receiving space communicating with the flow ways between the
blades.
4. The band-type fan structure as claimed in claim 3, wherein the
surface of the transmission band body has multiple connected
sections arranged in the lengthwise direction, one face of the main
body of the blade, which face is proximal to the transmission band
body, has a connection section connected to the connected
section.
5. The band-type fan structure as claimed in claim 4, wherein the
connected section is an insertion hole or a threaded hole and the
connection section is an insertion pin or a screw, the connection
section being connected to the connected section by means of
insertion or screwing.
6. The band-type fan structure as claimed in claim 1, wherein the
blades are wing-shaped.
7. The band-type fan structure as claimed in claim 1, wherein the
blade further has a second end extending from the main body in the
widthwise direction of the transmission band body opposite to the
first end.
8. The band-type fan structure as claimed in claim 7, wherein the
first and second ends of the blade are made of flexible
material.
9. The band-type fan structure as claimed in claim 5, wherein the
lengthwise direction and the widthwise direction of the
transmission band body together define a passageway in
communication with the connected sections.
10. The band-type fan structure as claimed in claim 1, further
comprising a power member connected to the transmission band body,
whereby the blades can be driven by the transmission band body to
transversely move.
11. The band-type fan structure as claimed in claim 10, wherein the
power member has multiple transmission shafts and a power source,
the transmission shafts being positioned on two sides of the
passageway and connected with the power source.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates generally to a band-type fan
structure, and more particularly to a band-type fan structure,
which has a greatly minified volume. Also, the band-type fan
structure overcomes the shortcoming of unstable operation of the
conventional fan caused by deflection of the blades.
[0003] 2. Description of the Related Art
[0004] Along with the continuous advance of electronic technologies
and industries, the density of transistors of various chips (such
as central processor and execution unit) has been more and more
increased. This enables the central processor to process data at
higher and higher speed. However, the power consumption and heat
generated by the central processor have also become higher and
higher. In order to keep the central processor stably operating, it
has become an important topic how to develop high-efficiency heat
dissipation unit for dissipating the heat generated by the central
processor.
[0005] In order to keep a high-efficiency heat dissipation
function, the heat dissipation unit has inevitably become larger
and larger and heavier and heavier. However, in design of
electronic device such as laptop, tablet, intelligent mobile phone
and intelligent handheld electronic device, the limitation of space
is always a greatest bottleneck of the design process.
[0006] Please refer to FIG. 1, which is a perspective assembled
view of a conventional fan module 1. The fan module 1 includes a
centrifugal fan 10, a heat pipe 11 and a heat dissipation unit 12.
The centrifugal fan 10 serves to drive air to flow so as to carry
away the heat of the heat dissipation unit 12 and lower the
temperature. The performance of the fan module 1 is determined by
the wind pressure and air volume of the centrifugal fan 10 and the
heat exchange area of the heat dissipation unit. The larger the
heat exchange area of the heat dissipation unit 12 is, for example,
the longer the radiating fin is, the better the heat dissipation
effect of the heat dissipation unit 12 is. However, the increase of
the length of the radiating fin will lead to excessively large
total volume of the fan module. This fails to meet the requirements
for lightweight, slimness and miniaturization of the laptop.
[0007] In order to meet the requirements for lightweight, slimness
and miniaturization, the respective components are as minified as
possible. Therefore, the centrifugal fan is miniaturized. However,
due to the miniaturization of the volume, the blades of the
centrifugal fan are very thin. This will cause more vibrations and
make louder noise.
[0008] According to the above, the conventional fan module has the
following shortcomings:
[0009] 1. The volume is larger.
[0010] 2. The blades tend to deflect to cause unstable
operation.
SUMMARY OF THE INVENTION
[0011] It is therefore a primary object of the present invention to
provide a band-type fan structure, which has a greatly minified
volume.
[0012] It is a further object of the present invention to provide
the above band-type fan structure, which overcomes the shortcoming
of unstable operation of the conventional fan caused by deflection
of the blades.
[0013] To achieve the above and other objects, the band-type fan
structure of the present invention includes a transmission band
body and multiple blades. The transmission band body has a
lengthwise direction and a widthwise direction. The blades are side
by side disposed on the transmission band body in parallel to each
other and arranged in the lengthwise direction of the transmission
band body. Each blade has a main body disposed on a surface of the
transmission band body and a first end extending from the main body
in the widthwise direction of the transmission band body. Each two
adjacent blades define therebetween a flow way. The transmission
band body is movable in the lengthwise direction, whereby the
blades are driven by the transmission band body to transversely
move.
[0014] In the above band-type fan structure, the main bodies of the
blades are disposed on the surface of the transmission band body
with the first ends of the blades extending in the widthwise
direction of the transmission band body. When the power member
drives the transmission band body to move in the lengthwise
direction, the blades are driven by the transmission band body to
transversely move. Due to the wing-shaped configuration of the
blades and the specific aerodynamic property of the wing-shaped
configuration, the airflow around the first ends of the blades are
changed to create an air volume through the flow ways. Accordingly,
the band-type fan structure can be used instead of the conventional
fan to minimize the volume of the fan. Also, the band-type fan
structure overcomes the shortcoming of unstable operation of the
conventional fan caused by deflection of the blades.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] 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:
[0016] FIG. 1 is a perspective assembled view of a conventional fan
structure;
[0017] FIG. 2A is a perspective exploded view of a first embodiment
of the band-type fan structure of the present invention;
[0018] FIG. 2B is a perspective assembled view of the first
embodiment of the band-type fan structure of the present
invention;
[0019] FIG. 3A is a perspective exploded view of the first
embodiment of the band-type fan structure of the present
invention;
[0020] FIG. 3B is a perspective assembled view of the first
embodiment of the band-type fan structure of the present
invention;
[0021] FIG. 4A is a perspective exploded view of a second
embodiment of the band-type fan structure of the present
invention;
[0022] FIG. 4B is a perspective assembled view of the second
embodiment of the band-type fan structure of the present
invention;
[0023] FIG. 5 is a perspective view of a third embodiment of the
band-type fan structure of the present invention; and
[0024] FIG. 6 is a perspective assembled view of a fourth
embodiment of the band-type fan structure of the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0025] Please refer to FIGS. 2A and 2B. FIG. 2A is a perspective
exploded view of a first embodiment of the band-type fan structure
of the present invention. FIG. 2B is a perspective assembled view
of the first embodiment of the band-type fan structure of the
present invention. According to the first embodiment, the band-type
fan structure of the present invention includes a transmission band
body 20 and multiple blades 21. The transmission band body 20 has a
lengthwise direction 201 and a widthwise direction 202. The blades
21 are side by side disposed on the transmission band body 20 in
parallel to each other and arranged in the lengthwise direction 201
of the transmission band body 20. Each two adjacent blades 21
define therebetween a flow way 215. The transmission band body 20
is movable in the lengthwise direction 201, whereby the blades 21
are driven by the transmission band body 20 to transversely
move.
[0026] Please refer to FIGS. 3A and 3B. FIG. 3A is a perspective
exploded view of the first embodiment of the band-type fan
structure of the present invention. FIG. 3B is a perspective
assembled view of the first embodiment of the band-type fan
structure of the present invention. The band-type fan structure of
the present invention includes a transmission band body 20 and
multiple blades 21. The transmission band body 20 has a lengthwise
direction 201 and a widthwise direction 202. The blades 21 are side
by side disposed on the transmission band body 20 in parallel to
each other and arranged in the lengthwise direction 201 of the
transmission band body 20. Each blade 21 has a main body 211
disposed on a surface 203 of the transmission band body 20 and a
first end 213 extending from the main body 211 in the widthwise
direction 202 of the transmission band body 20. Each two adjacent
blades 21 define therebetween a flow way 215.
[0027] The blade 21 is wing-shaped. The wing-shaped blade 21 has
such an aerodynamic property that the direction of force can be
changed due to its shape. For example, a horizontal push force can
be converted into lift force or a horizontal rotational torque can
be converted into a vertical push force.
[0028] Further referring to FIGS. 3A and 3B as well as FIG. 2B, the
band-type fan structure further includes a case 22 having at least
one bottom board 221 and two sidewalls 222 disposed on two opposite
sides of the bottom board 221. The bottom board 221 and the
sidewalls 222 together define a receiving space 223 for receiving
the transmission band body 20 and the blades 21. The receiving
space 223 communicates with the flow ways 214 between the blades
21.
[0029] Please now refer to FIGS. 4A and 4B as well as FIG. 3A. FIG.
4A is a perspective exploded view of a second embodiment of the
band-type fan structure of the present invention. FIG. 4B is a
perspective assembled view of the second embodiment of the
band-type fan structure of the present invention. The second
embodiment is partially identical to the first embodiment in
component and relationship between the components and thus will not
be repeatedly described hereinafter. The second embodiment is
mainly different from the first embodiment in that the surface 203
of the transmission band body 20 has multiple connected sections
204 arranged in the lengthwise direction 201. One face of the main
body 211 of the blade 21, which face is proximal to the
transmission band body 20, has a connection section 212 connected
to the connected section 204. The connected section 204 is an
insertion hole or a threaded hole. The connection section 212 is an
insertion pin or a screw. The connection section 212 is connected
to the connected section 204 by means of insertion or screwing.
[0030] The lengthwise direction 201 and the widthwise direction 202
of the transmission band body 20 together define a passageway 205
in communication with the connected sections 204. The band-type fan
structure further includes a power member 3 connected to the
transmission band body 20, whereby the blades 21 can be driven by
the transmission band body 20 to transversely move. The power
member 3 has multiple transmission shafts 31 and a power source 32.
The transmission shafts 31 are positioned on two sides of the
passageway 205 and connected with the power source 32.
[0031] According to the above arrangement, the main bodies 211 of
the blades 21 are disposed on the surface 203 of the transmission
band body 20 with the first ends 213 of the blades 21 extending in
the widthwise direction 202 of the transmission band body 20. When
the power member 3 drives the transmission band body 20 to move in
the lengthwise direction 201, the blades 21 are driven by the
transmission band body 20 to transversely move. Due to the
wing-shaped configuration of the blades 21 and the specific
aerodynamic property of the wing-shaped configuration, the airflow
around the first ends 213 of the blades 21 are changed to create an
air volume through the flow ways 215. Accordingly, the band-type
fan structure can be used instead of the conventional fan to
minimize the volume of the fan. Also, the band-type fan structure
overcomes the shortcoming of unstable operation of the conventional
fan caused by deflection of the blades.
[0032] Please now refer to FIGS. 5 and 3A. FIG. 5 is a perspective
view of a third embodiment of the band-type fan structure of the
present invention. The third embodiment is partially identical to
the first embodiment in component and relationship between the
components and thus will not be repeatedly described hereinafter.
The third embodiment is mainly different from the first embodiment
in that the blade 21 further has a second end 213 extending from
the main body 211 in the widthwise direction 202 of the
transmission band body 20 opposite to the first end 213. One of the
first and second ends 213, 214 of the blade 21 or both of the first
and second ends 213, 214 of the blade 21 are made of flexible
material.
[0033] According to the above arrangement, when the power member 3
is turned on, the transmission band body 20 is driven by the power
member 3 to move in the lengthwise direction 201. At this time, the
blades 21 are driven by the transmission band body 20 to
transversely move. Due to the wing-shaped configuration of the
blades 21 and the specific aerodynamic property of the wing-shaped
configuration, the airflow around the first and second ends 213,
214 of the blades 21 are changed to create a greater air volume
through the flow ways 215. Accordingly, the band-type fan structure
can be used instead of the conventional fan to greatly minify the
volume of the fan. Also, the swing fan structure overcomes the
shortcoming of unstable operation of the conventional fan caused by
deflection of the blades.
[0034] Please now refer to FIG. 6, which is a perspective assembled
view of a fourth embodiment of the band-type fan structure of the
present invention. The fourth embodiment is partially identical to
the first embodiment in component and relationship between the
components and thus will not be repeatedly described hereinafter.
The fourth embodiment is mainly different from the first embodiment
in that the band-type fan structure includes multiple transmission
band bodies 20 and multiple blades 21 disposed on the transmission
band bodies 20. The transmission band bodies 20 are serially
connected with each other to form a large-size band-type fan
structure. This can achieve the same effect as the above
embodiments.
[0035] In conclusion, in comparison with the conventional fan
structure, the present invention has the following advantages:
[0036] 1. The volume of the fan structure is greatly reduced.
[0037] 2. The shortcoming of unstable operation of the conventional
fan structure caused by deflection of the blades is overcome.
[0038] The present invention has been described with the above
embodiments thereof and it is understood that many changes and
modifications in 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.
* * * * *