U.S. patent application number 16/992042 was filed with the patent office on 2021-12-16 for fan impeller.
The applicant listed for this patent is INVENTEC CORPORATION, Inventec (Pudong) Technology Corporation. Invention is credited to Chia-Chen CHEN, Tzu-Ling LIN, Tang-An LIU, Chi-Zen PENG.
Application Number | 20210388845 16/992042 |
Document ID | / |
Family ID | 1000005049544 |
Filed Date | 2021-12-16 |
United States Patent
Application |
20210388845 |
Kind Code |
A1 |
LIU; Tang-An ; et
al. |
December 16, 2021 |
FAN IMPELLER
Abstract
A fan impeller includes a wheel casing, a plurality of fan
blades and a plurality of first wind-guiding structures. The wheel
casing is configured to rotate about an axis. The fan blades
surround the axis and are arranged in a radial form. Each of the
fan blades includes an end edge and two extending edges. The end
edge is away from the wheel casing. The extending edges connect
between the end edge and the wheel casing. The end edge and the
extending edges define a windward surface and a leeward surface
opposite to each other. The first wind-guiding structures are
respectively disposed on the leeward surface of the corresponding
fan blade. Each of the first wind-guiding structures is at least
partially adjacent with the end edge and one of the extending edges
of the corresponding fan blade.
Inventors: |
LIU; Tang-An; (TAIPEI CITY,
TW) ; PENG; Chi-Zen; (TAIPEI CITY, TW) ; CHEN;
Chia-Chen; (TAIPEI CITY, TW) ; LIN; Tzu-Ling;
(TAIPEI CITY, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Inventec (Pudong) Technology Corporation
INVENTEC CORPORATION |
Shanghai
TAIPEI CITY |
|
CN
TW |
|
|
Family ID: |
1000005049544 |
Appl. No.: |
16/992042 |
Filed: |
August 12, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04D 29/282
20130101 |
International
Class: |
F04D 29/28 20060101
F04D029/28 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 10, 2020 |
CN |
202010524277.X |
Claims
1. A fan impeller, comprising: a wheel casing configured to rotate
about an axis; a plurality of fan blades surrounding the axis and
arranged in a radial form, each of the fan blades includes an end
edge and two extending edges, the end edge being away from the
wheel casing, the extending edges connecting between the end edge
and the wheel casing, the end edge and the extending edges defining
a windward surface and a leeward surface opposite to each other;
and a plurality of first wind-guiding structures respectively
disposed on the leeward surface of the corresponding fan blade, and
each of the first wind-guiding structures being at least partially
adjacent with the end edge and one of the extending edges of the
corresponding fan blade.
2. The fan impeller of claim 1, wherein the first wind-guiding
structures are away from the wheel casing.
3. The fan impeller of claim 1, wherein each of the first
wind-guiding structures has a first length, and the first length is
perpendicular to the corresponding leeward surface and gradually
diminishes in a direction towards the wheel casing.
4. The fan impeller of claim 1, wherein at least two of the fan
blades are located between adjacent two of the first wind-guiding
structures, the axis penetrates through a center of gravity of the
first wind-guiding structures.
5. The fan impeller of claim 1, further comprising: a plurality of
second wind-guiding structures respectively disposed on the leeward
surface of the corresponding fan blade, and each of the second
wind-guiding structures being at least partially adjacent with the
end edge and another one of the extending edges of the
corresponding fan blade.
6. The fan impeller of claim 5, wherein the second wind-guiding
structures are away from the wheel casing.
7. The fan impeller of claim 5, wherein each of second first
wind-guiding structures has a second length, and the second length
is perpendicular to the corresponding leeward surface and gradually
diminishes in a direction towards the wheel casing.
8. The fan impeller of claim 5, wherein at least two of the fan
blades are located between adjacent two of the second wind-guiding
structures, the axis penetrates through a center of gravity of the
second wind-guiding structures.
9. The fan impeller of claim 5, wherein the second wind-guiding
structures and the first wind-guiding structures are disposed on
the same fan blades.
10. The fan impeller of claim 5, wherein the second wind-guiding
structures and the first wind-guiding structures are disposed
differently on the fan blades.
Description
RELATED APPLICATIONS
[0001] This application claims priority to Chinese Application
Serial Number 202010524277.X filed Jun. 10, 2020, which is herein
incorporated by reference.
BACKGROUND
Technical Field
[0002] The present disclosure relates to fan impellers. More
particularly, the present disclosure relates to fan impellers
suitable to be applied in electronic products.
Description of Related Art
[0003] With the advancement of the technology today, the demand of
people for electronic products has also been increasing. In order
for the electronic products to provide greater satisfaction to
consumers, apart from constantly improving the functions and the
operational efficiency of the electronic products, optimization of
cooling systems is also an important issue that manufacturers would
highly concern.
[0004] For example, how to effectively increase the operational
efficiency of a cooling system under the best utilization of space
is undoubtedly an important issue of development for the
industry.
SUMMARY
[0005] A technical aspect of the present disclosure is to provide a
fan impeller, which can effectively reduce the turbulences produced
by the fan blades at the vicinity of the end edges. In this way,
the induced resistance and the noise produced when the fan impeller
rotates can be greatly reduced, such that the effect of heat
dissipation to the electronic product and thus the operational
performance of the electronic product can be enhanced.
[0006] According to an embodiment of the present disclosure, a fan
impeller includes a wheel casing, a plurality of fan blades and a
plurality of first wind-guiding structures. The wheel casing is
configured to rotate about an axis. The fan blades surround the
axis and are arranged in a radial form. Each of the fan blades
includes an end edge and two extending edges. The end edge is away
from the wheel casing. The extending edges connect between the end
edge and the wheel casing. The end edge and the extending edges
define a windward surface and a leeward surface opposite to each
other. The first wind-guiding structures are respectively disposed
on the leeward surface of the corresponding fan blade. Each of the
first wind-guiding structures is at least partially adjacent with
the end edge and one of the extending edges of the corresponding
fan blade.
[0007] In one or more embodiments of the present disclosure, the
first wind-guiding structures are away from the wheel casing.
[0008] In one or more embodiments of the present disclosure, each
of the first wind-guiding structures has a first length. The first
length is perpendicular to the corresponding leeward surface and
gradually diminishes in a direction towards the wheel casing.
[0009] In one or more embodiments of the present disclosure, at
least two of the fan blades are located between adjacent two of the
first wind-guiding structures. The axis penetrates through a center
of gravity of the first wind-guiding structures.
[0010] In one or more embodiments of the present disclosure, the
fan impeller further includes a plurality of second wind-guiding
structures. The second wind-guiding structures are respectively
disposed on the leeward surface of the corresponding fan blade.
Each of the second wind-guiding structures is at least partially
adjacent with the end edge and another one of the extending edges
of the corresponding fan blade.
[0011] In one or more embodiments of the present disclosure, the
second wind-guiding structures are away from the wheel casing.
[0012] In one or more embodiments of the present disclosure, each
of second first wind-guiding structures has a second length. The
second length is perpendicular to the corresponding leeward surface
and gradually diminishes in a direction towards the wheel
casing.
[0013] In one or more embodiments of the present disclosure, at
least two of the fan blades are located between adjacent two of the
second wind-guiding structures. The axis penetrates through a
center of gravity of the second wind-guiding structures.
[0014] In one or more embodiments of the present disclosure, the
second wind-guiding structures and the first wind-guiding
structures are disposed on the same fan blades.
[0015] In one or more embodiments of the present disclosure, the
second wind-guiding structures and the first wind-guiding
structures are disposed differently on the fan blades.
[0016] When compared with the prior art, the above-mentioned
embodiments of the present disclosure have at least the following
advantage: since the first wind-guiding structures are respectively
disposed on the leeward surface of the corresponding fan blade, and
each of the first wind-guiding structures is at least partially
adjacent with the end edge and one of the extending edges of the
corresponding fan blade, when the windward surfaces of the fan
blades move towards the rotating direction, the first wind-guiding
structures can effectively reduce the turbulences produced by the
fan blades at the vicinity of the end edges. In this way, the
induced resistance and the noise produced when the fan impeller
rotates can be greatly reduced, such that the effect of heat
dissipation to the electronic product and thus the operational
performance of the electronic product can be enhanced.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The disclosure can be more fully understood by reading the
following detailed description of the embodiments, with reference
made to the accompanying drawings as follows:
[0018] FIG. 1 is a schematic view of a fan impeller according to an
embodiment of the present disclosure;
[0019] FIG. 2 is a partially enlarged view of Area A of FIG. 1;
[0020] FIG. 3 is a schematic view of a fan impeller according to
another embodiment of the present disclosure;
[0021] FIG. 4 is a schematic view of a fan impeller according to a
further embodiment of the present disclosure;
[0022] FIG. 5 is a schematic view of a fan impeller according to
another embodiment of the present disclosure; and
[0023] FIG. 6 is a schematic view of a fan impeller according to a
further embodiment of the present disclosure.
DETAILED DESCRIPTION
[0024] Drawings will be used below to disclose embodiments of the
present disclosure. For the sake of clear illustration, many
practical details will be explained together in the description
below. However, it is appreciated that the practical details should
not be used to limit the claimed scope. In other words, in some
embodiments of the present disclosure, the practical details are
not essential. Moreover, for the sake of drawing simplification,
some customary structures and elements in the drawings will be
schematically shown in a simplified way. Wherever possible, the
same reference numbers are used in the drawings and the description
to refer to the same or like parts.
[0025] Unless otherwise defined, all terms (including technical and
scientific terms) used herein have the same meanings as commonly
understood by one of ordinary skill in the art to which this
disclosure belongs. It will be further understood that terms, such
as those defined in commonly used dictionaries, should be
interpreted as having a meaning that is consistent with their
meaning in the context of the relevant art and the present
disclosure, and will not be interpreted in an idealized or overly
formal sense unless expressly so defined herein.
[0026] Reference is made to FIGS. 1-2. FIG. 1 is a schematic view
of a fan impeller 100 according to an embodiment of the present
disclosure. FIG. 2 is a partially enlarged view of Area A of FIG.
1. In this embodiment, as shown in FIGS. 1-2, a fan impeller 100
includes a wheel casing 110, a plurality of fan blades 120 and a
plurality of first wind-guiding structures 130. The wheel casing
110 is configured to rotate about an axis X. The fan blades 120
surround the axis X and are arranged in a radial form. Each of the
fan blades 120 includes an end edge 121 and two extending edges
122. The end edge 121 is away from the wheel casing 110. The
extending edges 122 connect between the end edge 121 and the wheel
casing 110. The end edge 121 and the extending edges 122 define a
windward surface SW and a leeward surface SL opposite to each
other. The first wind-guiding structures 130 are respectively
disposed on the leeward surface SL of the corresponding fan blade
120, and are away from the wheel casing 110. It is worth to note
that, each of the first wind-guiding structures 130 is at least
partially adjacent with the end edge 121 and one of the extending
edges 122 of the corresponding fan blade 120. For example, as shown
in FIGS. 1-2, each of the first wind-guiding structures 130 is
adjacent with the extending edge 122 on the top of the
corresponding fan blade 120. In practical applications, the fan
impeller 100 is suitable to be applied in an electronic product
(not shown) in order to carry out heat dissipation to the
electronic product.
[0027] When the fan impeller 100 operates, the fan impeller 100 is
driven by a driving unit (not shown), such that the fan impeller
100 rotates towards the rotating direction D (please refer to FIG.
1 for the rotating direction D) about the axis X, which means the
windward surfaces SW of the fan blades 120 move towards the
rotating direction D. As mentioned above, since the first
wind-guiding structures 130 are respectively disposed on the
leeward surface SL of the corresponding fan blade 120, and each of
the first wind-guiding structures 130 is at least partially
adjacent with the end edge 121 and one of the extending edges 122
of the corresponding fan blade 120, when the windward surfaces SW
of the fan blades 120 move towards the rotating direction D, the
first wind-guiding structures 130 can effectively reduce the
turbulences produced by the fan blades 120 at the vicinity of the
end edges 121. In this way, the induced resistance and the noise
produced when the fan impeller 100 rotates can be greatly reduced,
such that the effect of heat dissipation to the electronic product
and thus the operational performance of the electronic product can
be enhanced.
[0028] In the structural point of view, as shown in FIG. 2, each of
the first wind-guiding structures 130 has a first length L1. The
first length L1 of each of the first wind-guiding structures 130 is
perpendicular to the corresponding leeward surface SL, and
gradually diminishes in a direction towards the wheel casing
110.
[0029] Reference is made to FIG. 3. FIG. 3 is a schematic view of a
fan impeller 100 according to another embodiment of the present
disclosure. In this embodiment, the fan impeller 100 further
includes a plurality of second wind-guiding structures 140. The
second wind-guiding structures 140 are respectively disposed on the
leeward surface SL of the corresponding fan blade 120 and are away
from the wheel casing 110. It is worth to note that, each of the
second wind-guiding structures 140 is at least partially adjacent
with the end edge 121 and another one of the extending edges 122 of
the corresponding fan blade 120. For example, as shown in FIG. 3,
each of the first wind-guiding structures 130 is adjacent with the
extending edge 122 on the top of the corresponding fan blade 120,
and each of the first wind-guiding structures 140 is adjacent with
the extending edge 122 on the bottom of the corresponding fan blade
120.
[0030] In the structural point of view, as shown in FIG. 3, each of
the second wind-guiding structures 140 has a second length L2. The
second length L2 of each of the second wind-guiding structures 140
is perpendicular to the corresponding leeward surface SL, and
gradually diminishes in a direction towards the wheel casing
110.
[0031] It is worth to note that, in this embodiment, the second
wind-guiding structures 140 and the first wind-guiding structures
130 are disposed on the same fan blades 120. To be specific, as
shown in FIG. 3, the second wind-guiding structures 140 and the
first wind-guiding structures 130 are respectively disposed on the
leeward surfaces SL of all of the fan blades 120. However, this
does not intend to limit the present disclosure.
[0032] Reference is made to FIG. 4. FIG. 4 is a schematic view of a
fan impeller 100 according to a further embodiment of the present
disclosure. In this embodiment, at least two of the fan blades 120
are located between adjacent two of the first wind-guiding
structures 130. In other words, the first wind-guiding structures
130 are not disposed on the leeward surfaces SL of all of the fan
blades 120. To be specific, in practical applications, the first
wind-guiding structures 130 can be disposed on the leeward surfaces
SL of the fan blades 120 by intervals. For example, a singular one
of the first wind-guiding structures 130 can be disposed for every
two or more pieces of the fan blades 120. However, this does not
intend to limit the present disclosure. For example, as shown in
FIG. 4, a singular one of the first wind-guiding structures 130 is
disposed for every two of the fan blades 120. It is worth to note
that, the axis X (please refer to FIG. 1 for the axis X) penetrates
through a center of gravity of the first wind-guiding structures
130. Thus, when the fan impeller 100 rotates towards the rotating
direction D about the axis X, the axis X still penetrates through
the overall center of gravity of the fan impeller 100, such that
the stability of the fan impeller 100 during rotation can be
maintained.
[0033] Reference is made to FIG. 5. FIG. 5 is a schematic view of a
fan impeller 100 according to another embodiment of the present
disclosure. In this embodiment, as shown in FIG. 5, apart from the
arrangement that at least two of the fan blades 120 are located
between adjacent two of the first wind-guiding structures 130, at
least two of the fan blades 120 are also located between adjacent
two of the second wind-guiding structures 140. Moreover, the second
wind-guiding structures 140 and the first wind-guiding structures
130 are disposed on the same fan blades 120. In other words,
similarly, the second wind-guiding structures 140 are not disposed
on the leeward surfaces SL of all of the fan blades 120. It is
worth to note that, the axis X (please refer to FIG. 1 for the axis
X) penetrates through a center of gravity of the second
wind-guiding structures 140. Thus, when the fan impeller 100
rotates towards the rotating direction D about the axis X, the axis
X still penetrates through the overall center of gravity of the fan
impeller 100, such that the stability of the fan impeller 100
during rotation can be maintained.
[0034] Reference is made to FIG. 6. FIG. 6 is a schematic view of a
fan impeller 100 according to another embodiment of the present
disclosure. In this embodiment, as shown in FIG. 6, at least two of
the fan blades 120 are located between adjacent two of the first
wind-guiding structures 130, while at least two of the fan blades
120 are also located between adjacent two of the second
wind-guiding structures 140. However, the second wind-guiding
structures 140 and the first wind-guiding structures 130 are
disposed differently on the fan blades 120.
[0035] In conclusion, when compared with the prior art, the
aforementioned embodiments of the present disclosure have at least
the following advantage: since the first wind-guiding structures
are respectively disposed on the leeward surface of the
corresponding fan blade, and each of the first wind-guiding
structures is at least partially adjacent with the end edge and one
of the extending edges of the corresponding fan blade, when the
windward surfaces of the fan blades move towards the rotating
direction, the first wind-guiding structures can effectively reduce
the turbulences produced by the fan blades at the vicinity of the
end edges. In this way, the induced resistance and the noise
produced when the fan impeller rotates can be greatly reduced, such
that the effect of heat dissipation to the electronic product and
thus the operational performance of the electronic product can be
enhanced.
[0036] Although the present disclosure has been described in
considerable detail with reference to certain embodiments thereof,
other embodiments are possible. Therefore, the spirit and scope of
the appended claims should not be limited to the description of the
embodiments contained herein.
[0037] It will be apparent to the person having ordinary skill in
the art that various modifications and variations can be made to
the structure of the present disclosure without departing from the
scope or spirit of the present disclosure. In view of the
foregoing, it is intended that the present disclosure cover
modifications and variations of the present disclosure provided
they fall within the scope of the following claims.
* * * * *