U.S. patent application number 16/663932 was filed with the patent office on 2020-04-30 for fan device.
The applicant listed for this patent is Yen Sun Technology Corp.. Invention is credited to Chien-Jung CHEN, Chih-Tsung HSU, Chin-Hui PAN, Hsin-Hsien WU.
Application Number | 20200132080 16/663932 |
Document ID | / |
Family ID | 65351967 |
Filed Date | 2020-04-30 |
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United States Patent
Application |
20200132080 |
Kind Code |
A1 |
CHEN; Chien-Jung ; et
al. |
April 30, 2020 |
FAN DEVICE
Abstract
A fan device includes a casing unit and a fan impeller unit
mounted in the casing unit. The casing unit includes a casing body
formed with a receiving space and an air outlet port, a porous
plate formed with a plurality of through holes and is disposed in
the receiving space to divide the receiving space into an
air-flowing room and a noise-reduction room, and an air-entering
tube in spatial communication with the air-flowing room. The fan
impeller unit is disposed in the air-flowing room and rotatable to
generate airflow partially flowing from the air-flowing room into
the noise-reduction room through the through holes.
Inventors: |
CHEN; Chien-Jung; (Kaohsiung
City, TW) ; WU; Hsin-Hsien; (Kaohsiung City, TW)
; HSU; Chih-Tsung; (Kaohsiung City, TW) ; PAN;
Chin-Hui; (Kaohsiung City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Yen Sun Technology Corp. |
Kaohsiung City |
|
TW |
|
|
Family ID: |
65351967 |
Appl. No.: |
16/663932 |
Filed: |
October 25, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04D 17/167 20130101;
F04D 29/441 20130101; F04D 29/661 20130101; F04D 29/4226 20130101;
F04D 29/665 20130101 |
International
Class: |
F04D 17/16 20060101
F04D017/16; F04D 29/44 20060101 F04D029/44; F04D 29/66 20060101
F04D029/66 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 26, 2018 |
TW |
107137959 |
Claims
1. A fan device comprising: a casing unit having an axis and
including a casing body that is formed with a receiving space and
an air outlet port in spatial communication with said receiving
space, a porous plate that is formed with a plurality of through
holes and that is disposed in said receiving space to divide said
receiving space into an air-flowing room and a noise-reduction room
aligned with and spaced apart from each other along the axis, and
an air-entering tube that is connected to said casing body and that
is in spatial communication with said air-flowing room; and a fan
impeller unit mounted in the casing unit, disposed in said
air-flowing room of said receiving space, and being rotatable about
the axis to generate airflow that partially flows from said
air-flowing room into said noise-reduction room through said
through holes of said porous plate.
2. The fan device of claim 1, wherein said casing body of said
casing unit includes abase and a cover connected to said base to
cooperatively define said receiving space, said base cooperating
with said porous plate to define said noise-reduction room, said
cover cooperating with said porous plate to define said air-flowing
room, said porous plate being further formed with an inner
tube-communicating through hole spaced apart from said through
holes, said air-entering tube peripherally and outwardly extending
from and in spatial communication with said inner
tube-communicating through hole.
3. The fan device of claim 2, further comprising a sound-absorption
member disposed in said noise-reduction room.
4. The fan device of claim 3, wherein said sound-absorption member
is porous.
5. The fan device of claim 3, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
6. The fan device of claim 2, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
7. The fan device of claim 1, wherein said casing body of said
casing unit includes abase and a cover connected to said base to
cooperatively define said receiving space, said base cooperating
with said porous plate to define said noise-reduction room, said
cover cooperating with said porous plate to define said air-flowing
room, said base including a bottom plate that is distal to said
cover and that is formed with an outer tube-communicating through
hole, said air-entering tube peripherally and outwardly extending
from and in spatial communication with said outer
tube-communicating through hole.
8. The fan device of claim 7, further comprising a sound-absorption
member disposed in said noise-reduction room.
9. The fan device of claim 8, wherein said sound-absorption member
is porous.
10. The fan device of claim 8, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
11. The fan device of claim 7, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
12. The fan device of claim 1, wherein said casing body of said
casing unit is further formed with an outer tube-communicating
through hole in spatial communication with said receiving space,
said outer tube-communicating through hole and said porous plate
being located at two opposite sides of said fan impeller unit along
the axis, said air-entering tube peripherally and outwardly
extending from and in spatial communication with said outer
tube-communicating through hole.
13. The fan device of claim 12, further comprising a
sound-absorption member disposed in said noise-reduction room.
14. The fan device of claim 13, wherein said sound-absorption
member is porous.
15. The fan device of claim 13, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
16. The fan device of claim 12, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
17. The fan device of claim 1, further comprising a
sound-absorption member disposed in said noise-reduction room.
18. The fan device of claim 17, wherein said sound-absorption
member is porous.
19. The fan device of claim 17, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
20. The fan device of claim 1, wherein said casing unit further
includes an air guiding member disposed at said air outlet port of
said casing body and in spatial communication with said receiving
space of said casing body.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority of Taiwanese Invention
Patent Application No. 107137959, filed on Oct. 26, 2018.
FIELD
[0002] The disclosure relates to a fan device, and more
particularly to a fan device having a casing body and a porous
plate to define a noise-reduction room.
BACKGROUND
[0003] When a general fan is in operation, fan blades of the fan
are prone to irregular vibration due to air turbulence at end
portions of the fan blades, and an undesired noise is generated
accordingly. For reducing the undesired noise, different auxiliary
noise-reduction devices have been developed to be used with the
fan.
[0004] Referring to FIG. 1, a conventional noise-reduction fan
assembly includes a fan 10 and a noise-reduction device 1 mounted
to the fan 10. The noise-reduction device 1 includes a casing 11
connected to the fan 10, a plurality of drivenable fan blades 12, a
surrounding plate 13, and a sound-absorbing member 14. The casing
11 defines an inner space 110. The drivenable fan blades 12 are
made of a sound-absorbing material and disposed in the inner space
110. The surrounding plate 13 is disposed in the inner space 110
and divides the inner space 110 into a central room 132 for
receiving the drivenable fan blades 12 and a sound-absorbing room.
130 surrounding the central room 132. The sound-absorbing member 14
is filled in the sound-absorbing room 130. The surrounding plate 13
has a plurality of through holes 131 to spatially communicate the
central room 132 with the sound-absorbing room 130. Airflow
generated by the fan 10 will drive rotation of the drivenable fan
blades 12 and then the airflow will be guided into the central room
132. The airflow is also guided from the central room 132 into the
sound-absorbing room 130 through the through holes 131 of the
surrounding plate 13. The noise generated by the fan 10 can be
partially absorbed by the drivenable fan blades 12 and partially
absorbed by the noise-absorbing member 14 filled in the
sound-absorbing room 130.
[0005] However, the aforementioned conventional noise-reduction fan
assembly requires installation of the drivenable fan blades 12, and
the drivenable fan blades 12 are required to be adjusted based on a
few parameters of the fan 10, such as rotational performance and an
integral structural configuration. Hence, the design and
manufacturing of the conventional noise-reduction device 1 is
relatively complicated.
[0006] Referring to FIG. 2, another conventional noise-reduction
fan assembly includes a fan 20 and a noise-reduction device 2
connected to the fan 20. The noise-reduction device 2 includes a
resonator 21 and a status indication unit 220. The fan 20 is
exemplified to be a heat-dissipating fan for dissipating heat of an
electronic apparatus, such as a central processing unit 22. The
status indication unit 220 is connected between the resonator 21
and the central processing unit 22, and is capable of indicating an
operational status of the central processing unit 22. The resonator
21 includes a casing 211 that defines an inner chamber 210 in
spatial communication with the fan 20, a clapboard 212, an elastic
component 213, and two thermoelectric components 214 capable of
detecting noise through noise-responsive deformation.
[0007] The clapboard 212 is disposed in the inner chamber 210, and
divides the inner chamber 210 into a space 201 in spatial
communication with the fan 20 and a resonance room 200. The elastic
component 213 is received in the resonance room 200 and is
connected to the clapboard 212 and the casing 211 so that the
clapboard 212 is movable relative to the casing 211.
[0008] The two thermoelectric components 214 are disposed in the
resonance room 200 and located respectively on two symmetrical
sides of the clapboard 212. The thermoelectric component 214 is in
signal communication with the status indication unit 220 and is
deformable accordingly. Deformation of the thermoelectric
components 214 will move the clapboard 212 to adjust a resonance
volume of the resonance room 200 so as to eliminate the noise
generated by the fan 20.
[0009] The aforementioned conventional noise-reduction fan assembly
also has complicated structure and signal communication. Hence,
there is plenty of room for improvement in the structural design of
the conventional noise-reduction fan assembly.
SUMMARY
[0010] Therefore, an object of the disclosure is to provide a fan
device that can alleviate at least one of the drawbacks of the
prior art.
[0011] According to the disclosure, a fan device includes a casing
unit and a fan impeller unit mounted in the casing unit.
[0012] The casing unit has an axis and includes a casing body, a
porous plate, and an air-entering tube.
[0013] The casing body is formed with a receiving space and an air
outlet port in spatial communication with the receiving space. The
porous plate is formed with a plurality of through holes and is
disposed in the receiving space to divide the receiving space into
an air-flowing room and a noise-reduction room aligned with and
spaced apart from each other along the axis. The air-entering tube
is connected to the casing body and is in spatial communication
with the air-flowing room.
[0014] The fan impeller unit is disposed in the air-flowing room of
the receiving space and is rotatable about the axis to generate
airflow that partially flows from the air-flowing room into the
noise-reduction room through the through holes of the porous
plate.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Other features and advantages of the disclosure will become
apparent in the following detailed description of the embodiments
with reference to the accompanying drawings, of which:
[0016] FIG. 1 is a cross-sectional view illustrating a conventional
noise-reduction fan assembly;
[0017] FIG. 2 is a schematic view illustrating another conventional
noise-reduction fan assembly;
[0018] FIG. 3 is an exploded view illustrating a first embodiment
of a fan device according to the disclosure;
[0019] FIG. 4 is a perspective view illustrating the first
embodiment;
[0020] FIG. 5 is a cross-sectional view illustrating the first
embodiment;
[0021] FIG. 6 is a cross-sectional view illustrating a second
embodiment of a fan device according to the disclosure;
[0022] FIG. 7 is an exploded view illustrating a third embodiment
of a fan device according to the disclosure;
[0023] FIG. 8 is a cross-sectional view illustrating the third
embodiment; and
[0024] FIG. 9 is a cross-sectional view illustrating a fourth
embodiment of a fan device according to the disclosure.
DETAILED DESCRIPTION
[0025] Before the disclosure is described in greater detail, it
should be noted that where considered appropriate, reference
numerals or terminal portions of reference numerals have been
repeated among the figures to indicate corresponding or analogous
elements, which may optionally have similar characteristics.
[0026] Referring to FIGS. 3 to 5, a first embodiment of a fan
device includes a casing unit 3 and a fan impeller unit 4 that is
mounted in the casing unit 3.
[0027] The casing unit 3 has an axis (A) and includes a casing body
31, a porous plate 32, an air-entering tube 33, and an air guiding
member 34. The casing body 31 is formed with a receiving space 310
and an air outlet port 318 in spatial communication with the
receiving space 310. In this embodiment, the casing body 31 of the
casing unit 3 includes a base 312 and a cover 311 connected to the
base 312 to cooperatively define the receiving space 310.
[0028] The porous plate 32 is formed with a plurality of through
holes 329 and is disposed in the receiving space 310 to divide the
receiving space 310 into an air-flowing room 301 and a
noise-reduction room 302 aligned with and spaced apart from each
other along the axis (A). The base 312 cooperates with the porous
plate 32 to define the noise-reduction room 302. The cover 311
cooperates with the porous plate 32 to define the air-flowing room
301. The porous plate 32 is further formed with an inner
tube-communicating through hole 321 spaced apart from the through
holes 329.
[0029] The air-entering tube 33 is connected to the casing body 31
and is in spatial communication with the air-flowing room 301. The
air-entering tube 33 peripherally and outwardly extends from and is
in spatial communication with the inner tube-communicating through
hole 321.
[0030] The air guiding member 34 is disposed at the air outlet port
318 of the casing body 31 and is in spatial communication with the
receiving space 310 of the casing body 31. In one form, the air
guiding member 34 may peripherally protrude from the air outlet
port 318 of the casing body 31 and tapered along a direction away
from the casing body 31, such that an airflow flowing through the
air guiding member 34 can be collectively pressurized to have an
increased air pressure.
[0031] The fan impeller unit 4 is disposed in the air-flowing room
301 of the receiving space 310 and is rotatable about the axis (A)
to generate an airflow that partially flows from the air-flowing
room 301 into the noise-reduction room 302 through the through
holes 329 of the porous plate 32.
[0032] To be specific, when the fan impeller unit 4 is in
operation, ambient air is guided into the air-flowing room 301
through the air-entering tube 33 and the inner tube-communicating
through hole 321 of the porous plate 21. The airflow is generated
from the air flowing into the air-flowing room 301. A main stream
of the airflow mainly flows from the air-flowing room 301 toward
the air outlet port 318. A tributary of the airflow flows from the
air-flowing room 301 into the noise-reduction room 302 through the
through holes 329 of the porous plate 32.
[0033] In this embodiment, the configuration of the casing unit 3,
such as the shape and the internal volume of the noise-reduction
room 302 is designed in accordance with the noise frequency of the
fan impeller unit 4. In addition, the airflow flowing into the
noise-reduction room 302 through the through holes 329 of the
porous plate 32 is dispersed by the through holes 329 before
entering the noise-reduction room 302, so that wind shear produced
and concentrated at a certain position can be avoided to reduce the
noise.
[0034] Referring to FIG. 6, a second embodiment of the fan device
according to the disclosure is illustrated. The second embodiment
is structurally similar to the first embodiment. However, the fan
device of the second embodiment further includes a sound-absorption
member disposed in the noise-reduction room 302. Specifically, the
sound-absorption member 5 is porous. Hence, in this embodiment, the
noise is further absorbed by the sound-absorption member 5.
Furthermore, the volume and the shape of the noise-reduction room
302 can be adjusted by the filling manner of the sound-absorption
member 5 therein in compliance with the desired configuration of
the casing unit 3.
[0035] Referring to FIGS. 7 and 8, a third embodiment of the fan
device according to the disclosure is illustrated. The third
embodiment is structurally similar to that of the first embodiment.
However, instead of forming the inner tube-communicating through
hole 321, the base 312 includes a bottom plate 316 that is distal
to the cover 311 and that is formed with an outer
tube-communicating through hole 317. The air-entering tube 33
peripherally and outwardly extends from and is in spatial
communication with the outer tube-communicating through hole
317.
[0036] Referring to FIG. 9, a fourth embodiment of the fan device
according to the disclosure is illustrated. The fourth embodiment
is structurally similar to that of the first embodiment. However,
instead of forming the inner tube-communicating through hole 321,
the casing body 31 of the casing unit 3 is formed with an outer
tube-communicating through hole 317' in spatial communication with
the receiving space 310. The outer tube-communicating through hole
317' and the porous plate 32 are located at two opposite sides of
the fan impeller unit 4 along the axis (A), such that the
noise-reduction room 302 is distal to the air-entering tube 33. The
air-entering tube 33 peripherally and outwardly extends from and is
in spatial communication with the outer tube-communicating through
hole 317'.
[0037] To sum up, by virtue of the design of the casing body 31 and
the inclusion of the porous plate 32, the airflow generated by the
fan impeller unit 4 partially flows from the air-flowing room 301
into the noise-reduction room 302 through the porous plate 32, and
the airflow is simultaneously dispersed by the porous plate 32 to
reduce wind shear. Therefore, the noise generated by the fan
impeller unit 4 of the fan device according to the disclosure can
be reduced.
[0038] In the description above, for the purposes of explanation,
numerous specific details have been set forth in order to provide a
thorough understanding of the embodiments. It will be apparent,
however, to one skilled in the art, that one or more other
embodiments may be practiced without some of these specific
details. It should also be appreciated that reference throughout
this specification to "one embodiment," "an embodiment," an
embodiment with an indication of an ordinal number and so forth
means that a particular feature, structure, or characteristic may
be included in the practice of the disclosure. It should be further
appreciated that in the description, various features are sometimes
grouped together in a single embodiment, figure, or description
thereof for the purpose of streamlining the disclosure and aiding
in the understanding of various inventive aspects, and that one or
more features or specific details from one embodiment may be
practiced together with one or more features or specific details
from another embodiment, where appropriate, in the practice of the
disclosure.
[0039] While the disclosure has been described in connection with
what are considered the exemplary embodiments, it is understood
that this disclosure is not limited to the disclosed embodiments
but is intended to cover various arrangements included within the
spirit and scope of the broadest interpretation so as to encompass
all such modifications and equivalent arrangements.
* * * * *