U.S. patent application number 15/461449 was filed with the patent office on 2018-09-20 for fan impeller structure.
The applicant listed for this patent is ASIA VITAL COMPONENTS (CHINA) CO., LTD.. Invention is credited to Meng Shen, Xiang-You Zeng.
Application Number | 20180266441 15/461449 |
Document ID | / |
Family ID | 63519085 |
Filed Date | 2018-09-20 |
United States Patent
Application |
20180266441 |
Kind Code |
A1 |
Shen; Meng ; et al. |
September 20, 2018 |
FAN IMPELLER STRUCTURE
Abstract
A fan impeller structure includes a main body having a central
annular section, a connection section and a flow guide section. The
central annular section has a through hole. The connection section
has multiple connection members. Two ends of the connection members
are respectively connected with the central annular section and the
flow guide section. The flow guide section has a carrier annular
body. Multiple fan blades are disposed on at least one side of the
carrier annular body. The fan impeller structure is able to enhance
the strength of the fan blades and lower the noise of the fan.
Inventors: |
Shen; Meng; (Shenzhen,
CN) ; Zeng; Xiang-You; (Shenzhen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ASIA VITAL COMPONENTS (CHINA) CO., LTD. |
Shenzhen |
|
CN |
|
|
Family ID: |
63519085 |
Appl. No.: |
15/461449 |
Filed: |
March 16, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04D 29/281 20130101;
F04D 25/0613 20130101 |
International
Class: |
F04D 29/66 20060101
F04D029/66; F04D 17/16 20060101 F04D017/16; F04D 29/28 20060101
F04D029/28 |
Claims
1. A fan impeller structure comprising a main body having a central
annular section, a connection section and a flow guide section, the
central annular section having a through hole, the connection
section having multiple connection members, two ends of the
connection members being respectively connected with the central
annular section and the flow guide section, the flow guide section
having a carrier annular body, multiple fan blades being disposed
on at least one side of the carrier annular body.
2. The fan impeller structure as claimed in claim 1, wherein the
connection members are U-shaped.
3. The fan impeller structure as claimed in claim 1, wherein the
fan blades are arranged at equal intervals or unequal
intervals.
4. The fan impeller structure as claimed in claim 1, wherein a
junction between the flow guide section and the connection section
further has an annular rib.
5. The fan impeller structure as claimed in claim 1, wherein at
least one air inlet is defined between the connection members.
6. The fan impeller structure as claimed in claim 1, further
comprising a hub connected with the main body, the material of the
hub being identical to or different from the material of the main
body, the hub being integrally connected with the central annular
section by means of injection molding.
7. The fan impeller structure as claimed in claim 1, wherein the
central annular section and one side of the flow guide section are
radially horizontally arranged corresponding to each other.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates generally to a fan impeller
structure, and more particularly to a fan impeller structure, which
is able to lower the noise of the fan and enhance the strength of
the fan blades.
2. Description of the Related Art
[0002] The conventional fans can be classified into two major
types, that is, centrifugal fans and axial-flow fans. The two types
of fans respectively have different forced airflow guiding effects
and are applied to different sites. With respect to the axial-flow
fan, the airflow goes from upper side of the fan into the fan and
is guided by the fan impeller to flow out from the lower side of
the fan. With respect to the centrifugal fan, the fan case or wind
scooper can be such designed as to guide the airflow into the fan
from one side and out of the fan from the other side or into the
fan from the upper side of the fan and out of the fan from one
side. A designer can design the centrifugal fan in accordance with
the requirement. As aforesaid, the centrifugal fan can be such
designed that the airflow goes into the fan from the upper side of
the fan and out of the fan from one side or goes into the fan from
one side and out of the fan from the other side.
[0003] Therefore, the centrifugal fan is applicable to a narrower
space.
[0004] The fan blades of the conventional centrifugal fan are
mainly made by means of injection molding (such as plastic integral
injection molding or metal fan blade enclosure injection molding).
One end of the fan blade is a free end, while the other end of the
fan blade is connected with the fan hub. In operation, in order to
prevent the fan blades from over-swinging, the centrifugal fan has
a ring body connected with the free ends of the fan blades.
[0005] In operation, the conventional centrifugal fan has the
following shortcomings:
[0006] 1. The conventional centrifugal fan will slightly
vibrate.
[0007] 2. The fan impeller of the conventional centrifugal fan will
severely axially skip.
[0008] 3. The fan blades of the conventional centrifugal fan will
cut the windward side to make loud noise.
SUMMARY OF THE INVENTION
[0009] It is therefore a primary object of the present invention to
provide a fan impeller structure, which is able to reduce the
vibration and improve the problem of axial skip of the fan
blades.
[0010] To achieve the above and other objects, the fan impeller
structure of the present invention includes a main body having a
central annular section, a connection section and a flow guide
section. The central annular section has a through hole. The
connection section has multiple connection members. Two ends of the
connection members are respectively connected with the central
annular section and the flow guide section. The flow guide section
has a carrier annular body. Multiple fan blades are disposed on at
least one side of the carrier annular body.
[0011] The fan impeller structure is able to improve the
shortcomings of the conventional centrifugal fan that in operation,
the conventional centrifugal fan will slightly vibrate and the fan
impeller of the conventional centrifugal fan will axially skip.
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 view of a first embodiment of the
fan impeller structure of the present invention;
[0014] FIG. 2 is a perspective view of a second embodiment of the
fan impeller structure of the present invention; and
[0015] FIG. 3 is a perspective view of a third embodiment of the
fan impeller structure of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0016] Please refer to FIG. 1, which is a perspective view of a
first embodiment of the fan impeller structure of the present
invention. According to the first embodiment, the fan impeller
structure of the present invention includes a main body 1 having a
central annular section 11, a connection section 12 and a flow
guide section 13. The central annular section 11 has a through hole
111. The connection section 12 has multiple connection members 121.
Two ends of the connection members 121 are respectively connected
with the central annular section 11 and the flow guide section 13.
The flow guide section 13 has a carrier annular body 131. Multiple
fan blades 132 are disposed on at least one side of the carrier
annular body 131. At least one air inlet 121a is defined between
the connection members 121.
[0017] The fan blades 132 are arranged at equal intervals or
unequal intervals. In this embodiment, the fan blades 132 are, but
not limited to, arranged at equal intervals for illustration
purposes.
[0018] The connection members 121 are reverse U-shaped. Two ends of
the connection members 121 are connected with the central annular
section 11 and the flow guide section 13. Therefore, the central
annular section 11 and the flow guide section 13 are radially
horizontally arranged corresponding to each other.
[0019] Please now refer to FIG. 2, which is a perspective view of a
second embodiment of the fan impeller structure of the present
invention. The second embodiment is partially identical to the
first embodiment in structure and thus will not be redundantly
described hereinafter. The second embodiment is different from the
first embodiment in that the junction between the flow guide
section 13 and the connection section 12 further has an annular rib
122. The annular rib 122 is disposed on the other plane face of the
flow guide section 13, which plane face is free from the fan blades
132. The annular rib 122 can be normal to the flow guide section 13
or inclined from the flow guide section 13. The annular rib 122
serves to enhance the flow guide effect and further increase the
flow guide efficiency.
[0020] Please now refer to FIG. 3, which is a perspective view of a
third embodiment of the fan impeller structure of the present
invention. The third embodiment is partially identical to the first
embodiment in structure and thus will not be redundantly described
hereinafter. The third embodiment is different from the first
embodiment in that the fan impeller structure further has a hub 2
connected with the central annular section 11. The material of the
hub 2 can be identical to or different from the material of the
central annular section 11. The hub 2 is integrally connected with
the central annular section 11 by means of injection molding or
enclosure injection molding.
[0021] According to the above arrangement, the fan blades 132 are
disposed on at least one side of the carrier annular body 131 of
the flow guide section 13. The carrier annular body 131 serves to
enhance the structural strength of the fan blades 132 and minify
the cut of the fan blades 132 to the windward side. Accordingly, in
working, the fan blades 132 will not vibrate to make noise.
[0022] The present invention is further advantageous in that the
present invention is able to improve the shortcoming of the
conventional fan impeller structure that the structure is too
complicated and the fan impeller can be hardly demolded after the
injection molding. Moreover, the fan impeller structure of the
present invention has multiple reinforcement structures to help in
enhancing the strength of the entire fan impeller structure and
reduce the axial skip of the fan blades 132.
[0023] 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.
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