U.S. patent application number 13/844970 was filed with the patent office on 2014-06-05 for fan system.
This patent application is currently assigned to ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.. The applicant listed for this patent is ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.. Invention is credited to Xiao LIU, Songfa TANG.
Application Number | 20140154109 13/844970 |
Document ID | / |
Family ID | 48512325 |
Filed Date | 2014-06-05 |
United States Patent
Application |
20140154109 |
Kind Code |
A1 |
TANG; Songfa ; et
al. |
June 5, 2014 |
FAN SYSTEM
Abstract
A fan system in combination with a DC brushless motor. The DC
brushless motor includes: a shaft, a base, a stator assembly, a
rotor assembly, a control box including a second cavity, and a
circuit board. The fan system includes: a blower housing, a wind
wheel, a first mounting bracket, and a second mounting bracket. The
first mounting bracket is arranged at a first air inlet. The outer
side of the first mounting bracket is connected to the upper end
surface. The inner side of the first mounting bracket is provided
with a first bearing, and the other end of the shaft is disposed on
the first bearing. The second mounting bracket is arranged at a
second air inlet. The outer side of the second mounting bracket is
connected to the lower end surface.
Inventors: |
TANG; Songfa; (Zhongshan,
CN) ; LIU; Xiao; (Zhongshan, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BROAD-OCEAN MOTOR CO., LTD.; ZHONGSHAN |
|
|
US |
|
|
Assignee: |
ZHONGSHAN BROAD-OCEAN MOTOR CO.,
LTD.
Zhongshan
CN
|
Family ID: |
48512325 |
Appl. No.: |
13/844970 |
Filed: |
March 16, 2013 |
Current U.S.
Class: |
417/354 |
Current CPC
Class: |
F04D 17/162 20130101;
F04D 25/0613 20130101; F04D 29/056 20130101; H02K 7/14 20130101;
H02K 5/15 20130101; F04D 25/068 20130101; H02K 5/00 20130101; F04D
25/0606 20130101 |
Class at
Publication: |
417/354 |
International
Class: |
F04D 25/06 20060101
F04D025/06 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 30, 2012 |
CN |
201220650812.7 |
Claims
1. A fan system in combination with a DC brushless motor (2), the
DC brushless motor (2) comprising: a shaft (21), a base (22), a
stator assembly (23), a rotor assembly (24), a control box (25)
comprising a second cavity, and a circuit board (26); the fan
system comprising: a) a blower housing (1), the blower housing (1)
comprising: a first cavity (11), an upper end surface (12), a lower
end surface (13), and an air outlet (16); b) a wind wheel (3), the
wind wheel (3) comprising a connecting plate (31); c) a first
mounting bracket (4), the first mounting bracket (4) comprising: an
outer side, an inner side; and d) a second mounting bracket (5),
the second mounting bracket (5) comprising: an outer side, and an
inner side; wherein the first cavity (11) is arranged inside the
blower housing (1); a first air inlet (14) is disposed on the upper
end surface (12) of the blower housing (1); a second air inlet (15)
is disposed on the lower end surface (13) of the blower housing
(1); the first air inlet (14) and the second air inlet (15) are
communicated with the cavity (11); the air outlet (16) is
communicated with the cavity (11); the circuit board (26) is
arranged in the second cavity of the control box (25); the stator
assembly (23) is disposed on the base (22); the rotor assembly (24)
is disposed on a middle part of the shaft (21); the stator assembly
(23) is arranged inside the rotor assembly (24); the base (22) is
provided with a second bearing (7); one end of the shaft (21) is
disposed on the second bearing (7); the connecting plate (31) in
disposed on a middle part of the wind wheel (3) outside the rotor
assembly (24); the first mounting bracket (4) is arranged at the
first air inlet (14); the outer side of the first mounting bracket
(4) is connected to the upper end surface (12); the inner side of
the first mounting bracket (4) is provided with a first bearing
(6); the other end of the shaft (21) is disposed on the first
bearing (6); and the second mounting bracket (5) is arranged at the
second air inlet (15); the outer side of the second mounting
bracket (5) is connected to the lower end surface (13); the inner
side of the second mounting bracket (5) is connected to the control
box (25).
2. The fan system of claim 1, wherein the base (22) and the control
box (25) are arranged together and positioned in the first cavity
(11); and the inner side of the second mounting bracket (5) is
connected to the control box (25).
3. The fan system of claim 1, wherein the control box (25) is
arranged outside the blower housing (1); the circuit board (26) is
arranged inside the control box (25) and is in electric connection
with the stator assembly (23) in the first cavity (11) through a
wire; and the inner side of the second mounting bracket (5) is
connected to a bottom of the base (22).
4. The fan system of claim 1, wherein a flange plate (241) is fixed
outside the rotor assembly (24); a center hole is disposed on the
connecting plate (31) in the middle of the wind wheel (3); the
rotor assembly (24) is disposed in the center hole; and the flange
plate (241) is connected to the connecting plate (31) via a
screw.
5. The fan system of claim 2, wherein a flange plate (241) is fixed
outside the rotor assembly (24); a center hole is disposed on the
connecting plate (31) in the middle of the wind wheel (3); the
rotor assembly (24) is disposed in the center hole; and the flange
plate (241) is connected to the connecting plate (31) via a
screw.
6. The fan system of claim 3, wherein a flange plate (241) is fixed
outside the rotor assembly (24); a center hole is disposed on the
connecting plate (31) in the middle of the wind wheel (3); the
rotor assembly (24) is disposed in the center hole; and the flange
plate (241) is connected to the connecting plate (31) via a
screw.
7. The fan system of claim 4, wherein the first mounting bracket
(4) comprises a plurality of first mounting legs (41); the first
mounting legs (41) are distributed around the first air inlet (14);
one end of each of the first mounting legs (41) are connected to
the upper end surface (12); the other end of each of the first
mounting legs (41) are connected to each other to form a third
cavity (42); and the first bearing (6) is arranged inside the third
cavity (42).
8. The fan system of claim 5, wherein the first mounting bracket
(4) comprises a plurality of first mounting legs (41); the first
mounting legs (41) are distributed around the first air inlet (14);
one end of each of the first mounting legs (41) are connected to
the upper end surface (12); the other end of each of the first
mounting legs (41) are connected to each other to form a third
cavity (42); and the first bearing (6) is arranged inside the third
cavity (42).
9. The fan system of claim 6, wherein the first mounting bracket
(4) comprises a plurality of first mounting legs (41); the first
mounting legs (41) are distributed around the first air inlet (14);
one end of each of the first mounting legs (41) are connected to
the upper end surface (12); the other end of each of the first
mounting legs (41) are connected to each other to form a third
cavity (42); and the first bearing (6) is arranged inside the third
cavity (42).
10. The fan system of claim 4, wherein the second mounting bracket
(5) comprises a plurality of second mounting legs (51); the second
mounting legs (51) are distributed around the second air inlet
(15); one end of each of the second mounting legs (51) is connected
to the lower end surface (13); the other end of each of the second
mounting legs (51) are connected to an erection loop (52); and the
erection loop (52) is attached to the control box (25) and is fixed
on the control box (25) by a screw.
11. The fan system of claim 5, wherein the second mounting bracket
(5) comprises a plurality of second mounting legs (51); the second
mounting legs (51) are distributed around the second air inlet
(15); one end of each of the second mounting legs (51) is connected
to the lower end surface (13); the other end of each of the second
mounting legs (51) are connected to an erection loop (52); and the
erection loop (52) is attached to the control box (25) and is fixed
on the control box (25) by a screw.
12. The fan system of claim 6, wherein the second mounting bracket
(5) comprises a plurality of second mounting legs (51); the second
mounting legs (51) are distributed around the second air inlet
(15); one end of each of the second mounting legs (51) is connected
to the lower end surface (13); the other end of each of the second
mounting legs (51) are connected to an erection loop (52); and the
erection loop (52) is attached to the control box (25) and is fixed
on the control box (25) by a screw.
13. The fan system of claim 7, wherein an end part of the first
mounting leg (41) is provided with a strip groove (43); and a screw
passes through the strip groove (43) and fixes the first mounting
leg (41) on the blower housing (1).
14. The fan system of claim 8, wherein an end part of the first
mounting leg (41) is provided with a strip groove (43); and a screw
passes through the strip groove (43) and fixes the first mounting
leg (41) on the blower housing (1).
15. The fan system of claim 9, wherein an end part of the first
mounting leg (41) is provided with a strip groove (43); and a screw
passes through the strip groove (43) and fixes the first mounting
leg (41) on the blower housing (1).
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] Pursuant to 35 U.S.C. .sctn.119 and the Paris Convention
Treaty, this application claims the benefit of Chinese Patent
Application No. 201220650812.7 filed Nov. 30, 2012, the contents of
which are incorporated herein by reference. Inquiries from the
public to applicants or assignees concerning this document or the
related applications should be directed to: Matthias Scholl P. C.,
Attn.: Dr. Matthias Scholl Esq., 14781 Memorial Drive, Suite 1319,
Houston, Tex. 77079.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The invention relates to a fan system in combination with a
DC brushless motor.
[0004] 2. Description of the Related Art
[0005] Two typical methods are employed to assemble a motor and a
wind wheel of a fan system. A first method is a single arm
installation method, that is, a bracket is arranged on one side to
install the motor and the wind wheel. However, for a high power
blower and a heavy wind wheel, a supporting system has a violent
vibration and a poor stability. A second method is a double arm
support installation method. Although it operates steadily, the
system is complicated in structure. The fan system is supported by
two ends. A hollow shaft is arranged on the rotor assembly and a
wire passes through a center of the hollow shaft. The method has
defects of much complicated manufacturing procedure and higher
cost.
SUMMARY OF THE INVENTION
[0006] In view of the above-described problems, it is one objective
of the invention to provide a fan system in combination with a DC
brushless motor that has advantages of steady operation, powerful
driving force, simple structure, simple manufacturing technology
and low manufacturing cost.
[0007] To achieve the above objective, in accordance with one
embodiment of the invention, there is provided a fan system in
combination with a DC brushless motor. The DC brushless motor
comprises: a shaft, a base, a stator assembly, a rotor assembly, a
control box comprising a second cavity, and a circuit board. The
fan system comprises: a blower housing, the blower housing
comprising: a first cavity, an upper end surface, a lower end
surface, and an air outlet; a wind wheel, the wind wheel comprising
a connecting plate; a first mounting bracket, the first mounting
bracket comprising: an outer side, an inner side; and a second
mounting bracket, the second mounting bracket comprising: an outer
side, and an inner side.
[0008] The first cavity is arranged inside the blower housing. A
first air inlet is disposed on the upper end surface of the blower
housing. A second air inlet is disposed on the lower end surface of
the blower housing. The first air inlet and the second air inlet
are communicated with the cavity. The air outlet is communicated
with the cavity.
[0009] The circuit board is arranged in the second cavity of the
control box. The stator assembly is disposed on the base. The rotor
assembly is disposed on a middle part of the shaft. The stator
assembly is arranged inside the rotor assembly. The base is
provided with a second bearing. One end of the shaft is disposed on
the second bearing.
[0010] The connecting plate in disposed on a middle part of the
wind wheel outside the rotor assembly.
[0011] The first mounting bracket is arranged at the first air
inlet. The outer side of the first mounting bracket is connected to
the upper end surface. The inner side of the first mounting bracket
is provided with a first bearing. The other end of the shaft is
disposed on the first bearing.
[0012] The second mounting bracket is arranged at the second air
inlet. The outer side of the second mounting bracket is connected
to the lower end surface. The inner side of the second mounting
bracket is connected to the control box.
[0013] In a class of this embodiment, the base and the control box
are arranged together and positioned in the first cavity. The inner
side of the second mounting bracket is connected to the control
box.
[0014] In a class of this embodiment, the control box is arranged
outside the blower housing. The circuit board is arranged inside
the control box and is in electric connection with the stator
assembly in the first cavity through a wire. The inner side of the
second mounting bracket is connected to a bottom of the base. The
erection loop is attached to the bottom of the base and is fixed on
the bottom of the base via a screw.
[0015] In a class of this embodiment, a flange plate is fixed
outside the rotor assembly. A center hole is disposed on the
connecting plate in the middle of the wind wheel. The rotor
assembly is disposed in the center hole. The flange plate is
connected to the connecting plate via a screw.
[0016] In a class of this embodiment, the first mounting bracket
comprises a plurality of first mounting legs. The first mounting
legs are distributed around the first air inlet. One end of each of
the first mounting legs are connected to the upper end surface; and
the other end of each of the first mounting legs are connected to
each other to form a third cavity. The first bearing is arranged
inside the third cavity.
[0017] In a class of this embodiment, the second mounting bracket
comprises a plurality of second mounting legs. The second mounting
legs are distributed around the second air inlet. One end of each
of the second mounting legs is connected to the lower end surface;
and the other end of each of the second mounting legs is connected
to an erection loop. The erection loop is attached to the control
box and is fixed on the control box by a screw.
[0018] In a class of this embodiment, an end part of the first
mounting leg is provided with a strip groove, a screw passes
through the strip groove and fixes the first mounting leg on the
blower housing.
[0019] Advantages of the invention are summarized as follows:
[0020] 1) The first mounting bracket is arranged at the first air
inlet. The outer side of the first mounting bracket is connected to
the upper end surface. The inner side of the first mounting bracket
is provided with a first bearing. The other end of the shaft is
disposed on the first bearing. The second mounting bracket is
arranged at the second air inlet. The outer side of the second
mounting bracket is connected to the lower end surface. The inner
side of the second mounting bracket is connected to the control
box. The invention is advantageous in a smooth and steady
operation, powerful driving force, shorter shaft, simple structure,
and simplified manufacturing procedure. Furthermore, the hollow
shaft is not necessitated; external wires are employed to enter
into the control box or the base through the second air inlet,
thereby simplifying the wiring. [0021] 2) A flange plate is fixed
outside the rotor assembly. A center hole is disposed on the
connecting plate in the middle of the wind wheel. The rotor
assembly is disposed in the center hole. The flange plate is
connected to the connecting plate via a screw. Thus, the invention
has a simple structure and easy installation. [0022] 3) The second
mounting bracket comprises a plurality of second mounting legs. The
second mounting legs are distributed around the second air inlet.
One end of each of the second mounting legs is connected to the
lower end surface; and the other end of each of the second mounting
legs is connected to an erection loop. The erection loop is
attached to the control box and is fixed on the control box by a
screw. Thus, the invention has a simple structure, is easy to
install and convenient to locating the position. [0023] 4) The
first mounting bracket comprises a plurality of first mounting
legs. The first mounting legs are distributed around the first air
inlet. One end of each of the first mounting legs are connected to
the upper end surface; and the other end of each of the first
mounting legs are connected to each other to form a third cavity.
The first bearing is arranged inside the third cavity. Thus, the
invention is easy to install and convenient to adjust the
position.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The invention is described hereinbelow with reference to the
accompanying drawings, in which:
[0025] FIG. 1 is a stereogram of a fan system from one angle in
accordance with one embodiment of the invention;
[0026] FIG. 2 is a stereogram of a fan system from another angle in
accordance with one embodiment of the invention;
[0027] FIG. 3 is an exploded view of a fan system from one angle in
accordance with one embodiment of the invention;
[0028] FIG. 4 is an exploded view of a fan system from another
angle in accordance with one embodiment of the invention;
[0029] FIG. 5 is an assembly stereogram of a wind wheel, a motor,
and a first mounting bracket from one angle in accordance with one
embodiment of the invention;
[0030] FIG. 6 is an exploded view drawing of the invention after
the assembly of the wind wheel, the motor and the first from
mounting bracket from another angle;
[0031] FIG. 7 is a front view of a fan system in accordance with
one embodiment of the invention;
[0032] FIG. 8 is a cross sectional view taken from line A-A of FIG.
7; and
[0033] FIG. 9 is an enlarged view of Part B-B of FIG. 8.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0034] For further illustrating the invention, experiments
detailing a fan system in combination with a DC brushless motor are
described below. It should be noted that the following examples are
intended to describe and not to limit the invention.
Example 1
[0035] As shown in FIGS. 1-9, a fan system in combination with a DC
brushless motor. The fan system comprises: a blower housing 1, a
wind wheel 3, a first mounting bracket 4, and a second mounting
bracket 5. The blower housing 1 is provided with a cavity 11
inside. A first air inlet 14 is arranged on an upper end surface 12
of the blower housing 1. A second air inlet 15 is arranged on a
lower end surface 13 of the blower housing 1. The first air inlet
14 and the second air inlet 15 are communicated with the cavity 11.
An air outlet 16 is arranged on the blower housing 1 and
communicated with the cavity 11. The DC brushless motor 2
comprises: a shaft 21, a base 22, a stator assembly 23, a rotor
assembly 24, a control box 25, and a circuit board 26. The circuit
board 26 is arranged in a cavity of the control box 25. The stator
assembly 23 is arranged on the base 22. The rotor assembly 24 is
arranged on a middle part of the shaft 21. The stator assembly 23
is arranged inside the rotor assembly 24. One end of the shaft 21
is arranged on a second bearing 7 of the base 22. A connecting
plate 31 in arranged in a middle of the wind wheel 3 outside the
rotor assembly 24.
[0036] The first mounting bracket 4 is arranged at the first air
inlet 14. An outer side of the first mounting bracket 4 is
connected to the upper end surface 12. An inner side of the first
mounting bracket 4 is provided with a first bearing 6. The other
end of the shaft 21 is arranged on the first bearing 6. The second
mounting bracket 5 is arranged at the second air inlet 15. An outer
side of the second mounting bracket 5 is connected to the lower end
surface 13. An inner side of the second mounting bracket 5 is
connected to the control box 25.
[0037] The base 22 and the control box 25 are arranged together and
positioned in the first cavity 11. The inner side of the second
mounting bracket 5 is connected to the control box 25.
[0038] A flange plate 241 is fixed outside the rotor assembly 24. A
center hole is disposed on the connecting plate 31 in the middle of
the wind wheel 3. The rotor assembly 24 is disposed in the center
hole. The flange plate 241 is connected to the connecting plate 31
via a screw.
[0039] The first mounting bracket 4 comprises a plurality of first
mounting legs 41. The first mounting legs 41 are distributed around
the first air inlet 14. One end of each of the first mounting legs
41 are connected to the upper end surface 12; and the other end of
each of the first mounting legs 41 are connected to each other to
form a third cavity 42. The first bearing 6 is arranged inside the
third cavity 42.
[0040] The second mounting bracket 5 comprises a plurality of
second mounting legs 51. The second mounting legs 51 are
distributed around the second air inlet 15. One end of each of the
second mounting legs 51 is connected to the lower end surface 13;
and the other end of each of the second mounting legs 51 are
connected to an erection loop 52. The erection loop 52 is attached
to the control box 25 and is fixed on the control box 25 by a
screw.
[0041] An end part of the first mounting leg 41 is provided with a
strip groove 43. A screw passes through the strip groove 43 and
fixes the first mounting leg 41 on the blower housing 1.
Example 2
[0042] Based on the example 1, the following technical schemes are
added: the control box 25 is arranged outside the blower housing 1.
The circuit board 26 is arranged inside the control box 25 and is
in electric connection with the stator assembly 23 in the first
cavity 11 through a wire. The inner side of the second mounting
bracket 5 is connected to a bottom of the base 22. The erection
loop 52 is attached to the bottom of the base 22 and is fixed on
the bottom of the base via a screw.
[0043] The fan system in combination with a DC brushless motor
operates in a double-arm support mode. Thus, the fan system is
advantageous in a steady operation, powerful driving force, simple
structure, simple manufacturing technology, and low manufacturing
cost.
[0044] While particular embodiments of the invention have been
shown and described, it will be obvious to those skilled in the art
that changes and modifications may be made without departing from
the invention in its broader aspects, and therefore, the aim in the
appended claims is to cover all such changes and modifications as
fall within the true spirit and scope of the invention.
* * * * *