U.S. patent application number 12/876147 was filed with the patent office on 2011-03-31 for heat exchange system.
This patent application is currently assigned to ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.. Invention is credited to Xiongcheng WANG.
Application Number | 20110072844 12/876147 |
Document ID | / |
Family ID | 42527358 |
Filed Date | 2011-03-31 |
United States Patent
Application |
20110072844 |
Kind Code |
A1 |
WANG; Xiongcheng |
March 31, 2011 |
HEAT EXCHANGE SYSTEM
Abstract
A heat exchange system of the invention includes at least
multiple grids, a blower including an external rotor motor and a
wind blade, a compressor, and a box having multiple exhaust inlets.
The exhaust inlets are disposed on the side of the box. The grid is
disposed at an exhaust outlet of the box. The blower is disposed in
the box and below the grid. The compressor is disposed on bottom
surface in the box. The blower is an external rotor axial fan, and
the wind blade is disposed outside a rotor of the external rotor
motor. The heat exchange system of the invention features simple
structure, low cost, large air output, and good blowing effect, and
is highly efficient and power-saving.
Inventors: |
WANG; Xiongcheng;
(Zhongshan, CN) |
Assignee: |
ZHONGSHAN BROAD-OCEAN MOTOR CO.,
LTD.
Zhongshan
CN
|
Family ID: |
42527358 |
Appl. No.: |
12/876147 |
Filed: |
September 5, 2010 |
Current U.S.
Class: |
62/427 |
Current CPC
Class: |
F24F 1/38 20130101; F24F
1/50 20130101 |
Class at
Publication: |
62/427 |
International
Class: |
F25D 17/06 20060101
F25D017/06 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 30, 2009 |
CN |
200920236976.3 |
Claims
1. A heat exchange system, comprising multiple grids; a blower
comprising an external rotor motor and a wind blade; a compressor;
and a box having multiple exhaust inlets; wherein said exhaust
inlets are disposed on the side of said box; said grid is disposed
at an exhaust outlet of said box; said blower is disposed in said
box and below said grid; said compressor is disposed on bottom
surface in said box; said blower is an external rotor axial fan;
and said wind blade is disposed outside a rotor of said external
rotor motor.
2. The heat exchange system of claim 1, wherein said wind blade is
disposed outside said rotor of said external rotor motor via a
support; said support comprises an annular cylinder, and multiple
mounting feet extending from said annular cylinder; said wind blade
is disposed on said mounting foot; and said annular cylinder is fit
on said rotor of said external rotor motor.
3. The heat exchange system of claim 2, wherein said wind blade is
an equal-width blade and in the vicinity of said exhaust outlet of
said box.
4. The heat exchange system of claim 2, wherein said annular
cylinder is an integral formed cylinder, or a cylinder formed via
an annular body with an opening.
5. The heat exchange system of claim 2, wherein inner wall of said
annular cylinder is interference fit with outer wall of said
rotor.
6. The heat exchange system of claim 2, wherein a screw hole is
disposed on said mounting foot; and said wind blade is disposed on
said mounting foot via a bolt and a nut.
7. The heat exchange system of claim 2, wherein a through hole is
disposed on said mounting foot; and said wind blade is connected to
said mounting foot via a rivet.
8. The heat exchange system of claim 2, wherein said wind blade is
directly welded on said mounting foot, or directly welded on the
outside of said rotor of said external rotor motor.
9. The heat exchange system of claim 2, wherein said wind blade is
disposed on said mounting foot via buckling.
10. The heat exchange system of claim 2, wherein said annular
cylinder and said mounting foot are integrally formed, or connected
to each other as two independent parts via welding, buckling, or
riveting.
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. 200920236976.3 filed on Sep. 30, 2009, the contents
of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The invention relates to a heat exchange system.
[0004] 2. Description of the Related Art
[0005] FIG. 1 is a schematic view of a heat exchange system in the
related art. In this heat exchange system of an outdoor fan unit
for an air conditioner, multiple grids 1 are disposed at an exhaust
outlet 6 of a box 4, a blower 2 is disposed in the box 4 and below
the grid 1, and the blower 2 comprises a drive motor 7, and a wind
blade 9 or a wind wheel disposed on a motor shaft 8 of the drive
motor 7. Problems with the system are: 1) rotational inertia of the
drive motor 7 of the blower 2 is small, the wind blade 9 of the
blow 2 is far away from the exhaust outlet 6, and thus having a
high wind pressure coefficient, large wind resistance, and low
efficiency, which causes the blower 2 to blow small amount of wind
from the exhaust outlet 6 of the box 4, and thus an ideal blowing
effect cannot be facilitated; 2) the drive motor 7 of the blower 2
has large fluctuation in rotating torsion, namely large resonance,
which causes the wind blade 9 or the wind wheel to rotate unstably,
and affects blowing effects; 3) the heat exchange system employing
the blower structure is low efficient and power consuming, and
cannot meet requirement of the current society for energy
conservation and environmental protection.
SUMMARY OF THE INVENTION
[0006] In view of the above-described problem, it is one objective
of the invention to provide a heat exchange system that features
simple structure, low cost, large air output, and good blowing
effect, and is high efficient and power saving.
[0007] To achieve the above objectives, in accordance with one
embodiment of the invention, provided is a heat exchange system,
comprising multiple grids, a blower comprising an external rotor
motor and a wind blade, a compressor, and a box having multiple
exhaust inlets. The exhaust inlets are disposed on the side of the
box, the grid is disposed at the exhaust outlet of the box, the
blower is disposed in the box and below the grid, the compressor is
disposed on bottom surface in the box, the blower is an external
rotor axial fan, and the wind blade is disposed outside a rotor of
the external rotor motor.
[0008] In a class of this embodiment, the wind blade is disposed
outside the rotor of the external rotor motor via a support, the
support comprises an annular cylinder, and multiple mounting feet
extending from the annular cylinder, the wind blade is disposed on
the mounting foot, and the annular cylinder is fit on the rotor of
the external rotor motor.
[0009] In a class of this embodiment, the wind blade is an
equal-width blade and in the vicinity of the exhaust outlet of the
box.
[0010] In a class of this embodiment, the annular cylinder is an
integral formed cylinder, or a cylinder formed via an annular body
with an opening.
[0011] In a class of this embodiment, inner wall of the annular
cylinder is interference fit with outer wall of the rotor.
[0012] In a class of this embodiment, a screw hole is disposed on
the mounting foot, and the wind blade is disposed on the mounting
foot via a bolt and a nut.
[0013] In a class of this embodiment, a through hole is disposed on
the mounting foot, and the wind blade is connected to the mounting
foot via a rivet.
[0014] In a class of this embodiment, the wind blade is directly
welded on the mounting foot, or directly welded on the outside of
the rotor of the external rotor motor.
[0015] In a class of this embodiment, the wind blade is disposed on
the mounting foot via buckling.
[0016] In a class of this embodiment, the annular cylinder and the
mounting foot are integrally formed, or connected to each other as
two independent parts via welding, buckling, or riveting.
[0017] Advantages of the invention comprise:
[0018] 1) the blower uses the external rotor axial fan, the rotor
thereof features large rotational inertia, small fluctuation in
torsion, and stable operation, and the wind blade is close to the
exhaust outlet and has a low wind pressure coefficient, small wind
resistance, and high efficiency, which causes the external rotor
axial fan to blow large amount of wind from the exhaust outlet of
the box and thus improving blowing effect; 2) the heat exchange
system features high overall efficiency and low power consumption,
and meets requirement of the current society for energy
conservation and environmental protection; 3) the wind blade is an
equal-width blade with a large area and in the vicinity of the
exhaust outlet of the box, and thus greatly improving inducing
capacity of the external rotor axial fan, and blowing effect of the
heat exchange system; 4) the annular cylinder on the support is fit
on a housing of the rotor of the external rotor motor, and the
inner wall of the annular cylinder is interference fit with the
outer wall of the rotor, which make the invention have simple
assembling, reliable connection, high production efficiency, low
processing difficulty, and reduced production cost; 5) the external
rotor axial fan is combined and features simple installation and
disassembly, and the external rotor motor and the wind blade can be
transported separated, which reduces transportation cost; 6) by
using the external rotor axial fan, overall volume of the heat
exchange system and system cost are reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 is a schematic view of a heat exchange system in the
related art;
[0020] FIG. 2 is a schematic view of a heat exchange system of an
exemplary embodiment of the invention;
[0021] FIG. 3 is a schematic view of an external rotor axial fan in
FIG. 2;
[0022] FIG. 4 is another schematic view of the external rotor axial
fan in FIG. 3;
[0023] FIG. 5 is a cross-sectional view of FIG. 4 along a line A-A;
and
[0024] FIG. 6 is an enlarged view of FIG. 5 along a line B-B.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Further description of the invention will be given below in
conjunction with specific embodiments and accompanying
drawings.
[0026] As shown in FIGS. 2, 3 and 4, a heat exchange system of the
invention comprises multiple grids 1, a blower 2, a compressor 3,
and a box 4 having multiple exhaust inlets 5 on the side thereof.
The grid 1 is disposed at an exhaust outlet 6 of the box 4, the
blower 2 is disposed in the box 4 and below the grid 1, the
compressor 3 is disposed on bottom surface in the box 4. The blower
2 is an external rotor axial fan, and comprises an external rotor
motor 7 and a wind blade 8, and the wind blade 8 is disposed
outside a rotor 71 of the external rotor motor 7.
[0027] The wind blade 8 is disposed outside the rotor 71 of the
external rotor motor 7 via a support 9, the support 9 comprises an
annular cylinder 91, and multiple mounting feet 92 extending from
the annular cylinder 91, the wind blade 8 is disposed on the
mounting foot 92, and the annular cylinder 91 is fit on the rotor
71 of the external rotor motor 7. The wind blade 8 is an
equal-width blade and in the vicinity of the exhaust outlet 6 of
the box 4. The annular cylinder 91 is a cylinder formed via an
annular body with an opening, and specifically is a closed cylinder
formed by the annular body with the opening via a fastening device
10. As shown in FIGS. 5 and 6, the external rotor motor comprises a
rotor 71 and a stator 72, and inner wall of the annular cylinder 91
is interference fit with outer wall of the rotor 71. A through hole
is disposed on the mounting foot 92, and the wind blade 8 is
connected to the mounting foot 92 via a rivet 11. The annular
cylinder 91 and the mounting foot 92 are integrally formed, or
connected to each other as two independent parts via welding,
buckling, or riveting.
[0028] In addition, the annular cylinder 91 is an integral formed
cylinder, or a closed cylinder made via welding. Alternatively, a
screw hole is disposed on the wind blade 8, and the wind blade 8 is
disposed on the mounting foot 92 via a bolt and a nut.
Alternatively, the wind blade 8 is directly welded on the mounting
foot 92, or directly welded on the outside of the rotor 71 of the
external rotor motor 7. Alternatively, the wind blade 8 is disposed
on the mounting foot 92 via buckling.
[0029] The blower 2 of the invention uses the external rotor axial
fan that features large rotational inertia, small fluctuation in
torsion, and stable operation, and the wind blade 8 is close to the
exhaust outlet 6 and has a low wind pressure coefficient, small
wind resistance, and high efficiency, which causes the external
rotor axial fan to blow large amount of wind from the exhaust
outlet 6 of the box 4 and thus improving blowing effect; the heat
exchange system features high overall efficiency and low power
consumption, and meets requirement of the current society for
energy conservation and environmental protection; the wind blade 8
is an equal-width blade with a large area and in the vicinity of
the exhaust outlet 6 of the box 4, and thus greatly improving
inducing capacity of the external rotor axial fan, and blowing
effect of the heat exchange system.
[0030] 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.
* * * * *