U.S. patent application number 14/862853 was filed with the patent office on 2016-03-31 for inverter heat-dissipation device and inverter.
The applicant listed for this patent is Sungrow Power Supply Co., Ltd.. Invention is credited to Guohong LI, You LU, Nengfei WANG, Jie ZHOU.
Application Number | 20160091264 14/862853 |
Document ID | / |
Family ID | 52088155 |
Filed Date | 2016-03-31 |
United States Patent
Application |
20160091264 |
Kind Code |
A1 |
LU; You ; et al. |
March 31, 2016 |
INVERTER HEAT-DISSIPATION DEVICE AND INVERTER
Abstract
An inverter heat-dissipation device and an inverter are
provided. The inverter heat-dissipation device includes a
centrifugal fan, a first heat radiator, a second heat radiator and
an air channel. A first air outlet is arranged at one end of the
air channel and a second air outlet is arranged at the other end of
the air channel. The first heat radiator is arranged in the air
channel and is in communication with the first air outlet. The
second heat radiator is arranged in the air channel and is in
communication with the second air outlet. The centrifugal fan is
arranged in the air channel and is disposed between the first heat
radiator and the second heat radiator. An air inlet matching the
centrifugal fan in size is arranged on the air channel. A first
opening is arranged on the air channel; and a second opening is
arranged on the air channel.
Inventors: |
LU; You; (Hefei, CN)
; ZHOU; Jie; (Hefei, CN) ; WANG; Nengfei;
(Hefei, CN) ; LI; Guohong; (Hefei, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Sungrow Power Supply Co., Ltd. |
Hefei |
|
CN |
|
|
Family ID: |
52088155 |
Appl. No.: |
14/862853 |
Filed: |
September 23, 2015 |
Current U.S.
Class: |
165/121 |
Current CPC
Class: |
H02S 40/42 20141201;
F28F 13/06 20130101; H05K 7/20918 20130101 |
International
Class: |
F28F 13/06 20060101
F28F013/06 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 28, 2014 |
CN |
201410508020.X |
Claims
1. An inverter heat-dissipation device, comprising a centrifugal
fan, a first heat radiator, a second heat radiator and an air
channel, wherein a first air outlet is arranged at one end of the
air channel and a second air outlet is arranged at the other end of
the air channel; the first heat radiator is arranged in the air
channel and is in communication with the first air outlet; the
second heat radiator is arranged in the air channel and is in
communication with the second air outlet; the centrifugal fan is
arranged in the air channel and is positioned between the first
heat radiator and the second heat radiator; an air inlet matching
the centrifugal fan in size is arranged on the air channel; a first
opening is arranged on the air channel, wherein a first heating
element of an inverter comprising the inverter heat-dissipation
device is installed onto the first heat radiator; and a second
opening is arranged on the air channel, wherein a second heating
element of the inverter comprising the inverter heat-dissipation
device is installed onto the second heat radiator.
2. The inverter heat-dissipation device according to claim 1,
wherein the air channel comprises an air channel backboard and a
U-shaped groove, and the air channel backboard is installed onto
the U-shaped groove.
3. The inverter heat-dissipation device according to claim 2,
wherein the first heat radiator and the second heat radiator are
installed fixedly at different points on the air channel backboard;
and the centrifugal fan is installed fixedly on the U-shaped
groove.
4. The inverter heat-dissipation device according to claim 1,
further comprising: a third air outlet and a fourth air outlet,
wherein the third air outlet is arranged on a first lateral surface
of the air channel and matches the centrifugal fan in size; and the
fourth air outlet is arranged on a second lateral surface of the
air channel opposite to the first lateral surface and matches the
centrifugal fan in size.
5. The inverter heat-dissipation device according to claim 2,
further comprising: a third air outlet and a fourth air outlet,
wherein the third air outlet is arranged on a first lateral surface
of the air channel and matches the centrifugal fan in size; and the
fourth air outlet is arranged on a second lateral surface of the
air channel opposite to the first lateral surface and matches the
centrifugal fan in size.
6. The inverter heat-dissipation device according to claim 3,
further comprising: a third air outlet and a fourth air outlet,
wherein the third air outlet is arranged on a first lateral surface
of the air channel and matches the centrifugal fan in size; and the
fourth air outlet is arranged on a second lateral surface of the
air channel opposite to the first lateral surface and matches the
centrifugal fan in size.
7. An inverter, comprising a first heating element, a second
heating element and an inverter heat-dissipation device comprising
a centrifugal fan, a first heat radiator, a second heat radiator
and an air channel, wherein a first air outlet is arranged at one
end of the air channel and a second air outlet is arranged at the
other end of the air channel; the first heat radiator is arranged
in the air channel and is in communication with the first air
outlet; the second heat radiator is arranged in the air channel and
is in communication with the second air outlet; the centrifugal fan
is arranged in the air channel and is arranged between the first
heat radiator and the second heat radiator; an air inlet matching
the centrifugal fan in size is arranged on the air channel; a first
opening is arranged on the air channel, wherein a first heating
element of an inverter comprising the inverter heat-dissipation
device is installed onto the first heat radiator; and a second
opening is arranged on the air channel, wherein a second heating
element of the inverter comprising the inverter heat-dissipation
device is installed onto the second heat radiator, wherein the
first heating element is installed onto the first heat radiator of
the inverter heat-dissipation device; and the second heating
element is installed onto the second heat radiator of the inverter
heat-dissipation device.
8. The inverter according to claim 7, wherein the first heating
element is installed onto a first heat radiator substrate, wherein
the first heat radiator substrate is a heat radiator substrate of
the first heat radiator; and the second heating element is
installed onto a second heat radiator substrate, wherein the second
heat radiator substrate is a heat radiator substrate of the second
heat radiator.
9. The inverter according to claim 8, wherein a heat conduction
silicone is coated on a contact surface between the first heating
element and the first heat radiator substrate; and a heat
conduction silicone is coated on a contact surface between the
second heating element and the second heat radiator substrate.
10. The inverter according to claim 8, further comprising: a third
heating element and a fourth heating element, wherein the third
heating element is arranged above the third air outlet of the
inverter heat-dissipation device; and the fourth heating element is
arranged below the fourth air outlet of the inverter
heat-dissipation device.
11. The inverter according to claim 10, further comprising: a first
row of air vents facing the third heating element; and a second row
of air vents facing the fourth heating element.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to Chinese Patent
Application No. 201410508020.X, entitled "INVERTER HEAT-DISSIPATION
DEVICE AND INVERTER", filed on Sep. 28, 2014 with the State
Intellectual Property Office of the PRC, the disclosure of which
being incorporated herein by reference in its entirety.
FIELD
[0002] The present disclosure relates to the technical field of
inverter, and in particular to an inverter heat-dissipation device
and an inverter.
BACKGROUND
[0003] An air-cooled inverter generally dissipates heat via a
unidirectional straight-through air channel which has an air inlet
at one end and an air outlet at the other end as shown in FIG. 1.
An axial fan is typically located at the air inlet of the air
channel. Cold air is blown into the air channel by the axial fan,
and the air flows through a first heat radiator and a second heat
radiator for heat exchange. After the heat exchange, hot air flows
out through the air outlet of the air channel, thereby achieving
"the pulling-air cooling". Practically, the axial fan may be
located at the air outlet of the air channel, for achieving "the
drawing-air cooling".
[0004] Since at least two heat radiators are provided in the
unidirectional straight-through air channel, a length of the
unidirectional straight-through air channel (a distance from the
air inlet to the air outlet) is long, which results in a great
pressure loss along the unidirectional straight-through air channel
and a heavy load on the fan, thereby reducing the service life of
the fan.
[0005] The heat radiators in the unidirectional straight-through
air channel are typically located at an upstream position and a
downstream position in a flowing direction of an air flow. Air
flowing through the upstream heat radiator is cold air, and most of
air flowing through the downstream heat radiator is hot air
discharged from the upstream heat radiator. Thus, the downstream
heat radiator does not dissipate heat well. As the hot air
continuously flows through the downstream heat radiator, the
heat-dissipation effect of the downstream heat radiator becomes
increasingly worse, and the temperature of the downstream heat
radiator itself becomes increasingly higher, thereby resulting in a
great difference between temperatures of the downstream heat
radiator and the upstream heat radiator, and reducing the
performance of an inverter including the heat radiator.
SUMMARY OF DISCLOSURE
[0006] An inverter heat-dissipation device and an inverter are
provided according to embodiments of the present disclosure and are
directed toward extending a service life of a centrifugal fan,
improving the heat-dissipation effect of a heat radiator, and
improving the performance of an inverter including the heat
radiator.
[0007] An inverter heat-dissipation device is provided, which
includes a centrifugal fan, a first heat radiator, a second heat
radiator and an air channel, where [0008] a first air outlet is
arranged at one end of the air channel and a second air outlet is
arranged at the other end of the air channel; [0009] the first heat
radiator is arranged in the air channel and is in communication
with the first air outlet; [0010] the second heat radiator is
arranged in the air channel and is in communication with the second
air outlet; [0011] the centrifugal fan is arranged in the air
channel and is arranged between the first heat radiator and the
second heat radiator; [0012] an air inlet matching the centrifugal
fan in size is arranged on the air channel; [0013] a first opening
is arranged on the air channel, where a first heating element of an
inverter including the inverter heat-dissipation device is
installed onto the first heat radiator through the first opening;
and [0014] a second opening is arranged on the air channel, where a
second heating element of the inverter including the inverter
heat-dissipation device is installed onto the second heat radiator
through the second opening.
[0015] In an embodiment, the air channel may include an air channel
backboard and a U-shaped groove, and the air channel backboard may
be installed onto the U-shaped groove.
[0016] In an embodiment, the first heat radiator and the second
heat radiator may be installed fixedly at different points on the
air channel backboard; and the centrifugal fan may be installed
fixedly on the U-shaped groove.
[0017] In an embodiment, the inverter heat-dissipation device may
include: [0018] a third air outlet and a fourth air outlet, where
[0019] the third air outlet may be arranged on a first lateral
surface of the air channel and may match the centrifugal fan in
size; and [0020] the fourth air outlet may be arranged on a second
lateral surface of the air channel opposite to the first lateral
surface and may match the centrifugal fan in size.
[0021] Further, an inverter is provided, which includes a first
heating element, a second heating element and the inverter
heat-dissipation device described above, where [0022] the first
heating element is installed onto the first heat radiator of the
inverter heat-dissipation device via the first opening arranged on
the air channel of the inverter heat-dissipation device; and [0023]
the second heating element is installed onto the second heat
radiator of the inverter heat-dissipation device via the second
opening arranged on the air channel of the inverter
heat-dissipation device.
[0024] In an embodiment, the first heating element may be installed
onto a first heat radiator substrate via the first opening arranged
on the air channel of the inverter heat-dissipation device, where
the first heat radiator substrate may be a radiator substrate of
the first heat radiator; and [0025] the second heating element may
be installed onto a second heat radiator substrate via the second
opening arranged on the air channel of the inverter
heat-dissipation device, where the second heat radiator substrate
may be a radiator substrate of the second heat radiator.
[0026] In an embodiment, a heat conduction silicone may be coated
on a contact surface between the first heating element and the
first heat radiator substrate; and [0027] a heat conduction
silicone may be coated on a contact surface between the second
heating element and the second heat radiator substrate.
[0028] In an embodiment, the inverter may further include: [0029] a
third heating element and a fourth heating element, where [0030]
the third heating element may be arranged above the third air
outlet of the inverter heat-dissipation device; and [0031] the
fourth heating element may be arranged below the fourth air outlet
of the inverter heat-dissipation device.
[0032] In an embodiment, the inverter may further include: [0033] a
first row of air vents facing the third heating element; and [0034]
a second row of air vents facing the fourth heating element.
[0035] As compared with certain conventional technologies,
embodiments of the present disclosure offer potential benefits
hereinafter described.
[0036] In embodiment of the present disclosure, the centrifugal fan
is disposed between the two heat radiators, the first heat radiator
is in communication with the first air outlet, the second heat
radiator is in communication with the second air outlet, and air is
drawn in at the middle portion of the air channel and flows out
from two ends of the air channel. Hence, a length of the air
channel (i.e., a distance from the air inlet to the air outlet) is
shortened; and a width of the air channel is increased since the
air flows out through the two air outlets of the air channel
simultaneously, thereby reducing a pressure loss along the air
channel, reducing a load on the centrifugal fan, and tending
therefore to extend the service life of the centrifugal fan.
[0037] Since the air is drawn in at the middle portion of the air
channel and flows out from two ends of the air channel, the air
flowing through each of the two heat radiators in the air channel
is relatively cold air, and the heat-dissipation effect of the heat
radiator is enhanced as a result of not having hot air flowing
through the heat radiator. Problems of too high a temperature of
the heat radiator itself and thus increasingly worse
heat-dissipation effect due to the hot air continuously flowing
through the heat radiator in the air channel are also lessened, and
hence a difference between temperatures of the two heat radiators
in the air channel is not too significant, thereby tending to
improve the performance of the inverter including the heat
radiator.
BRIEF DESCRIPTION OF THE DRAWINGS
[0038] The appended drawings used in the description of the
exemplary embodiments will be described briefly as follows. The
appended drawings are used only to illustrate some exemplary
embodiments of the present disclosure. For those skilled in the
art, other drawings may be obtained according to the disclosure
that is provided herein without any inventive work.
[0039] FIG. 1 is a schematic structural diagram of a unidirectional
straight-through air channel according to the conventional
technology;
[0040] FIG. 2 is a schematic structural diagram of an inverter
heat-dissipation device according to the present disclosure;
[0041] FIG. 3 is another schematic structural diagram of an
inverter heat-dissipation device according to the present
disclosure;
[0042] FIG. 4 is still another schematic structural diagram of an
inverter heat-dissipation device according to the present
disclosure;
[0043] FIG. 5 is a schematic cross-sectional view of an inverter
according to the present disclosure;
[0044] FIG. 6 is a schematic structural diagram of an inverter
according to the present disclosure; and
[0045] FIG. 7 is another schematic structural diagram of an
inverter according to the present disclosure.
DETAILED DESCRIPTION OF THE DISCLOSED EXEMPLARY EMBODIMENTS
[0046] The exemplary embodiments of the present disclosure will be
described clearly and completely as follows in conjunction with the
appended drawings. The described exemplary embodiments are only a
few rather than all of the embodiments according to the present
disclosure. Other embodiments may be obtained by those skilled in
the art without any inventive work based on the detailed
description of the exemplary embodiments presented herein.
First Exemplary Embodiment
[0047] Reference is made to FIG. 2, which shows a schematic
structural diagram of an inverter heat-dissipation device according
to the present disclosure. The inverter heat-dissipation device
includes a centrifugal fan 11, a first heat radiator 12, a second
heat radiator 13 and an air channel 14.
[0048] A first air outlet 141 is arranged at one end of the air
channel 14, and a second air outlet 142 is arranged at the other
end of the air channel 14.
[0049] The first heat radiator 12 is arranged in the air channel 14
and is in communication with the first air outlet 141.
[0050] The second heat radiator 13 is arranged in the air channel
14 and is in communication with the second air outlet 142.
[0051] The centrifugal fan 11 is arranged in the air channel 14 and
is arranged between the first heat radiator 12 and the second heat
radiator 13.
[0052] An air inlet 143 matching the centrifugal fan 11 in size is
arranged on the air channel 14.
[0053] A first opening is arranged on the air channel 14, where a
first heating element of an inverter including the inverter
heat-dissipation device is installed onto the first heat radiator
12 through the first opening.
[0054] A second opening is arranged on the air channel 14, where a
second heating element of the inverter including the inverter
heat-dissipation device is installed onto the second heat radiator
13 through the second opening.
[0055] In an embodiment, the centrifugal fan 11 is arranged in the
air channel 14 and is arranged between the first heat radiator 12
and the second heat radiator 13. The first heat radiator 12 is
arranged at one end of the air channel 14, and the second heat
radiator 13 is arranged at the other end of the air channel 14.
After being drawn into the air channel 14 by the centrifugal fan
11, the cold air flows to the left and right through the first heat
radiator 12 and the second heat radiator 13 respectively, and then
flows out of the air channel through the air outlet 141 and the air
outlet 142.
[0056] In this embodiment, the centrifugal fan is disposed between
the two heat radiators, the first heat radiator is in communication
with the first air outlet, the second heat radiator is in
communication with the second air outlet, and air is drawn in at
the middle portion of the air channel and flows out from two ends
of the air channel. Hence, a length of the air channel (i.e., a
distance from the air inlet to the air outlet) is shortened; and a
width of the air channel is increased since the air flows out
through the two air outlets of the air channel simultaneously,
thereby reducing a pressure loss along the air channel, reducing a
load on the centrifugal fan, and thereby tending to extend the
service life of the centrifugal fan.
[0057] Since the air is drawn in at the middle portion of the air
channel and flows out from two ends of the air channel, the air
flowing through each of the two heat radiators in the air channel
is relatively cold air, and the heat-dissipation effect of the heat
radiator is enhanced as a result of not having hot air flowing
through the heat radiator. Problems of too high a temperature of
the heat radiator itself and thus increasingly worse
heat-dissipation effect due to the hot air continuously flowing
through the heat radiator in the air channel are also lessened, and
hence a difference between temperatures of the two heat radiators
in the air channel is not too significant, thereby tending to
improve the performance of the inverter including the heat
radiator.
[0058] Furthermore, with the inverter heat-dissipation device
according to the present disclosure, the pressure loss along the
air channel is reduced, the requirement for a configuration of the
centrifugal fan 11 is reduced, and hence the centrifugal fan 11
with higher cost-effectiveness may be selected, thereby reducing a
cost of the centrifugal fan 11.
[0059] In an embodiment, the air channel 14 includes an air channel
backboard 144 and a U-shaped groove 145.
[0060] The air channel backboard 144 is installed onto the U-shaped
groove 145.
[0061] In a case that the air channel 14 is composed of the air
channel backboard 144 and the U-shaped groove 145, the centrifugal
fan 11, the first heat radiator 12 and the second heat radiator 13
in the inverter heat-dissipation device shown in FIG. 2 are
arranged as follows.
[0062] The first heat radiator 12 and the second heat radiator 13
are installed fixedly at different points on the air channel
backboard 144, and the centrifugal fan 11 is installed fixedly on
the U-shaped groove 145, as shown in FIG. 3.
[0063] In an embodiment, the inverter heat-dissipation device
further includes a third air outlet 15 and a fourth air outlet 16,
as shown in FIG. 4.
[0064] The third air outlet 15 is arranged on a first lateral
surface of the air channel 14 and matches the centrifugal fan 11 in
size.
[0065] The fourth air outlet 16 is arranged on a second lateral
surface of the air channel 14 opposite to the first lateral surface
and matches the centrifugal fan 11 in size.
[0066] In a case that the inverter heat-dissipation device is
installed on the inverter, the third air outlet 15 and the fourth
air outlet 16 are configured to blow and cool heating elements
other than the first heating element and the second heating
element.
Second Exemplary Embodiment
[0067] Reference is made to FIG. 5, which shows a schematic
sectional view of an inverter according to the present disclosure.
The inverter includes a first heating element 51, a second heating
element 52 and an inverter heat-dissipation device 53.
[0068] The inverter heat-dissipation device 53 is the inverter
heat-dissipation device described in the first exemplary
embodiment, which therefore need not be further described here.
[0069] The first heating element 51 is installed onto the first
heat radiator 12 of the inverter heat-dissipation device 53 via the
first opening arranged on the air channel 14 of the inverter
heat-dissipation device 53.
[0070] The second heating element 52 is installed onto the second
heat radiator 13 of the inverter heat-dissipation device 53 via the
second opening arranged on the air channel 14 of the inverter
heat-dissipation device 53.
[0071] In an embodiment, the first heating element 51 is installed
onto a first heat radiator substrate via the first opening arranged
on the air channel 14 of the inverter heat-dissipation device 53,
and the first heat radiator substrate is a radiator substrate of
the first heat radiator 12.
[0072] The second heating element 52 is installed onto a second
heat radiator substrate via the second opening arranged on the air
channel 14 of the inverter heat-dissipation device 53, and the
second heat radiator substrate is a radiator substrate of the
second heat radiator 13.
[0073] Further, a heat conduction silicone is coated on a contact
surface between the first heating element 51 and the first heat
radiator substrate; and a heat conduction silicone is coated on a
contact surface between the second heating element 52 and the
second heat radiator substrate.
[0074] In an embodiment, a front-back box partition 23 of the
inverter may function as the air channel backboard 144, as shown in
FIG. 6 or FIG. 7.
[0075] In a case that the front-back box partition 23 functions as
the air channel backboard 144, the centrifugal fan 11, the first
heat radiator 12 and the second heat radiator 13 in the inverter
heat-dissipation device shown in FIG. 2 are arranged as
follows.
[0076] The first heat radiator 12 and the second heat radiator 13
are installed fixedly at different points on the front-back box
partition 23, and the centrifugal fan 11 is installed fixedly on
the U-shaped groove 145.
[0077] The first heat radiator 12 fits on the front-back box
partition 23 and is sealed, and the second heat radiator 13 fits on
the front-back box partition 23 and is sealed, thereby ensuring
that a front box has a sealing performance with a high IP class
(greater than or equal to IP65).
[0078] In an embodiment, openings with respective sizes are
arranged on the front-back box partition 23, for installing the
first heating element 51 onto the first heat radiator 12 and
installing the heating element 52 onto the second heat radiator
13.
[0079] The first heating element 51 and the second heating element
52 are arranged in a front box 21, and the inverter
heat-dissipation device 53 is arranged in a back box 22.
[0080] The back box 22 is an open box, and other elements and
members than the inverter heat-dissipation device 53 may also be
placed on the back box 22, for example an electrical element and
member, such as an inductor, a transformer, a fan and a pegboard.
It should be noted that, the electrical elements, such as the
inductor and the transformer, need to be filled and sealed or
processed in other ways, so as to meet an IP class requirement for
exposing to the atmospheric environment.
[0081] As shown in FIG. 7, the inverter according to the present
disclosure may further include a third heating element 71 and a
fourth heating element 72.
[0082] The third heating element 71 is arranged above the third air
outlet 15 in the inverter heat-dissipation device.
[0083] The fourth heating element 72 is arranged below the fourth
air outlet 16 in the inverter heat-dissipation device.
[0084] The number of the third heating elements 71 may be greater
than or equal to one.
[0085] The number of the fourth heating elements 72 may be greater
than or equal to one.
[0086] Accordingly, the inverter may further include a first row of
air vents 73 facing the third heating element 71 and a second row
of air vents 74 facing the fourth heating element 72.
[0087] The third heating element 71 and the fourth heating element
72 dissipate heat through their surfaces without a heat radiator.
The third heating element 71 discharges hot air and dissipates heat
via the third air outlet 15, and the fourth heating element 72
discharges hot air and dissipates heat through the fourth air
outlet 16. Hot air generated due to heat-dissipation of the third
heating element 71 is discharged to the external atmospheric
environment via the first row of air vents 73, and hot air
generated due to heat-dissipation of the fourth heating element 72
is discharged to the external atmospheric environment via the
second row of air vents 74.
[0088] In the discussion above, the embodiments are described in
progressive manner. Each embodiment mainly focuses on an aspect
difference from other embodiments, and reference can be made to
these similar parts among the embodiments. The device disclosed in
the embodiment corresponds to the method disclosed in the
embodiment, and is described relatively simply. For detailed
description of the device, reference may be made to the related
description of the method.
[0089] Finally, it should be further noted that the relationship
terminologies such as "first", "second" and the like are only used
herein to distinguish one entity or operation from another, rather
than to necessitate or imply that the actual relationship or order
exists between the entities or operations. Furthermore, terms of
"include", "comprise" or any other variants are intended to be
non-exclusive. Therefore, a process, method, article or device that
is said to include or comprise a plurality of elements includes not
only the specified elements but may also include other elements
that are not enumerated, or also include the elements inherent for
the process, method, article or device. Unless expressively limited
otherwise, the statement "comprising (including) one . . . " does
not exclude the case that other similar elements may exist in the
process, method, article or device.
[0090] The inverter heat-dissipation device and the inverter
according to the present disclosure are described in detail above.
Principles and implementations are clarified using specific
embodiments described herein. The above description of the
embodiments is only intended to help teach an understanding of the
apparatus and methods of the present disclosure. In addition,
changes can be made to the specific exemplary embodiments by those
skilled in the art based on the teachings of the present
disclosure. In summary, the specification should not be interpreted
as limiting the breadth of the present disclosure.
* * * * *