CN110932525B - Converter flow guiding device for balancing heat dissipation of multiple power modules and converter - Google Patents
Converter flow guiding device for balancing heat dissipation of multiple power modules and converter Download PDFInfo
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- CN110932525B CN110932525B CN201811076079.0A CN201811076079A CN110932525B CN 110932525 B CN110932525 B CN 110932525B CN 201811076079 A CN201811076079 A CN 201811076079A CN 110932525 B CN110932525 B CN 110932525B
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- cooling air
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
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Abstract
The invention relates to a converter flow guiding device for balancing heat dissipation of a plurality of power modules and a converter, relating to the technical field of railway vehicle converters, is used for providing a converter flow guiding device which can utilize the capacity of a cooling fan and the heat dissipation capacity of a radiator with maximum efficiency and can improve the integration level of a heat dissipation system structure, the invention relates to a flow guide device of a converter for balancing heat dissipation of a plurality of power modules, which comprises at least two flow guide plates, wherein the flow guide plates form the side wall of a cooling air duct, because the angle of the air outlet of the cooling air duct is proportional to the power (namely the power consumption) of the power modules, the cooling air quantity can be evenly distributed according to the power consumption proportion of each power module, therefore, the purposes of balancing the heat dissipation effect of each power module and improving the utilization rate of the fan capacity are achieved, and the integration level of the converter heat dissipation system is higher.
Description
Technical Field
The invention relates to the technical field of railway vehicle converters, in particular to a converter flow guiding device for balancing heat dissipation of a plurality of power modules and a converter.
Background
In recent years, with the flourishing development of national economy, the demand of passenger trains is continuously increased, which puts higher and higher requirements on the design of railway vehicles and parts thereof. The requirements of rail transit vehicles on the performance of the converter are higher and higher, the novel converter cabinet with small volume and large heat consumption gradually becomes the mainstream of market demands, and the converter cabinet with small volume and large power consumption must have a good heat dissipation design. The converter is used as a core component of the electric transmission railway vehicle, bears key functions of energy conversion, drive control and the like, and the quality of the cooling and heat dissipation system is directly related to the running state of the converter and the safe and stable running of the railway vehicle. The main components that generate heat in the converter cabinet body have devices such as power module (including rectifier module and contravariant module), transformer, charge/discharge resistance, support electric capacity, especially, as the most core part of converter system, and the IGBT chip wherein is restricted because of small and the thermal capacity, the temperature is easily promoted fast, therefore, the radiating efficiency who promotes power module is the proposition that converter cooling system design needs the most concern.
Meanwhile, along with the increasingly high requirements of the rail transit industry on the light weight and low noise vibration of the converter product, the design of a heat dissipation system of the converter can meet the requirements of maintaining normal working temperature, more reasonably design an air duct and more efficiently and reasonably utilize the working capacity of a fan, and can better meet the requirements of customers on the light weight and low noise of the product.
Disclosure of Invention
The invention provides a converter flow guiding device for balancing heat dissipation of a plurality of power modules and a converter, which are used for providing the converter flow guiding device which can utilize the capacity of a cooling fan and the heat dissipation capacity of a radiator to the maximum efficiency and can improve the integration level of a heat dissipation system structure, so that the converter can meet the requirements of light weight and low noise.
The invention provides a converter flow guide device for balancing heat dissipation of a plurality of power modules, which comprises at least two flow guide plates, wherein the flow guide plates form the side wall of a cooling air duct, and the included angle between the end part of each of the two flow guide plates of the cooling air duct, which is close to the center of a fan, and the central connecting line of the fan is the air outlet angle of the cooling air duct;
each cooling air channel corresponds to a power module to be cooled, and the angle of an air outlet of the cooling air channel and the power of the power module corresponding to the cooling air channel meet the following defined formula:
α1:α2:…:αn＝k·(P1:P2:…:Pn)；
wherein alpha isnThe angle of an air outlet of the nth cooling air duct is set;
Pnthe power of the power module corresponding to the nth cooling air channel;
n is the number of the guide plates;
k is a constant between 0.5 and 1.5.
In one embodiment, the outlet angle of the cooling air duct satisfies the following defined formula:
α1+α2+…+αn＝360°。
in one embodiment, the number of baffles is four, and the baffles are perpendicular to each other.
In one embodiment, the baffles are each vertically disposed on a floor that forms a bottom wall of the cooling air duct.
In one embodiment, the air inlet of the cooling air duct is disposed below the corresponding power module, and the air outlet of the cooling air duct is disposed at the air inlet of the fan.
In one embodiment, a partition plate is arranged above the flow guide plate, the partition plate forms a top wall of the cooling air duct, the fan is arranged on the partition plate, and an air inlet of the fan faces the bottom plate.
In one embodiment, the partition plate is provided with an air inlet channel, and the air inlet channel is connected with an air inlet of the cooling air duct.
In one embodiment, the baffle and the floor and the baffle are connected by welding.
In one embodiment, the connection between the guide plate and the bottom plate and the connection between the guide plate and the partition plate are provided with a sealant.
The invention also provides a converter, which comprises the converter flow guide device for balancing heat dissipation of the plurality of power modules.
Compared with the prior art, the invention has the advantages that: because the air outlet angle of the cooling air duct is proportional to the power (namely power consumption) of the power modules, the cooling air quantity can be uniformly distributed according to the power consumption proportion of each power module, so that the purposes of balancing the heat dissipation effect of each power module and improving the utilization rate of fan capacity are achieved, and the integration level of the converter heat dissipation system is higher.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view of a current transformer deflector according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the partition shown in FIG. 1 (without the air inlet duct);
FIG. 3 is a schematic perspective view of a cooling air duct (not shown) according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a baffle in an embodiment of the present invention;
FIG. 5 is a bottom view of a deflector assembly of an embodiment of the invention (bottom plate not shown);
fig. 6 is an exploded view of a current transformer in an embodiment of the present invention;
fig. 7 is a schematic flow direction diagram of cooling wind in the converter in the embodiment of the present invention.
Reference numerals:
100-a power module;
1-a first main inverter module; 2-a second main inversion module; 3-a rectifying module; 4-auxiliary inversion module;
5-a first filter screen; 6-a second filter screen; 7-a third filter screen; 8-a fourth filter screen; 9-a transformer; 19-a cabinet body;
200-a converter flow guiding device;
10-a fan; 11-a separator; 12-a base plate; 13-a deflector;
14-a cooling air duct;
141-a first cooling air duct; 142-a second cooling air duct; 143-third cooling air duct; 144-a fourth cooling air duct;
15-air outlet of cooling air duct; 16-air inlet of cooling air duct; 17-air inlet channel; 18-an air inlet of the fan;
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, according to a first aspect of the present invention, there is provided a current transformer flow guiding device for equalizing heat dissipation of multiple power modules, which includes at least two flow guiding plates 13, where the flow guiding plates 13 form side walls of a cooling air duct 14, and as shown in fig. 3, an included angle between a connection line between end portions of the two flow guiding plates 13 of the cooling air duct 14 close to a center of a fan 10 and the center of the fan 10 is an air outlet angle of the cooling air duct 14.
Each cooling air duct 14 corresponds to one power module 100 to be cooled, and the air outlet angle of the cooling air duct 14 and the power of the corresponding power module 100 satisfy the following defined formula:
α1：α2：...：αn＝k·(P1：P2：...：Pn)；
wherein alpha isnThe angle of an air outlet of the nth cooling air duct is set;
Pnthe power of the power module corresponding to the nth cooling air channel;
n is the number of the guide plates;
k is a constant between 0.5 and 1.5.
In a preferred embodiment, k is 1. That is, the ratio of the outlet angles of the cooling air ducts 14 is equal to the ratio of the powers of the corresponding power modules 100.
Further, the air outlet angle of the cooling air duct 14 satisfies the following defined formula:
α1+α2+…+αn＝360°。
in the following description, if n is 4, that is, if the number of the baffles 13 is four, four baffles 13 constitute the side walls of four cooling air ducts 14, and two cooling air ducts 14 share one baffle 13.
As shown in fig. 3 and 4, the air outlet angles of the four cooling air ducts 14 are respectively α1，α2，α3，α4And α is1+α2+α3+α4360 deg.. The power of the four power modules 100 corresponding to the four cooling air ducts 14 is P1，P2，P3，P4Then, the relationship between the angle of the air outlet and the power is as follows:
α1：α2：α3：α4＝P1：P2：P3：P4
that is, the ratio of the angles of the air outlets of the four cooling air ducts 14 is the same as the ratio of the powers of the corresponding power modules 100.
It should be noted that, the cooling air ducts 14 described herein correspond to the power modules 100, that is, one cooling air duct 14 is disposed below (or on a side portion of) each power module 100, and the power module 100 corresponds to the cooling air duct 14 below (or on the side portion of) the power module 100.
Assume power between power modules 100 is P1＞P2＞P3＞P4I.e. the power of the first power module is the maximum, then it can be seen from the above expression that the outlet angle should also satisfy a1＞α2＞α3＞α4Namely, the angle of the air outlet of the cooling air duct corresponding to the power module with the maximum power is the maximum; and the angle of the air outlet of the cooling air duct corresponding to the power module with the minimum power is minimum.
Because the angle of the air outlet is related to the wind resistance in the cooling air duct 14, that is, the larger the angle of the air outlet is, the smaller the wind resistance in the cooling air duct 14 is, and the larger the air volume is. For the power module 100 with larger power, the angle of the air outlet of the cooling air duct 14 below the power module is set to be larger, so that the cooling air can more and faster pass through the cooling air duct, and the cooling air volume is evenly distributed according to the power consumption proportion of each power module 100, that is, the heat dissipation effect of each power module 100 can be balanced, and the utilization rate of the fan capacity is improved.
It should be noted that the hatching in fig. 3 is only used to distinguish four different cooling air ducts 14.
Further, for convenience of installation, the baffles 13 are perpendicular to each other, and the baffles 13 are vertically arranged on the bottom plate 12, that is, the baffles 13 are perpendicular to each other and the baffles 13 and the bottom plate 12 are perpendicular to each other.
Specifically, the length direction of the baffle 13 is along the radial direction of the fan 10, and the end of the baffle 13 close to the fan 10 is located within the radius range of the air inlet 18 of the fan, that is, the projection of the distance between the end of the baffle 13 and the center of the fan 10 on the bottom plate 12 is substantially equal to the radius of the air inlet 18 of the fan, so that the air passage independence in the guiding device 200 is ensured, and the air passage flow resistance of the air inlet 18 of the fan is not excessively increased.
Wherein, the air inlet 16 of the cooling air duct is arranged below the corresponding power module 100, and the air outlet 15 of the cooling air duct is arranged at the air inlet 18 of the fan. Preferably, the cooling air duct 14 should be disposed right below the power module 100 corresponding to the cooling air duct, so that the cooling air can smoothly flow through each air duct in the guiding device 200 after passing through the heat sink, thereby reducing the wind resistance of the cooling air entering the cooling air duct 14.
A partition plate 11 is arranged above the guide plate 13, and the fan 10 is arranged on the partition plate 11, as shown in fig. 5, and an air inlet 18 of the fan faces the bottom plate 12.
The baffle 13 is thus arranged between the partition 11 and the bottom plate 12, so that the baffle 13 forms the side wall of the cooling air duct 14, as shown in fig. 3, the bottom plate 12 forms the bottom wall of the cooling air duct 14, and the partition 11 forms the top wall of the cooling air duct 14. The flow direction of the cooling air is from the power module 100 to the air inlet 16 of the cooling air duct, and flows through the cooling air duct 14, and then flows out from the air outlet 15 of the cooling air duct, and enters the fan 10 through the air inlet 18 of the fan.
Meanwhile, the guide plate 13 is arranged between the partition plate 11 and the bottom plate 12, so that the guide plate 13 plays a role of a reinforcing rib, the supporting effect on the fan 10 is enhanced, the vibration of the fan mounting seat can be well slowed down when the fan 10 works, and the reliability of the fan mounting seat is enhanced.
In addition, the partition board 11 is provided with an air inlet channel 17, and the air inlet channel 17 is connected with an air inlet 16 of the cooling air duct. Thus, the flow direction of the cooling air is: the cooling air passing through the power module 100 flows into the air inlet 16 of the cooling air duct along the air inlet channel 17, flows through the cooling air duct 14, flows out of the air outlet 15 of the cooling air duct, and then enters the fan 10 through the air inlet 18 of the fan.
Wherein the fan 10 is a centrifugal fan.
The guide plate 13 and the bottom plate 12 and the guide plate 13 and the partition plate 11 are connected through welding. Specifically, the guide plate 13 is firstly installed on the partition plate 11 by adopting a fillet welding mode, and the guide plate 13 is fixed with the bottom plate 12 by adopting a plug welding mode after the bottom plate 12 is connected with the partition plate 11 because the bottom plate 12 is provided with the plug welding hole.
Furthermore, the joints of the guide plate 13 and the bottom plate 12 and the joints of the guide plate 13 and the partition plate 11 are provided with sealing glue, so that the sealing performance of the cooling air duct 14 is ensured.
As shown in fig. 6, according to a second aspect of the present invention, there is provided a converter, which includes the above-mentioned converter diversion device for equalizing heat dissipation of multiple power modules, and further includes a cabinet 19, and a power module 100, a transformer, a fan 10 and a filter screen disposed above the power module 100, which are disposed in the cabinet 19.
Wherein, power module 100 includes first main contravariant module 1, the main contravariant module 2 of second, rectifier module 3 and supplementary contravariant module 4, and the filter screen is including setting up the first filter screen in first main contravariant module 1 top, setting up the second filter screen in the main contravariant module 2 top of second, setting up the third filter screen in rectifier module 3 top and setting up the fourth filter screen in supplementary contravariant module 4 top.
Wherein, the maximum power loss of the first main inversion module 1 is P1The maximum power loss of the second main inversion module 2 is P2Maximum power loss of the rectifier module is P3The maximum power loss of the auxiliary inversion module is P4The power consumption of each module is different. Because the highest temperature resistance of the IGBT and the diode of the core devices in the four power modules is 150 ℃, and the specifications of the radiators behind the power modules are not greatly different, the cooling air quantity required by the full-load operation of the converter is different, and the effect of balanced cooling is achievedThe cooling air flow requirements of the four modules are distributed according to the proportion of the power consumption.
The converter adopts a forced air cooling mode of four air inlets with air inlet at the top and air outlet at the bottom. When the fan 10 works, cooling air outside the cabinet 19 is sucked into the cabinet 19 by the pressure difference between the front side and the rear side to cool related devices. Wherein first filter screen 5, second filter screen 6, third filter screen 7 and fourth filter screen 8 are located the air intake department on four power module upper reaches respectively, four cooling power module wind channels of four power module 100 distribute in both ends around the converter two liang, four cooling power module wind channels are parallelly connected each other, after cooling each power module 100, get into cooling air duct 16 through inlet air duct 17, flow out and converge fan 10 together by cooling air duct's air outlet 15, and then cool off other devices such as transformer 9 on fan 10 low reaches again, discharge outside cabinet 19 through the air outlet filter screen at last.
However, in order to improve the filtering effect of the filter screen as much as possible, the area of the air inlet must be increased to the greatest extent by using the structural characteristics of the converter to reduce the air speed of the inlet air, so that the method for adjusting the air volume of the air channels of the four cooling power modules by using the area of the air inlet is obviously not feasible. If the cooling effect of the module is adjusted by changing the specification of the radiator, obviously, when the power module with larger power consumption is cooled by the radiator, the flow rate of the air channel is required to be faster or the heat dissipation area is larger, and obviously, the requirements of high integration degree and light weight of a converter product are not met. Therefore, it is necessary to design the flow guiding device 200 of the inverter, which can distribute the cooling air volume of each air channel in a fixed proportion, in the cavity between the partition 11 and the bottom plate 12.
As shown in fig. 7, the arrow direction represents the flow direction of the cooling air, the converter guiding device 200 is located between the radiator and the fan 10, the intake air passes through the filter screen cooling power module, the converter guiding device 200 distributes the cooling air volume of the four power modules according to the power consumption proportion, the downstream transformer is cooled after passing through the fan 10, and finally the downstream transformer is cooled through the filter screen of the air outlet to discharge air, and the converter operates according to the cooling cycle when in operation.
Therefore, as shown in fig. 6, a first cooling air duct 141 is disposed right below the first main inverter module 1, a second cooling air duct 142 is disposed right below the second main inverter module 2, a third cooling air duct 143 is disposed right below the rectifier module 3, and a fourth cooling air duct 144 is disposed right below the auxiliary inverter module 4, where the relationship between the power module and the cooling air ducts is the corresponding relationship described herein.
The outlet angle of the first cooling air duct 141 is α1The outlet angle of the second cooling air duct 142 is α2The outlet angle of the third cooling air duct 143 is α3The outlet angle of the fourth cooling air duct 144 is α4To achieve the effect of uniform cooling, the ratio of the air outlet angles is equal to the ratio of the powers of the corresponding power modules 100, i.e. α1:α2:α3:α4＝P1:P2:P3:P4Therefore, the cooling air volume is evenly distributed according to the power ratio of each power module 100, so as to achieve the purposes of balancing the heat dissipation effect of each power module 100 and improving the utilization rate of the capacity of the fan 10.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The converter flow guide device for balancing heat dissipation of a plurality of power modules is characterized by comprising at least two flow guide plates, wherein the flow guide plates form the side wall of a cooling air duct, and the included angle between the end part of each of the two flow guide plates of the cooling air duct, which is close to the center of a fan, and the central connecting line of the fan is the air outlet angle of the cooling air duct;
each cooling air channel corresponds to a power module to be cooled, and the angle of an air outlet of the cooling air channel and the power of the power module corresponding to the cooling air channel meet the following defined formula:
α1:α2:…:αn＝k·(P1:P2:…:Pn)；
wherein alpha isnThe angle of an air outlet of the nth cooling air duct is set;
Pnthe power of the power module corresponding to the nth cooling air channel;
n is the number of the guide plates;
k is a constant between 0.5 and 1.5.
2. The converter flow guide device for equalizing heat dissipation of a plurality of power modules according to claim 1, wherein an air outlet angle of the cooling air duct satisfies the following defined formula:
α1+α2+…+αn＝360°。
3. the current transformer flow guiding device for equalizing heat dissipation of multiple power modules according to claim 1 or 2, wherein the number of the flow guiding plates is four, and the flow guiding plates are perpendicular to each other.
4. The current transformer flow guide device for equalizing heat dissipation of a plurality of power modules of claim 3, wherein said flow guide plates are each vertically disposed on a bottom plate, said bottom plate constituting a bottom wall of said cooling air duct.
5. The converter flow guide device for equalizing heat dissipation of multiple power modules according to claim 4, wherein an air inlet of the cooling air duct is disposed below the corresponding power module, and an air outlet of the cooling air duct is disposed at an air inlet of the fan.
6. The device for guiding current transformer to equalize heat dissipation of multiple power modules as claimed in claim 5, wherein a partition is disposed above said flow guide plate, said partition forms a top wall of said cooling air duct, said blower is disposed on said partition, and an air inlet of said blower faces said bottom plate.
7. The device for guiding current transformer to equalize heat dissipation of a plurality of power modules as claimed in claim 6, wherein said partition is provided with an air inlet channel, and said air inlet channel is connected to an air inlet of said cooling air duct.
8. The current transformer flow guide device for equalizing heat dissipation of a plurality of power modules of claim 6, wherein said flow guide plate is connected to said bottom plate and said flow guide plate is connected to said partition plate by welding.
9. The device of claim 8, wherein sealant is disposed at the connection between the flow guide plate and the bottom plate and at the connection between the flow guide plate and the partition plate.
10. A power converter comprising the power converter air guiding device for equalizing heat dissipation of a plurality of power modules of any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811076079.0A CN110932525B (en) | 2018-09-14 | 2018-09-14 | Converter flow guiding device for balancing heat dissipation of multiple power modules and converter |
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| CN201811076079.0A CN110932525B (en) | 2018-09-14 | 2018-09-14 | Converter flow guiding device for balancing heat dissipation of multiple power modules and converter |
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| CN110932525B true CN110932525B (en) | 2021-06-04 |
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| CN112904984A (en) * | 2021-02-10 | 2021-06-04 | 山东英信计算机技术有限公司 | Fanless server heat dissipation system, method and medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201146656Y (en) * | 2007-08-31 | 2008-11-05 | 中兴通讯股份有限公司 | Device for guiding airflow of inserting box |
| CN102011686A (en) * | 2009-09-04 | 2011-04-13 | 邱金和 | Wind-guiding device for vertical spindled windmill generator |
| CN104394677A (en) * | 2014-11-28 | 2015-03-04 | 中国航空工业集团公司第六三一研究所 | Large power consumption avionic electronic equipment air-cooling machine case with self-contained fan and capable of distributing air quantity |
| CN205227726U (en) * | 2015-12-11 | 2016-05-11 | 长沙广义变流技术有限公司 | Wind guiding mechanism |
| JP2017112129A (en) * | 2015-12-14 | 2017-06-22 | 日東工業株式会社 | Fan unit |
-
2018
- 2018-09-14 CN CN201811076079.0A patent/CN110932525B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201146656Y (en) * | 2007-08-31 | 2008-11-05 | 中兴通讯股份有限公司 | Device for guiding airflow of inserting box |
| CN102011686A (en) * | 2009-09-04 | 2011-04-13 | 邱金和 | Wind-guiding device for vertical spindled windmill generator |
| CN104394677A (en) * | 2014-11-28 | 2015-03-04 | 中国航空工业集团公司第六三一研究所 | Large power consumption avionic electronic equipment air-cooling machine case with self-contained fan and capable of distributing air quantity |
| CN205227726U (en) * | 2015-12-11 | 2016-05-11 | 长沙广义变流技术有限公司 | Wind guiding mechanism |
| JP2017112129A (en) * | 2015-12-14 | 2017-06-22 | 日東工業株式会社 | Fan unit |
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