CN115643721A - Temperature-equalizing small-volume bidirectional converter with lower air inlet adopted in heat dissipation air duct - Google Patents
Temperature-equalizing small-volume bidirectional converter with lower air inlet adopted in heat dissipation air duct Download PDFInfo
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- CN115643721A CN115643721A CN202211171467.3A CN202211171467A CN115643721A CN 115643721 A CN115643721 A CN 115643721A CN 202211171467 A CN202211171467 A CN 202211171467A CN 115643721 A CN115643721 A CN 115643721A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 47
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 34
- 238000005192 partition Methods 0.000 claims abstract description 32
- 238000000605 extraction Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 5
- 229920000742 Cotton Polymers 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 4
- 241000238631 Hexapoda Species 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000000284 extract Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The heat dissipation air duct adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, and comprises a cabinet body, an installation base, a plurality of power units, an air inlet outer frame and a heat dissipation fan, wherein an opening of the air inlet outer frame faces downwards; is characterized in that: the front end and the rear end of the power unit are respectively provided with a front partition plate and a rear partition plate, an air distribution duct is formed between the front partition plate and the power unit mounting frame, and an air extraction duct is formed behind the rear partition plate; the lower end of the air distribution duct is communicated with the air inlet duct, and the upper end of the air extraction duct is communicated with the heat dissipation fan; and a power unit air suction opening is formed in the position, on the rear partition plate, of the air outlet of the power unit, and the air outlet of the power unit is communicated with the air suction duct through the power unit air suction opening. According to the small-volume bidirectional converter with the temperature uniformity, the air draft air channel only extracts air through the air draft opening, so that the negative pressure values at all positions of the air draft air channel are basically equal, uniform heat dissipation of all power units is effectively guaranteed, and power devices in all power units have good temperature uniformity.
Description
Technical Field
The invention relates to a bidirectional converter, in particular to a temperature-equalizing small-volume bidirectional converter with a heat dissipation air duct adopting lower air inlet.
Background
With the requirements on the reliability and the environmental adaptability of power electronic products in the rail transit industry being higher and higher, the small-size bidirectional converter product is favored by users more and more. Bidirectional converter mainly comprises rectifier module and contravariant module, and the contravariant module comprises for the power unit who comprises controllable power device, and power unit's power device is main original piece that generates heat in the contravariant process, if dispel the heat not up to standard, then can lead to the unable work of power unit or damage. Therefore, after the bidirectional ac inverter is miniaturized, how to ensure the effective heat dissipation performance is the key of cabinet design and heat dissipation channel layout.
Disclosure of Invention
In order to overcome the defects of the technical problems, the invention provides a temperature-equalizing small-volume bidirectional converter with a radiating air duct adopting lower air inlet.
The heat dissipation air channel adopts a temperature-equalizing small-volume bidirectional converter with downward air inlet, and comprises a cabinet body, an installation base, a plurality of power units, an air inlet outer frame and a heat dissipation fan, wherein the installation base is fixed at the lower end of the cabinet body; the power units are arranged on a power unit mounting frame in the cabinet body, an air inlet grille is arranged below the front ends of the power units, the air inlet grille is aligned with the power unit radiating fins in the power units, and air outlets of the power units are arranged at the rear ends of the power units; the method is characterized in that: a front partition plate is arranged on the outer side of the front end of the power unit, a rear partition plate is arranged on a power unit mounting frame at the rear end of the power unit, an air distribution duct is formed between the front partition plate and the power unit mounting frame, and an air exhaust duct is formed behind the rear partition plate; the lower end of the air distribution duct is communicated with the air inlet duct, and the upper end of the air extraction duct is communicated with an air inlet of the heat radiation fan;
an air inlet is formed below the front end of each power unit, and an air inlet grille is communicated with the air distribution channel through the air inlet; and a power unit air suction opening is formed in the position, on the rear partition plate, of the air outlet of the power unit, and the air outlet of the power unit is communicated with the air suction duct through the power unit air suction opening.
The heat dissipation air duct adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, a rectifier module radiating fin is arranged below the power unit, a cavity where the rectifier module radiating fin is located is communicated with the air distribution duct, and a rectifier module air suction opening is formed in the position, corresponding to the cavity where the rectifier module radiating fin is located, of the rear partition plate.
The heat dissipation air duct adopts a temperature-equalizing small-volume bidirectional converter for lower air inlet, an air outlet duct is connected to an air outlet of the heat dissipation fan, a rain shielding device is arranged at an outlet of the air outlet duct, and a supporting vertical plate for supporting the air outlet duct is arranged on the outer side of the cabinet body.
The heat dissipation air duct adopts a temperature-equalizing small-volume bidirectional converter for lower air inlet, a plurality of blades swinging along with wind are uniformly arranged on the rain shielding device at intervals, and the blades are used for preventing rain and snow from entering the air outlet air duct.
The heat dissipation air duct adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, filter cotton is arranged in the air inlet duct, the filter cotton is fixed on a detachable filter cotton outer frame, and the filter cotton outer frame is fixedly connected with a cabinet body through a fixing bolt.
The heat dissipation air duct adopts a temperature-equalizing small-volume bidirectional converter for lower air inlet, and the air outlet duct is internally provided with a separation net for preventing flying insects and suspended matters in air from entering.
The beneficial effects of the invention are: according to the temperature-equalizing small-volume bidirectional converter, the bottom of the cabinet body is provided with the air inlet duct with the downward opening, the front side and the rear side of the power unit are respectively provided with the front partition plate and the rear partition plate, so that an air distribution duct with the lower end communicated with the air inlet duct and an air extraction duct with the upper end communicated with the air inlet of the heat dissipation fan are formed; an air inlet is arranged below the front end of the power unit, a power unit air suction opening aligned with the power unit air outlet is formed in the rear partition plate, so that under the air suction effect of the heat dissipation fan, outside air enters the air inlet air channel through the bottom and then flows into the power unit radiating fins through the air distribution channel, the air inlet and the air inlet grids in sequence to take away heat emitted by the power unit radiating fins, the heat dissipation and cooling of power devices in the power unit are achieved, and then the air is exhausted through the power unit air outlet, the air suction channel and the heat dissipation fan in sequence.
Furthermore, the cavity where the rectifying module radiating fins are located is also communicated with the air distribution channel, and the air suction channel is communicated with the cavity where the rectifying module radiating fins are located through the rectifying module air suction opening in the rear partition plate, so that the rectifying device in the rectifying module is effectively radiated, and the normal work of the rectifying module is ensured.
Furthermore, the air outlet duct connected with the heat dissipation fan from the air outlet is provided with the blades swinging along with the wind, so that rain and snow can be effectively prevented from entering the air outlet duct, the phenomena of short circuit and damage of internal electric devices and the like are avoided, the environmental adaptability of the air outlet duct is improved, various requirements on the environment are reduced, and the air outlet duct is particularly suitable for outdoor products.
Further, the filter cotton outer frame is detachably arranged on the cabinet body through a fixing bolt, namely the drawer type drawing design idea is adopted, and the workload of field maintenance is greatly reduced. Meanwhile, the filter cotton can be easily disassembled and replaced without stopping to maintain the product, and the requirement of the filter cotton on the continuous work of the product is ensured. Regular cleaning work is carried out on the product, and the maintainability of the product is greatly improved.
Drawings
Fig. 1 is a front view of a temperature-equalizing small-volume bidirectional converter of the present invention;
fig. 2 is a rear view of the temperature-uniformed small-sized bidirectional converter of the present invention;
fig. 3 is a left side view of the temperature-uniformed small-volume bidirectional converter of the present invention;
fig. 4 is a top view of the temperature-equalizing small-volume bidirectional current transformer of the present invention;
fig. 5 is a bottom view of the temperature-equalizing small-volume bidirectional current transformer of the present invention;
fig. 6 is a perspective view of the temperature-uniformed small-volume bidirectional current transformer of the present invention;
FIG. 7 isbase:Sub>A cross-sectional view of section A-A of FIG. 1;
FIG. 8 is a cross-sectional view of section B-B of FIG. 1;
fig. 9 to 13 are partial sectional views of the temperature-uniformed small-volume bidirectional current transformer of the present invention;
FIG. 14 is an enlarged view of a portion of the area A in FIG. 1;
FIG. 15 is a front view of a power unit of the present invention;
FIG. 16 is a rear view of the power unit of the present invention;
FIG. 17 is a top view of a power cell of the present invention;
fig. 18 is a bottom view of the power unit of the present invention.
In the figure: the solar energy power generation cabinet comprises a cabinet body 1, a mounting base 2, a power unit 3, rectifier module radiating fins 4, power unit radiating fins 5, an air inlet outer frame 6, a front partition plate 7, a rear partition plate 8, a heat dissipation fan 9, an air inlet duct 10, an air distribution duct 11, an air exhaust duct 12, an air outlet duct 13, filter cotton 14, a rain shielding device 15, a supporting vertical plate 16, a cabinet door 17, an air inlet 18, a power unit air exhaust opening 19, a rectifier module air exhaust opening 20, a power unit air outlet 21, an air inlet grille 22, a filter cotton outer frame 23 and fixing bolts.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1 to 6,base:Sub>A front view,base:Sub>A rear view,base:Sub>A left view,base:Sub>A top view,base:Sub>A bottom view andbase:Sub>A perspective view of the temperature-equalizing small-volume bidirectional converter of the invention are respectively shown, fig. 7 and fig. 8 respectively showbase:Sub>A cross section ofbase:Sub>A-base:Sub>A andbase:Sub>A cross section of B-B in fig. 1, and fig. 9 to fig. 13 showbase:Sub>A partial cross section of the temperature-equalizing small-volume bidirectional converter of the invention, which is composed ofbase:Sub>A cabinet body 1,base:Sub>A mounting base 2,base:Sub>A power unit 3, an air inlet outer frame 6,base:Sub>A front partition 7,base:Sub>A rear partition 8,base:Sub>A heat dissipation fan 9 and an air outlet duct 13, wherein the cabinet body 1 playsbase:Sub>A role in fixing and supporting,base:Sub>A frame for bearing each functional module is arranged inside the cabinet body 1, andbase:Sub>A cabinet door 17 is arranged at the front end of the cabinet body 1. The mounting base 2 is fixed at the lower end of the cabinet body 1, and the mounting base 2 is fixed with the base or the foundation, so that the cabinet body 1 is fixedly mounted. The air inlet frame 6 is located the below of the cabinet body 1, and the air inlet frame 6 is the air inlet duct 10 towards the open-down in the air inlet frame 6, like this, and external air gets into through the bottom, and air inlet duct 10 is the lower air inlet, and this kind of air inlet mode does not influence the arrangement of other equipment around the cabinet body 1.
The quantity of the power units 3 is multiple, the power units 3 are arranged on the power unit mounting frame located in the cabinet body 1, the front partition 7 is arranged on the outer side of the front end of each power unit 3, the rear partition 8 is arranged on the power unit mounting frame at the rear end of each power unit 3, an air distribution duct 11 is formed between the front partition 7 and the front end face of the power unit mounting frame, and an air exhaust duct 12 is formed behind the rear partition 8. The number of the heat dissipation fans 9 is multiple (3 in the figure), the air inlets of the heat dissipation fans 9 are communicated with the upper end of the air exhaust duct 12, and the air outlets of the heat dissipation fans 9 are provided with air outlet ducts 13. The lower end of the air distribution duct 11 is communicated with the upper end of the air inlet duct 10, and air entering through the air inlet duct 10 firstly enters the air distribution duct 11.
As shown in fig. 15 to fig. 19, a front view, a rear view, a top view, a bottom view and a perspective view of the power unit of the present invention are respectively given, the power unit is provided with a power unit heat sink 5 for dissipating heat of a power device, and the power device is used as a main heating element in a working process of a converter, and most importantly, the power device is ensured to have a good heat dissipation effect. The lower part of the front end of the power unit 3 is provided with an air inlet grille 22, and the air inlet grille 22 is aligned with the power unit radiating fins 5, so that air entering from the air inlet grille 22 is firstly blown onto the power unit radiating fins 5 to realize the heat dissipation of the power unit radiating fins. The rear end of the power unit 3 is provided with a power unit air outlet 21, and air after heat dissipation of the power unit heat sink 5 is discharged through the power unit air outlet 21.
Enough cavities are reserved below each power unit 3 to form air inlets 18, and the air inlets 18 realize the communication between the air distribution duct 11 and the air inlet grille 22, so that air in the air distribution duct 11 enters the power units 3 through the air inlets 18 and the air inlet grille 22 in sequence. The rear partition 8 is provided with power unit air suction ports 19 at positions corresponding to the power unit air outlets 21 of the power units 3, so that the relative negative pressure state in the air suction duct 12 can draw the air in the power units 3 out of the power unit air outlets 21 and the power unit air suction ports 19 in sequence.
For a bidirectional converter, a rectifier device in a rectifier module is also one of main heat generating devices, so that heat dissipation is also performed on a power device. The rectifier module is positioned below the power unit 3, a cavity where the rectifier module radiating fins 4 are positioned is communicated with the air distribution duct 11, and a rectifier module air suction opening 20 communicated with the cavity where the rectifier module radiating fins 4 are positioned is formed in the rear partition plate 8.
Thus, under the air draft effect of the heat dissipation fan 9, outside air enters the air inlet duct 10 through the bottom, then flows into the position of the power unit heat dissipation fin 5 through the air distribution duct 11, the air inlet 18 and the air inlet grille 22 in sequence, takes away heat emitted by the power unit heat dissipation fin 5, and then is discharged through the power unit air outlet 21, the power unit air suction opening 19 and the air suction duct 12 in sequence, so as to realize heat dissipation of power devices in the power unit 3.
Similarly, the outside air entering through the air inlet duct 10 flows into the cavity where the rectifier module heat sink 4 is located through the air distribution duct 11, takes away the heat emitted by the rectifier module heat sink 4, and then flows into the air extraction duct 12 through the rectifier module air extraction opening 20, so as to realize the heat dissipation of the rectifier device in the rectifier module.
Fig. 12 shows that the power unit suction opening 19 and the rectifier module suction opening 20 formed in the rear partition 8 are both small, so that the negative pressure in each position in the suction duct 12 is basically consistent with the external negative pressure under the negative pressure suction effect of the heat dissipation fan 9, and the heat dissipation airflow flowing through the cavity where the rectifier module heat dissipation fins 4 of each power unit 3 are located is basically consistent with each other, thereby ensuring the temperature uniformity of the power devices in the power units 3 and the temperature uniformity of the rectifier devices in the rectifier modules, and ensuring the working states of the power devices and the rectifier devices to be consistent with each other due to the temperature uniformity, thereby ensuring that the bidirectional converter has a good working state.
The air inlet duct 10 is provided with filter cotton 14, and the filter cotton 14 isolates impurities such as dust in the air outside and prevents the impurities from entering the cabinet body 1. Since the filter cotton 14 needs to be replaced after being used for a period of time, the filter cotton 14 is designed into a drawer type structure, the periphery of the filter cotton 14 is fixed on a filter cotton outer frame 23, as shown in fig. 14, which shows a partial enlarged view of the area a in fig. 1, and the filter cotton outer frame 23 is fixed at the bottom of the cabinet body 1 through a fixing bolt 24. Therefore, the filter cotton can be easily disassembled and replaced to maintain the product without stopping, and the requirement on continuous work of the product is ensured.
The outlet of the air outlet duct 13 is provided with a rain shielding device 15, the rain shielding device 15 is composed of a plurality of blades swinging along with the wind, and the blades are used for preventing rain and snow from entering the air outlet duct 13, so that the phenomena that rain, snow, sand and dust and the like enter the structure and cause short circuit damage of internal electric devices and the like are prevented. Improves the environmental adaptability, reduces various requirements on the environment, and is particularly suitable for outdoor products.
Because the temperature of the air discharged through the air outlet duct 13 is high, in order to prevent the discharged air from entering the air inlet duct 10 again, the supporting vertical plate 16 is arranged on the outer side of the cabinet body 1, and the air with high temperature discharged through the air outlet duct 13 cannot enter the air inlet duct 10 again after being separated by the supporting vertical plate 16. Meanwhile, the supporting vertical plate 16 also realizes the supporting function for the air outlet duct 13.
Claims (6)
1. A temperature-equalizing small-volume bidirectional converter with a heat dissipation air channel adopting downward air inlet comprises a cabinet body (1), an installation base (2), a plurality of power units (3), an air inlet outer frame (6) and a heat dissipation fan (9), wherein the installation base is fixed at the lower end of the cabinet body, the air inlet outer frame is fixed at the lower end of the cabinet body in a mode that an opening faces downwards, and an air inlet air channel (10) is formed in the air inlet outer frame; the power units are arranged on a power unit mounting frame in the cabinet body, an air inlet grille (22) is arranged below the front ends of the power units, the air inlet grille is aligned with the power unit radiating fins (5) in the power units, and an air outlet (21) of the power units is arranged at the rear ends of the power units; the method is characterized in that: a front partition plate (7) is arranged on the outer side of the front end of the power unit, a rear partition plate (8) is arranged on a power unit mounting frame at the rear end of the power unit, an air distribution duct (11) is formed between the front partition plate and the power unit mounting frame, and an air extraction duct (12) is formed behind the rear partition plate; the lower end of the air distribution duct is communicated with the air inlet duct (10), and the upper end of the air extraction duct is communicated with the air inlet of the heat radiation fan;
an air inlet (18) is formed below the front end of each power unit (3), and an air inlet grille (22) is communicated with the air distribution duct (11) through the air inlet (18); a power unit air suction opening (19) is formed in the position, on the rear partition plate (8), of the power unit air outlet (21), and the power unit air outlet is communicated with the air suction duct (12) through the power unit air suction opening.
2. The heat dissipation air duct of claim 1, which adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, is characterized in that: a rectifier module radiating fin (4) is arranged below the power unit (3), a cavity where the rectifier module radiating fin is located is communicated with the air distribution duct (11), and a rectifier module air suction opening (20) is formed in the position, corresponding to the cavity where the rectifier module radiating fin is located, of the rear partition plate (8).
3. The heat dissipation air duct of claim 1 or 2, which adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, is characterized in that: an air outlet duct (13) is connected to an air outlet of the heat dissipation fan (9), a rain shielding device (15) is arranged at an outlet of the air outlet duct, and a supporting vertical plate (16) for supporting the air outlet duct (13) is arranged on the outer side of the cabinet body (1).
4. The heat dissipation air duct of claim 3, which adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, is characterized in that: and a plurality of blades which swing along with the wind are uniformly arranged on the rain shielding device (15) at intervals and are used for preventing rain and snow from entering the air outlet duct (13).
5. The heat dissipation air duct of claim 1 or 2, which adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, is characterized in that: the air inlet duct (10) is internally provided with filter cotton (14), the filter cotton is fixed on a detachable filter cotton outer frame (23), and the filter cotton outer frame is fixedly connected with the cabinet body (1) through a fixing bolt (24).
6. The heat dissipation air duct of claim 3, which adopts a temperature-equalizing small-volume bidirectional converter with lower air inlet, characterized in that: and a blocking net for preventing flying insects and suspended matters in the air from entering is arranged in the air outlet duct (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211171467.3A CN115643721A (en) | 2022-09-26 | 2022-09-26 | Temperature-equalizing small-volume bidirectional converter with lower air inlet adopted in heat dissipation air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211171467.3A CN115643721A (en) | 2022-09-26 | 2022-09-26 | Temperature-equalizing small-volume bidirectional converter with lower air inlet adopted in heat dissipation air duct |
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| Publication Number | Publication Date |
|---|---|
| CN115643721A true CN115643721A (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211171467.3A Pending CN115643721A (en) | 2022-09-26 | 2022-09-26 | Temperature-equalizing small-volume bidirectional converter with lower air inlet adopted in heat dissipation air duct |
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| CN (1) | CN115643721A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203398979U (en) * | 2013-08-02 | 2014-01-15 | 广东明阳龙源电力电子有限公司 | Large-power wind power converter with high-efficiency air channel to radiate heat |
| CN106452106A (en) * | 2016-11-02 | 2017-02-22 | 中车青岛四方车辆研究所有限公司 | A current transformer heat radiation apparatus |
| CN209267423U (en) * | 2018-11-28 | 2019-08-16 | 中车大连电力牵引研发中心有限公司 | Traction convertor cabinet and rail vehicle |
| WO2021169042A1 (en) * | 2020-02-28 | 2021-09-02 | 中车青岛四方车辆研究所有限公司 | Inverter heat dissipation device, and control method and monitoring method therefor |
| CN217241215U (en) * | 2022-02-28 | 2022-08-19 | 厦门科华数能科技有限公司 | Energy storage converter cabinet compatible with wall-mounted energy storage box |
-
2022
- 2022-09-26 CN CN202211171467.3A patent/CN115643721A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203398979U (en) * | 2013-08-02 | 2014-01-15 | 广东明阳龙源电力电子有限公司 | Large-power wind power converter with high-efficiency air channel to radiate heat |
| CN106452106A (en) * | 2016-11-02 | 2017-02-22 | 中车青岛四方车辆研究所有限公司 | A current transformer heat radiation apparatus |
| CN209267423U (en) * | 2018-11-28 | 2019-08-16 | 中车大连电力牵引研发中心有限公司 | Traction convertor cabinet and rail vehicle |
| WO2021169042A1 (en) * | 2020-02-28 | 2021-09-02 | 中车青岛四方车辆研究所有限公司 | Inverter heat dissipation device, and control method and monitoring method therefor |
| CN217241215U (en) * | 2022-02-28 | 2022-08-19 | 厦门科华数能科技有限公司 | Energy storage converter cabinet compatible with wall-mounted energy storage box |
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