CN109862761B - High-voltage frequency converter - Google Patents
High-voltage frequency converter Download PDFInfo
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- CN109862761B CN109862761B CN201910242575.7A CN201910242575A CN109862761B CN 109862761 B CN109862761 B CN 109862761B CN 201910242575 A CN201910242575 A CN 201910242575A CN 109862761 B CN109862761 B CN 109862761B
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- Prior art keywords
- air
- fan
- cabinet
- heat
- frame
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- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000017525 heat dissipation Effects 0.000 claims abstract description 8
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a high-voltage frequency converter which comprises a cabinet body, a heat radiating device, a heating device and a second fan. The heat dissipation device is arranged on one side of the cabinet body. The heating device is arranged next to the heat dissipation device. The second fan is arranged on the side edge of the heating device. The second fan forms an internal circulation air flow which flows out of the second fan, passes through the heating device, and flows back to the second fan from the side edge of the middle frame after cold-heat exchange through the air-cooling heat exchanger during operation.
Description
Technical Field
The invention relates to the field of high-voltage frequency converters, in particular to an air-to-air cooling heat high-voltage frequency converter suitable for the open air.
Background
Because it is difficult to cool in an outdoor environment, there is no air-to-air cooling high-voltage inverter product suitable for the outdoor environment in the current market.
Disclosure of Invention
The invention provides a specially designed heat sink and a high-voltage frequency converter product adopting the heat sink, so that the heat sink is suitable for outdoor environment. On one hand, the invention improves the arrangement structure of the air-to-air cooling heat dissipation device so as to be suitable for the outdoor use of the high-voltage frequency converter. On the other hand, the invention improves the internal structure of the cabinet body of the high-voltage frequency converter, divides the whole set of system into external circulation which is directly contacted with external air and internal circulation which only dissipates heat in the system, and ensures that the whole set of high-voltage frequency converter operates in a closed environment like an indoor environment.
According to an aspect of the present invention, there is provided a heat dissipating device including:
the machine frame is provided with a middle frame, a top frame and an air inlet positioned at the bottom of the machine frame;
at least two air-cooling heat exchangers arranged on the middle frame of the rack, wherein two adjacent air-cooling heat exchangers are separated from each other to form a cavity;
the first fan is arranged on the top frame of the rack, and forms an external circulation airflow flowing in from the air inlet and flowing out from the side edge of the top frame after flowing through the air-to-air heat exchanger when in operation.
According to an embodiment of the present invention, in the above heat dissipating device, ventilation openings are formed on two opposite sides of the middle frame in the first horizontal direction.
According to an embodiment of the present invention, in the above heat dissipating device, an air outlet is formed on one side of the top frame along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction.
According to another aspect of the present invention, there is provided a high voltage frequency converter comprising:
a cabinet body;
the heat dissipation device as discussed above is disposed on one side of the cabinet;
the heating device is arranged next to the heat dissipation device;
the second fan is arranged at the side edge of the heating device,
and the second fan forms an internal circulation air flow which flows out of the second fan, passes through the heating device, exchanges cold and heat through the air-cooling heat exchanger and flows back to the second fan from the side edge of the middle frame when in operation.
According to an embodiment of the invention, in the high voltage frequency converter described above, the heat generating means is arranged adjacent to the cavity.
According to an embodiment of the present invention, in the high-voltage inverter, the second fan includes two centrifugal fans respectively disposed at opposite sides of the cabinet.
According to an embodiment of the present invention, in the high-voltage inverter, a circulating air flow loop formed by the internal circulating air flow circulates in an independent and airtight space in the cabinet.
According to an embodiment of the present invention, in the above high voltage inverter, an air outlet is provided on one side of the top frame, and the air outlet is provided on one side of the cabinet and faces the outside of the cabinet.
According to an embodiment of the present invention, in the high-voltage inverter, an air inlet at the bottom of the rack is disposed at the side of the cabinet and is in communication with the outside of the cabinet.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
In the accompanying drawings:
fig. 1 shows an embodiment of a heat sink according to the invention.
FIG. 2 illustrates one embodiment of an air-to-air heat exchanger in the heat sink shown in FIG. 1.
Fig. 3 shows an embodiment of a high voltage frequency converter according to the invention.
Reference numerals illustrate:
10. heat dissipation device
11. Rack
12. Air-to-air heat exchanger
111. Middle frame
112. Top frame
113. Air inlet
114. Vent opening
115. Air outlet
121. Cavity cavity
20. Cabinet body
30. Heating device
40. Second fan
Detailed Description
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Furthermore, although terms used in the present invention are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
In order to enable the high-voltage frequency converter to normally operate in an outdoor severe environment, it is necessary to ensure that the internal components of the high-voltage frequency converter have a dry, clean and proper-temperature environment. So in order to avoid the corrosion of the system inside by the external severe environment, the invention designs two relatively independent air channels: a separate closed internal air cooling duct and an open external air cooling duct. The two independent air channels are connected through an air-to-air heat exchanger. The internal independent closed internal circulation air duct is used for cooling heating components in the high-voltage frequency converter, and the external open external circulation air duct cools hot air in the internal independent internal circulation air duct through the connected air-cooling heat exchanger.
The basic principle and preferred embodiments of the present invention are discussed in more detail below with reference to the accompanying drawings. Fig. 1 shows an embodiment of a heat sink according to the invention. In the embodiment shown in fig. 1, the heat dissipating device 10 of the present invention mainly includes: a frame 11, an air-to-air heat exchanger 12 and a first fan.
The frame 11 has a middle frame 111, a top frame 112, and an air intake 113 at the bottom of the frame 11.
The air-to-air heat exchanger 12 has at least two, for example, two in the embodiment shown in fig. 1. The air-to-air heat exchangers 12 are disposed on the middle frame 111 of the rack 11, and two adjacent air-to-air heat exchangers 12 are spaced apart from each other to form a cavity 121, and the cavity 121 is adjacent to the heat source to facilitate the heat from the heat source.
Turning to fig. 2, one embodiment of an air-to-air heat exchanger 12 is shown. In this embodiment, both side surfaces of the air-to-air heat exchanger 12 are closed, and the remaining four surfaces are hollowed out to allow the air flow to pass through. In particular, according to the present invention, the inner circulating air flow in the high-voltage inverter flows through the air-to-air heat exchanger 12 in the horizontal direction (as indicated by arrow B in fig. 2), while the outer circulating air flow flows through the air-to-air heat exchanger 12 in the vertical direction (as indicated by arrow a in fig. 2) from bottom to top, so that the two air flows perform cold-heat exchange in the air-to-air heat exchanger 12, i.e., the inner circulating air flow is cooled by the outer circulating air flow in the air-to-air heat exchanger 12. The above-described internal and external circulating gas flows will be discussed in more detail below with respect to the high voltage inverter system of fig. 3.
The first fan is disposed on the top frame 112 of the rack 11. The first fan, when operated, creates an external circulating air flow from the air inlet 113, through the air-to-air heat exchanger 12, and out the sides of the top frame 112.
More specifically, in the embodiment shown in fig. 1, the middle frame 111 is provided with ventilation openings 114 on opposite sides in the first horizontal direction. The vents 114 allow the internal circulation air flow, which completes the heat exchange through the air-to-air heat exchanger 12, to be discharged from the vents 114 on both sides. In addition, an exhaust port 115 is opened at one side of the top frame 112 along a second horizontal direction perpendicular to the first horizontal direction. The exhaust port 115 allows the external circulation air flow, which completes the heat exchange of the cold and heat through the air-to-air heat exchanger 12, to be exhausted from the exhaust port 115 on one side to the outside of the high-voltage inverter.
According to the above-described structure, the external cool air is directly sucked from the lower side of the air-to-air heat exchanger 12 by the first fan of the external circulation, and is finally discharged outwardly by the first fan.
Fig. 3 is a top view of one embodiment of a high voltage inverter according to the present invention. The high-voltage frequency converter mainly comprises: the heat sink 10, the cabinet 20, the heat generating device 30, and the second fan 40.
The heat sink 10 is disposed at one side of the cabinet 20. As shown in the top view of fig. 3, the heat dissipating device 10 is disposed close to one side of the cabinet 20, such that the air outlet 115 of the top frame 112 is located at the one side of the cabinet 20 and faces the outside of the cabinet 20. The air inlet 113 at the bottom of the frame 11 is disposed at one side of the cabinet 20 (e.g., at the same side as the air outlet 115) and is in communication with the outside of the cabinet 20, so that the external air flow is introduced from the air inlet 113, and is discharged from the air outlet 115 after the cold-heat exchange of the air-to-air heat exchanger 12 is completed, thereby forming the above-mentioned external circulation air flow.
The heat generating device 30 is disposed immediately adjacent to the heat sink 10. For example, the heat generating device 30 may include internal components such as a system unit and/or a transformer in a high voltage inverter that are prone to generate heat. Preferably, the heat generating device 30 is disposed adjacent to the cavity 121, so as to allow the hot air generated by the heat generating device 30 to be directly introduced into the air-to-air heat exchanger 12 from the cavity 121 for heat exchange.
In addition, the second fan 40 is disposed at a side of the heat generating device 30. In the embodiment shown in fig. 3, the second fan 40 may be two centrifugal fans disposed on opposite sides of the cabinet 20, respectively.
The second fan 40 is operated to form an internal circulation air flow which flows out of the second fan 40, passes through the heat generating device 30, exchanges heat and cold via the air-to-air heat exchanger 12, and flows back to the second fan 40 from the side of the middle frame 111. The internal circulation airflow is driven by a second fan (for example, a centrifugal fan) 40, and a circulation airflow loop formed by the internal circulation airflow circulates in an independent and airtight space in the cabinet body 20, as shown by an arrow B in fig. 3, two parallel air paths are left and right, and the heated air is cooled by cold air passing through the heating device 30 and then passing through the air-cooling heat exchanger 12 built in the external circulation, so that an alternate circulation of cold air and hot air is formed. That is, the inner circulation air flow and the outer circulation air flow are operated independently of each other, and the heat exchange between them is completed only inside the air-to-air heat exchanger 12.
In summary, the design of the invention forms a relatively independent outer circulation air passage and an inner circulation air passage in the high-voltage frequency converter. The external circulation air passage is in direct contact with external air, and the internal circulation air passage only dissipates heat in the high-voltage frequency converter so as to isolate direct interaction between the high-voltage frequency converter and the external air environment. Therefore, the high-voltage frequency converter can be ensured to operate in a closed environment like an indoor environment, the internal environment is kept clean, and the situation that external dust and rainwater enter the cabinet body to cause corrosion or damage to the system is avoided.
It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (6)
1. The high-voltage frequency converter is characterized by comprising:
a cabinet (20);
the heat dissipation device (10) is arranged at one side of the cabinet body (20);
a heat generating device (30) disposed proximate to the heat sink (10);
a second fan (40) arranged at the side of the heating device (30),
the heat dissipation device (10) comprises a frame (11), at least two air-to-air heat exchangers (12) and a first fan; the frame (11) is provided with a middle frame (111), a top frame (112) and an air inlet (113) positioned at the bottom of the frame (11); the at least two air-to-air heat exchangers (12) are arranged on a middle frame (111) of the rack (11), and two adjacent air-to-air heat exchangers (12) are separated from each other to form a cavity (121); the first fan is arranged on a top frame (112) of the rack (11), and forms an external circulation air flow flowing in from the air inlet (113) and flowing out from the side edge of the top frame (112) after flowing through the air-to-air heat exchanger (12) when in operation;
the second fan (40) forms an internal circulation air flow which flows out of the second fan (40), passes through the heating device (30) and flows back to the second fan (40) from the side edge of the middle frame (111) after cold and heat exchange through the air-cooling heat exchanger (12) during operation.
2. The high voltage frequency converter according to claim 1, characterized in that the heat generating means (30) are arranged adjacent to the cavity (121).
3. The high voltage inverter according to claim 1, wherein the second fan (40) comprises two centrifugal fans arranged on opposite sides of the cabinet (20), respectively.
4. The high voltage inverter according to claim 1, characterized in that the circulating air circuit constituted by the internal circulating air circulates in a separate and airtight space inside the cabinet (20).
5. The high-voltage inverter according to claim 1, wherein an air outlet (115) is provided on one side of the top frame (112), and the air outlet (115) is provided on one side of the cabinet (20) and faces the outside of the cabinet (20).
6. The high-voltage inverter according to claim 5, characterized in that the air inlet (113) at the bottom of the frame (11) is arranged at the one side of the cabinet (20) and is in communication with the outside of the cabinet (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242575.7A CN109862761B (en) | 2019-03-28 | 2019-03-28 | High-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242575.7A CN109862761B (en) | 2019-03-28 | 2019-03-28 | High-voltage frequency converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109862761A CN109862761A (en) | 2019-06-07 |
| CN109862761B true CN109862761B (en) | 2024-03-15 |
Family
ID=66902230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910242575.7A Active CN109862761B (en) | 2019-03-28 | 2019-03-28 | High-voltage frequency converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN109862761B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649794B (en) * | 2019-10-15 | 2020-07-03 | 广州市伟达力电器有限公司 | High-voltage inverter power unit cabinet with self-circulation cold air device |
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| CN101299571A (en) * | 2008-03-14 | 2008-11-05 | 北京合康亿盛科技有限公司 | Circulation cold air apparatus for high voltage frequency conversion equipment |
| CN102523723A (en) * | 2011-12-01 | 2012-06-27 | 深圳市英威腾电气股份有限公司 | Radiating machine cabinet and electronic device |
| CN203537218U (en) * | 2013-09-27 | 2014-04-09 | 深圳市禾望电气有限公司 | Device for cooling current transformer |
| CN203869285U (en) * | 2014-04-25 | 2014-10-08 | 付仁杰 | Complete machine of radiator |
| CN107072119A (en) * | 2017-05-16 | 2017-08-18 | 北京智源新能电气科技有限公司 | A kind of rack for air-cooled convertor equipment |
| CN109413948A (en) * | 2018-11-14 | 2019-03-01 | 威创集团股份有限公司 | A kind of dust-proof, water-proof type radiating cabinet |
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| CN209930798U (en) * | 2019-03-28 | 2020-01-10 | 西门子（上海）电气传动设备有限公司 | Heat abstractor and high-voltage inverter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20120012286A1 (en) * | 2010-07-13 | 2012-01-19 | Alcatel-Lucent Usa Inc. | Air jet active heat sink apparatus |
| CN107171570A (en) * | 2017-06-05 | 2017-09-15 | 阳光电源股份有限公司 | A kind of inverter power cabinet |
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2019
- 2019-03-28 CN CN201910242575.7A patent/CN109862761B/en active Active
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| CN101299571A (en) * | 2008-03-14 | 2008-11-05 | 北京合康亿盛科技有限公司 | Circulation cold air apparatus for high voltage frequency conversion equipment |
| CN102523723A (en) * | 2011-12-01 | 2012-06-27 | 深圳市英威腾电气股份有限公司 | Radiating machine cabinet and electronic device |
| CN203537218U (en) * | 2013-09-27 | 2014-04-09 | 深圳市禾望电气有限公司 | Device for cooling current transformer |
| CN203869285U (en) * | 2014-04-25 | 2014-10-08 | 付仁杰 | Complete machine of radiator |
| CN107072119A (en) * | 2017-05-16 | 2017-08-18 | 北京智源新能电气科技有限公司 | A kind of rack for air-cooled convertor equipment |
| CN109413948A (en) * | 2018-11-14 | 2019-03-01 | 威创集团股份有限公司 | A kind of dust-proof, water-proof type radiating cabinet |
| CN109511246A (en) * | 2018-12-21 | 2019-03-22 | 北京中热信息科技有限公司 | A kind of heat pipe air conditioner formula indirect evaporation cooling system |
| CN209930798U (en) * | 2019-03-28 | 2020-01-10 | 西门子（上海）电气传动设备有限公司 | Heat abstractor and high-voltage inverter |
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| CN109862761A (en) | 2019-06-07 |
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| CP03 | Change of name, title or address |
Address after: 200137 No.460, Gaoxiang Ring Road, Gaodong Industrial Park, Pudong New Area, Shanghai Patentee after: Yinmengda (Shanghai) Electrical Transmission Equipment Co.,Ltd. Country or region after: China Address before: 200137 No.460, Gaoxiang Ring Road, Gaodong Industrial Park, Pudong New Area, Shanghai Patentee before: SIEMENS ELECTRICAL DRIVES (SHANGHAI) Ltd. Country or region before: China |
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