阅读说明：本技术 一种功率单元风冷散热系统 (Power unit air-cooled cooling system ) 是由 李滔 胡家喜 王婷 史虎 郭世慧 李勇 孙胜苗 黄华坤 黄敏 陈元初 于 2018-06-15 设计创作，主要内容包括：本发明提供一种功率单元风冷散热系统,包括依次连通的进风组件、散热组件及出风组件,所述散热组件至少为两组,多组所述散热组件沿水平方向并排布置,每组所述散热组件均包括至少两个散热器、风流收集区及散热风机,所述风流收集区设于散热器与散热风机之间；各组所述散热风机根据对应功率单元的散热损耗及系统流阻进行设置,相邻所述散热组件的风流收集区之间设有防止相邻散热风机相互干扰抢风的隔板。本发明具有防止散热风机相互抢风干扰,保证功率单元散热效果等优点。(The invention provides a power unit air-cooling heat dissipation system which comprises an air inlet assembly, heat dissipation assemblies and an air outlet assembly which are sequentially communicated, wherein the number of the heat dissipation assemblies is at least two, a plurality of groups of the heat dissipation assemblies are arranged side by side along the horizontal direction, each group of the heat dissipation assemblies comprises at least two radiators, an air flow collecting region and a heat dissipation fan, and the air flow collecting region is arranged between the radiators and the heat dissipation fan; each group of the heat dissipation fans are arranged according to the heat dissipation loss and the system flow resistance of the corresponding power unit, and a partition plate for preventing the adjacent heat dissipation fans from interfering with each other and robbing air is arranged between the air flow collecting regions of the adjacent heat dissipation assemblies. The invention has the advantages of preventing the mutual interference of the heat radiation fans, ensuring the heat radiation effect of the power unit, and the like.)

1. A power unit air-cooling heat dissipation system comprises an air inlet assembly, heat dissipation assemblies and an air outlet assembly which are sequentially communicated, and is characterized in that the number of the heat dissipation assemblies is at least two, a plurality of groups of the heat dissipation assemblies are arranged side by side along the horizontal direction, each group of the heat dissipation assemblies comprises at least two radiators, an air flow collecting region and a heat dissipation fan, and the air flow collecting region is arranged between the radiators and the heat dissipation fan; each group of the heat dissipation fans are arranged according to the heat dissipation loss and the system flow resistance of the corresponding power unit, and a partition plate for preventing the adjacent heat dissipation fans from interfering with each other and robbing air is arranged between the air flow collecting regions of the adjacent heat dissipation assemblies.

2. The power unit air-cooled heat dissipation system of claim 1, wherein the heat dissipation fan is disposed in the middle of the airflow collection area; the radiators are arranged side by side along the length direction of the air flow collecting area and are arranged corresponding to the cooling fan.

3. The power unit air-cooled heat dissipation system of claim 2, wherein the air outlet of each heat sink is located within the airflow collection region.

4. The power unit air-cooled heat dissipation system of any one of claims 1-3, wherein the power unit comprises a temperature sensitive device and an IGBT module, the temperature sensitive device is arranged between the air intake assembly and the heat sink, and the IGBT module is arranged on the heat dissipation surface of the heat sink.

5. The power unit air-cooled heat dissipation system of any one of claims 1-3, wherein the air intake assembly comprises an air intake mixed flow region and an air intake communication region in communication with outside air, the air intake mixed flow region being disposed between the air intake communication region and the heat sink.

6. The power unit air-cooled heat dissipation system of claim 5, wherein the total horizontal projection area of the multiple sets of heat dissipation assembly heat sinks is located within the mixed air intake flow region.

7. The power unit air-cooled heat dissipation system of claim 6, wherein the inlet airflow mixing region comprises a plurality of flow splitting sections, and the number of the flow splitting sections is the same as that of the heat dissipation assemblies and is arranged in a one-to-one correspondence.

8. The system according to claim 5, wherein the air intake communication area includes a dustproof filter member and a communication portion communicating with the outside air, and the dustproof filter member is disposed at the communication portion.

9. The power unit air-cooled heat dissipation system of claim 5, further comprising a heat dissipation cabinet, wherein the intake air mixing area is enclosed by a U-shaped protection plate and a cabinet door of the heat dissipation cabinet; the air inlet communicating area is arranged at the middle lower part of the heat dissipation cabinet body and is communicated with the bottom surface and/or the side surface of the air inlet mixed flow area.

10. The power unit air-cooled heat dissipation system of claim 9, wherein the air outlet assembly comprises an upward flow guiding channel and an air outlet communicating region communicating with outside air, the upward flow guiding channel is disposed at an upper portion of the heat dissipation cabinet, and the air outlet communicating region is disposed at an end of the upward flow guiding channel away from the heat dissipation cabinet.

Technical Field

The invention relates to the field of power unit heat dissipation, in particular to a power unit air-cooled heat dissipation system.

Background

In a variable-current power unit, an IGBT power semiconductor device is usually used for energy conversion, and an IGBT can generate a large amount of heat loss in the working process, so that the IGBT is usually fixed on a radiator for forced air cooling heat dissipation to ensure that the IGBT does not exceed the temperature, and the equipment is ensured to run stably and reliably for a long time. The existing air duct of the IGBT radiator generally has two air inlet and outlet modes:

the fins of the radiator (I) run horizontally and correspond to the front and back air inlet and outlet modes. This kind of mode equipment cabinet body degree of depth size is big, arranges inside circular tower section of thick bamboo to wind power industry radiator, because circular tower section of thick bamboo horizontal space is limited, need arrange radiator fan in the external portion of cabinet, the external mode of fan has following shortcoming: 1. the external fan has potential safety hazard, and the overall protection level is not high; 2. the front and back air inlet and outlet modes are not beneficial to natural rise of hot air, and the heat dissipation effect is limited; 3. the depth of the whole cabinet is large, and particularly when the whole cabinet is arranged in a tower drum in the wind power industry, the whole cabinet occupies the maintenance space at the rear part of the cabinet body; 4. the whole appearance is irregular and neat and the aesthetic property is poor.

And (II) the radiator fins are vertically arranged and correspond to an up-down air inlet and outlet mode. Compared with the front and back air inlet and outlet mode, the mode has the advantages of small potential safety hazard, contribution to natural rising of hot air, large maintenance space and good attractiveness. Because the loss of the IGBTs on the radiators corresponding to the fans is different, the fan models correspondingly configured by the IGBTs are also different under normal conditions, but the existing arrangement mode easily causes the fans to interfere with each other and rush wind, affects the performance of the fans, causes poor heat dissipation uniformity among the radiators, and finally affects the heat dissipation effect of the power unit.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the power unit air-cooled heat dissipation system which prevents the mutual air-robbing interference of the heat dissipation fans and ensures the heat dissipation effect of the power unit.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a power unit air-cooling heat dissipation system comprises an air inlet assembly, heat dissipation assemblies and an air outlet assembly which are sequentially communicated, wherein at least two groups of heat dissipation assemblies are arranged, a plurality of groups of heat dissipation assemblies are arranged side by side along the horizontal direction, each group of heat dissipation assemblies comprises at least two radiators, an air flow collecting region and a heat dissipation fan, and the air flow collecting region is arranged between the radiators and the heat dissipation fan; each group of the heat dissipation fans are arranged according to the heat dissipation loss and the system flow resistance of the corresponding power unit, and a partition plate for preventing the adjacent heat dissipation fans from interfering with each other and robbing air is arranged between the air flow collecting regions of the adjacent heat dissipation assemblies.

As a further improvement of the above technical solution:

the heat dissipation fan is arranged in the middle of the air flow collecting area; the radiators are arranged side by side along the length direction of the air flow collecting area and are arranged corresponding to the cooling fan.

And the air outlet of each radiator is positioned in the air flow collecting area.

The power unit comprises a temperature sensitive device and an IGBT module, the temperature sensitive device is arranged between the air inlet assembly and the radiator, and the IGBT module is arranged on the radiating surface of the radiator.

The air inlet subassembly includes the air inlet mixed flow district and the air inlet intercommunication district with outside air intercommunication, the air inlet mixed flow district is located between air inlet intercommunication district and the radiator.

The total horizontal projection area of the multiple groups of the heat dissipation assembly radiators is positioned in the air inlet mixed flow area.

The air inlet mixed flow area comprises a plurality of shunting sections, and the number of the shunting sections is the same as that of the heat dissipation assemblies and is arranged in a one-to-one correspondence manner.

The air inlet communicating area and the air outlet communicating area comprise dustproof filtering pieces and communicating parts communicated with external air, and the dustproof filtering pieces are arranged at the communicating parts.

The power unit air-cooled heat dissipation system also comprises a heat dissipation cabinet body, wherein the air inlet mixed flow area is formed by enclosing a U-shaped protection plate and a cabinet door of the heat dissipation cabinet body; the air inlet communicating area is arranged at the middle lower part of the heat dissipation cabinet body and is communicated with the bottom surface and/or the side surface of the air inlet mixed flow area.

The air outlet assembly comprises an upward flow guide channel and an air outlet communicating area communicated with external air, the upward flow guide channel is arranged at the upper part of the heat dissipation cabinet body, and the air outlet communicating area is arranged at one end, far away from the heat dissipation cabinet body, of the upward flow guide channel.

Compared with the prior art, the invention has the advantages that:

the heat dissipation assemblies are arranged into at least two groups, a plurality of groups of heat dissipation assemblies are arranged side by side along the horizontal direction, each group of heat dissipation assemblies comprises at least two radiators, an air flow collecting region and a heat dissipation fan, the air flow collecting region is arranged between the radiators and the heat dissipation fan, so that the heat dissipation fan can dissipate heat of the radiators, and the air flow collecting region ensures uniform heat dissipation among the radiators; each group of cooling fans are arranged according to the cooling loss and the system flow resistance of the corresponding power unit, a partition plate is arranged between the air flow collecting regions of the adjacent cooling assemblies, and air inlets of the plurality of cooling fans are separated independently, so that the mutual air robbing interference between the adjacent cooling fans is effectively prevented, the cooling effect of the radiator on the corresponding power unit is ensured, and the power unit is high in working reliability and long in service life.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 is a front view of the power unit air-cooled heat dissipation system of the present invention.

Fig. 2 is a schematic view of the position relationship between the air intake assembly and the heat dissipation cabinet of the present invention.

Fig. 3 is a schematic view of a position relationship between the air outlet assembly and the heat dissipating cabinet according to the present invention.

The reference numerals in the figures denote:

1. an air intake assembly; 11. an air inlet mixed flow area; 12. an air intake communicating region; 2. a heat dissipating component; 21. a heat sink; 22. a wind flow collecting region; 221. a partition plate; 23. a heat radiation fan; 3. an air outlet assembly; 31. an upper flow guide channel; 32. an air outlet communicating region; 4. a temperature sensitive device; 5. a communicating portion; 6. a heat dissipation cabinet body.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples, without thereby limiting the scope of the invention.

As shown in fig. 1, the power unit air-cooled heat dissipation system of the present embodiment includes an air intake assembly 1, a heat dissipation assembly 2, and an air outlet assembly 3. Wherein, air inlet subassembly 1, radiator unit 2 and air-out subassembly 3 communicate the setting in proper order, and outside cold wind is from the lower part through air inlet subassembly 1, radiator unit 2 and air-out subassembly 3 in proper order with power unit's heat discharge. The invention utilizes the air rising principle to facilitate the acceleration of the flow of internal air and improve the heat dissipation effect of the power unit.

In this embodiment, there are at least two groups of heat dissipation assemblies 2, and a plurality of groups of heat dissipation assemblies 2 are arranged side by side along the horizontal direction; each set of heat dissipation assemblies 2 comprises at least two heat sinks 21, an airflow collection area 22 and a heat dissipation fan 23. Wherein, the wind current collecting region 22 is arranged between the radiator 21 and the heat dissipation fan 23, the design of the wind current collecting region 22 can increase the air draft surface of the heat dissipation fan 23, and the effective heat dissipation of a plurality of radiators 21 and the heat dissipation uniformity of each radiator in the heat dissipation assembly 2 are ensured, thereby avoiding the problem that the cost of the heat dissipation fan 23 is high when a single radiator 21 is independently equipped. Each group of the heat dissipation fans 23 is arranged according to the heat dissipation loss and the system flow resistance of the corresponding power unit, and the partition plates 221 are arranged between the air flow collecting regions 22 of the adjacent heat dissipation assemblies 2, so that the air inlets of the plurality of the heat dissipation fans 23 are separated independently, the occurrence of mutual air robbing interference between the adjacent heat dissipation fans 23 is effectively prevented, the heat dissipation effect of the heat dissipater 21 on the corresponding power unit is ensured, and the power unit has high working reliability and long service life.

Further, the radiator fan 23 is arranged in the middle of the air flow collecting area 22, the number of the radiators 21 of each group of radiator assemblies 2 is three, the three radiators 21 are arranged side by side along the length direction of the air flow collecting area 22, and the three radiators 21 and the radiator fan 23 are correspondingly arranged. The air quantity among the radiators 21 is uniform, and the heat dissipation effect of the power unit is ensured. Meanwhile, the air outlet of each radiator 21 is positioned in the air flow collecting region 22, which ensures that the air quantity passes through the middle of the radiator 21, and the air leakage is not generated at the interface of each radiator 21 and the air flow collecting region 22, thereby realizing the full utilization of the cooling air quantity. In other embodiments, the heat sinks 21 may be provided in two, four, five, etc.

Further, the length of the airflow collecting region 22 in this embodiment needs to be matched with the size of the heat dissipation fan 23, and the length of the airflow collecting region 22 is not less than the radius of the impeller of the heat dissipation fan 23, so as to ensure uniform air volume among the heat dissipators 21 and ensure effective heat dissipation of the power unit.

As shown in fig. 1, the power unit includes a temperature sensitive device 4 and an IGBT module. The temperature sensitive device 4 is arranged between the air inlet component 1 and the radiator 21, and the IGBT module is arranged on the heat dissipation surface of the radiator 21. Namely, the temperature sensitive device 4 (such as a capacitor and the like) in the power unit is arranged close to the air inlet component 1, so that the temperature sensitive device 4 is cooled when the air inlet temperature is the lowest, the layout structure is compact, the occupied space is small, and the operation reliability is high.

Further, the air intake component 1 comprises an air intake mixed flow area 11 and an air intake communicating area 12. The air inlet mixed flow area 11 is arranged between the air inlet communicating area 12 and the radiator 21, and the temperature sensitive device 4 is arranged between the air inlet mixed flow area 11 and the radiator 21. The air inlet mixed flow area 11 forms an air inlet buffering area, avoids the phenomenon that dust is easy to block due to different air speeds of inlet air and too fast air speed, and reduces the maintenance cost and the maintenance time. The intake communicating region 12 communicates with the outside air, and the outside air is sucked into the intake mixed flow region 11. In other embodiments, the air intake assembly 1 may also only include the air intake communication area 12, and the air intake communication area 12 is directly communicated with the bottom of the heat sink 21.

In this embodiment, the total horizontal projection area of the radiators 21 of the multiple sets of heat dissipation assemblies 2 is located in the mixed air intake flow region 11. So as to ensure that each group of radiators 21 can directly and correspondingly receive the cold air in the air inlet mixed flow area 11, and further ensure the heat dissipation effect of the radiators 21. In other embodiments, the intake mixed flow region 11 may also include a plurality of flow dividing sections, the number of the flow dividing sections is the same as the number of the heat dissipation assemblies 2, the flow dividing sections and the heat dissipation assemblies 2 are arranged in a one-to-one correspondence manner, and the form of the split correspondence ensures the heat dissipation effect of the heat sink 21.

Further, the air intake communication area 12 of the present embodiment includes a dustproof filter member and a communication portion 5. The communicating part 5 is communicated with the outside air, and is in the form of a plurality of communicating holes or louvers arranged in an array; the dustproof filter piece is arranged at the position of the communicating part 5 to filter impurities, so that dust and dust are prevented from entering the inside of the heat dissipation cabinet body 6, and the maintenance period is prolonged under the application occasions of the dust and sand. In this embodiment, the dustproof filter member is filter cotton.

As shown in fig. 2, in this embodiment, the power unit air-cooled heat dissipation system further includes a heat dissipation cabinet 6. The air inlet mixed flow area 11 is formed by enclosing a U-shaped protection plate and a cabinet door of the heat dissipation cabinet body 6. The air inlet communicating zone 12 is arranged at the middle lower part of the heat dissipation cabinet body 6, the air inlet communicating zone 12 is communicated with the bottom surface and the side surface of the air inlet mixed flow zone 11, wherein the air inlet positioned at the side surface of the air inlet mixed flow zone 11 can directly dissipate heat of the temperature sensitive device 4 and enters the heat radiator 21; the inlet air at the bottom of the inlet air mixed flow zone 11 can radiate the temperature sensitive device 4 through the inlet air mixed flow zone 11 and enter the radiator 21. The air inlet area of the air inlet component 1 is expanded, and the heat dissipation effect of the power unit is further improved. In other embodiments, the intake communicating region 12 may also communicate with the bottom surface or the side surface of the intake mixed flow region 11.

Further, as shown in fig. 3, the air outlet assembly 3 includes an upward guiding channel 31 and an air outlet communicating region 32. The upward flow guide channel 31 is arranged at the upper part of the heat dissipation cabinet body 6, and when the power unit air-cooled heat dissipation system is applied to the wind power generation circular tower, the upward flow guide channel 31 can guide and discharge hot air discharged by the heat dissipation fan 23 upwards, so that the possibility that the hot air flows back to the air inlet component 1 at the bottom of the heat dissipation cabinet body 6 when the discharged hot air is horizontal or downward is avoided, and the protection grade of the power unit air-cooled heat dissipation system is improved; the air outlet communicating region 32 is disposed at one end of the upward flow guiding channel 31 far away from the heat dissipating cabinet 6, and is communicated with the outside air.

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.