CN214797389U - Liquid cooling radiator with high radiating efficiency - Google Patents
Liquid cooling radiator with high radiating efficiency Download PDFInfo
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- CN214797389U CN214797389U CN202121154467.3U CN202121154467U CN214797389U CN 214797389 U CN214797389 U CN 214797389U CN 202121154467 U CN202121154467 U CN 202121154467U CN 214797389 U CN214797389 U CN 214797389U
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Abstract
The utility model discloses a high radiating efficiency's liquid cooling radiator, including inlet, liquid outlet and a plurality of runner group, it is a plurality of runner group parallel connection is in the same place, runner group includes a plurality of series connection's subchannel together, runner group has the feed liquor end and goes out the liquid end, the feed liquor end with the inlet intercommunication is in the same place, go out the liquid end with the liquid outlet intercommunication is in the same place. The liquid cooling radiator with high heat dissipation efficiency integrates the characteristics of parallel and series runners, a plurality of sub-runners are grouped, and a plurality of sub-runners included in each runner group are connected in series, so that the flow rate of liquid in the runner group is ensured to be consistent; then, all the flow channel groups are connected in parallel, so that the pressure loss of the whole liquid cooling radiator is reduced, the flow is improved, and the heat dissipation efficiency of the whole liquid cooling radiator is finally improved.
Description
Technical Field
The utility model belongs to the radiator field, concretely relates to liquid cooling radiator of high radiating efficiency.
Background
With the development of the power electronics industry, the IGBT heat dissipation design of the power unit at the core becomes more and more important, and the performance and density of the product are directly determined. Nowadays, both power electronic products and electric vehicle control units have higher and higher requirements on power density, so that the requirements on IGBT heat dissipation design are higher and higher.
Among the heat dissipation modes for the IGBT, liquid cooling heat dissipation is the most effective. With the increasing of the heat dissipation power of the IGBT and the higher and higher requirements on the power density of products, the development of the high-efficiency liquid cooling radiator of the IGBT is particularly important. The traditional liquid cooling radiator is difficult to meet under the current high power and high power density, and is mainly embodied in the following aspects:
(1) in the traditional liquid cooling radiator scheme, a plurality of branches of parallel flow channels are adopted, heat exchange is realized through a large flow channel and a large flow, a larger heat exchange area and a larger flow rate are needed to meet the heat dissipation requirement, and cost is finally sacrificed;
(2) the traditional liquid cooling radiator has simple water channel design, usually has no turbulent flow design, and has low heat exchange efficiency;
(3) traditional liquid cooling radiator adopts drilling usually, and the runner transition quarter turn is more, and the flow resistance is relatively big.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a high radiating efficiency's liquid cooling radiator of radiating efficiency height, with low costs.
In order to solve the technical problem, the utility model provides a technical scheme does:
the utility model provides a high radiating efficiency's liquid cooling radiator, includes inlet, liquid outlet and a plurality of runner group, and is a plurality of runner group parallel connection is in the same place, runner group includes a plurality of series connection's subchannel together, runner group has the feed liquor end and goes out the liquid end, the feed liquor end with the inlet intercommunication is in the same place, go out the liquid end with the liquid outlet intercommunication is in the same place.
Furthermore, the liquid inlet device also comprises a first confluence flow channel, wherein one end of the first confluence flow channel is connected with the liquid inlet, and the other end of the first confluence flow channel is connected with the liquid inlet end of the flow channel group.
And one end of the second confluence flow channel is connected with the liquid outlet, and the other end of the second confluence flow channel is connected with the liquid outlet end of the flow channel group.
Furthermore, a plurality of sub-runners connected together in parallel are arranged in the sub-runners.
Further, the number of the sub-runners in each sub-runner is six.
Further, each of the flow passage groups includes 2 or 3 of the branch passages.
Further, the device comprises a main body, and the flow channel group is arranged on the main body.
Further, the installation position of the heating body corresponds to the flow channel group.
The utility model has the advantages that:
the liquid cooling radiator with high heat dissipation efficiency integrates the characteristics of parallel and series runners, a plurality of sub-runners are grouped, and a plurality of sub-runners included in each runner group are connected in series, so that the flow rate of liquid in the runner group is ensured to be consistent; then, all the flow channel groups are connected in parallel, so that the pressure loss of the whole liquid cooling radiator is reduced, the flow is improved, and the heat dissipation efficiency of the whole liquid cooling radiator is finally improved.
Drawings
FIG. 1 is a front view of a liquid-cooled heat sink of the present invention in a preferred embodiment;
fig. 2 is a schematic perspective view of a liquid cooling radiator and a heating element with high heat dissipation efficiency according to a preferred embodiment of the present invention;
fig. 3 is a schematic view showing a flow velocity distribution of the parallel flow channel radiator in comparative example 1;
fig. 4 is a schematic view of the temperature distribution of the parallel flow channel radiator in comparative example 1;
fig. 5 is a schematic view showing a flow velocity distribution of the series flow-path radiator in comparative example 2;
fig. 6 is a schematic view of the temperature distribution of the series flow-channel radiator in comparative example 2.
The reference numerals include:
110-first confluence channel 120-second confluence channel 200-channel group
210-branch channel 220-sub-channel 300-liquid inlet
400-liquid outlet 500-main body 600-heating element
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example 1
Referring to fig. 1 and 2, in order to achieve the above objects, according to a preferred embodiment of the present invention, the liquid cooling radiator with high heat dissipation efficiency includes a liquid inlet 300, a liquid outlet 400 and a plurality of flow channel sets 200, wherein the flow channel sets 200 are connected in parallel, the flow channel sets 200 include a plurality of branch flow channels 210 connected in series, the flow channel sets 200 have a liquid inlet end and a liquid outlet end, the liquid inlet end is communicated with the liquid inlet 300, and the liquid outlet end is communicated with the liquid outlet 400.
In the prior art, a liquid cooling radiator usually adopts multi-channel parallel connection or series connection to realize heat exchange, the radiator with the parallel flow channels usually has small pressure loss under the same condition, and large flow is needed to improve the flow speed for quickly carrying out heat exchange; at the same flow rate, the pressure loss of the series flow channel radiator is quite high, and a larger circulating pump is needed to ensure the flow rate. The liquid cooling radiator with high heat dissipation efficiency integrates the characteristics of parallel and series flow channels, a plurality of sub-flow channels 210 are grouped, and a plurality of sub-flow channels 210 included in each flow channel group 200 are connected in series, so that the flow rate of liquid in the flow channel group 200 is ensured to be consistent; then, the flow channel groups 200 are connected in parallel, so that the pressure loss of the whole liquid cooling radiator is reduced, the flow is improved, and the heat dissipation efficiency of the whole liquid cooling radiator is finally improved. The above components are described in further detail below.
As shown in fig. 1, the liquid-cooled heat sink with high heat dissipation efficiency includes a main body 500, a liquid inlet 300, a liquid outlet 400, and a flow channel set 200. The installation position of the heating element 600 corresponds to the flow path group 200. The heating element 600 may be an IGBT.
The main body 500 is provided with a liquid inlet 300 for introducing liquid into the flow channel set 200 and a liquid outlet 400 for discharging liquid from the flow channel set 200. The main body 500 is further provided with a plurality of runner groups 200, and the runner groups 200 are connected in parallel. The flow channel set 200 has a liquid inlet end and a liquid outlet end, the liquid inlet end is communicated with the liquid inlet 300, and the liquid outlet end is communicated with the liquid outlet 400. The liquid with lower temperature flows into the flow channel set 200 from the liquid inlet 300 through the liquid inlet end of the flow channel set 200, exchanges heat with the heating element 600 in the flow channel set 200, and then flows out of the liquid cooling radiator with high heat dissipation efficiency through the liquid outlet end of the flow channel set 200 and the liquid outlet 400 in sequence, so that heat generated by the heating element 600 is taken away.
The flow channel assembly 200 includes a plurality of sub-flow channels 210 connected in series to ensure a uniform flow rate of the liquid in the flow channel assembly 200. Preferably, each of the flow channel groups 200 includes 2 or 3 of the branch channels 210. Specifically, the installation positions of the plurality of heat generators 600 correspond to the plurality of branch flow paths 210 one to one.
In order to make the flow pattern of the liquid more uniform, in the preferred embodiment of the present application, a plurality of sub-flow channels 220 connected together in parallel are provided in the sub-flow channel 210. Preferably, the number of the sub-flow channels 220 in each of the sub-flow channels 210 is six.
In the preferred embodiment of the present application, the liquid-cooled heat sink with high heat dissipation efficiency further includes a first bus flow channel 110 and a second bus flow channel 120. One end of the first confluence flow channel 110 is connected to the liquid inlet 300, the other end is connected to the liquid inlet of the flow channel set 200, and the liquid with lower temperature flows into the flow channel set 200 through the liquid inlet 300 and the first confluence flow channel 110 in sequence; one end of the second confluence flow channel 120 is connected with the liquid outlet 400, the other end of the second confluence flow channel is connected with the liquid outlet end of the flow channel set 200, and liquid with higher temperature flows out of the liquid cooling radiator with high heat dissipation efficiency through the second confluence flow channel 120 and the liquid outlet 400 in sequence.
The liquid cooling radiator with high heat dissipation efficiency can be used for arranging the heating elements 600 on a single side or double sides, the number of the runner groups 200 can be set according to the number of the heating elements 600, and the size of the sub-runners 210 can be adjusted according to loss and flow, so that a high-power and high-density power scheme is realized.
Comparative example 1
In this comparative example, the parallel flow channel radiator employs parallel flow channels to achieve heat exchange. The formula Q ═ ρ.v.cp. Δ t (Q: total heat dissipation power of the IGBT on the radiator, ρ: liquid density, V: liquid flow rate, Cp: specific heat capacity, Δ t: inlet and outlet temperature rise) can be obtained, the heat dissipation power is proportional to the liquid flow rate, and this parallel flow channel radiator needs a larger circulation pump to provide large-flow heat dissipation, that is, the heat dissipation efficiency per unit flow is not high.
The pressure loss of the parallel flow channel radiator is relatively low as a whole at the same flow rate, and the flow rate is gradually reduced as more parallel flow is performed, so that the temperature of the heat-generating body 600 is also gradually increased, as shown in fig. 3 and 4.
Comparative example 2
In this comparative example, the series flow channel radiator employs a series flow channel to achieve heat exchange. Under the same conditions, the series flow channel radiator is often large in pressure loss, but the heat also needs enough flow to exchange heat, so that a larger circulating pump is needed to overcome the pressure loss of the radiator, and finally the volume and the cost of a circulating system are increased, as shown in fig. 5 and 6.
The following can be obtained by the comparative analysis of the parallel flow channel radiator and the series flow channel radiator under the same condition:
1. the parallel flow channels can reduce pressure loss, more flow can be obtained by the same external circulation, but the more parallel flow, the more flow speed reduction, the uneven temperature distribution can be caused.
2. The pressure loss is increased due to the series flow channels, the flow obtained by the same external circulation is smaller, and the water temperature of the flow channels is correspondingly increased when the flow channels are connected in series; but the flow rate consistency of the series flow channels is good.
The heat dissipation effects of the examples are compared with those of comparative examples 1 and 2 under the same conditions as follows:
| comparative example 1 | Comparative example 2 | Examples | |
| Temperature of heating body | 107-173℃ | 99.5～111 |
101～104℃ |
| Pressure loss | 0.07bar | 0.6bar | 0.13bar |
| Flow rate of flow | 0.147～1.58m/s | 1.33～3.05m/s | 1.28～1.5m/s |
The comparison can know that the advantage of parallelly connected and series connection runner has been synthesized to the high radiating efficiency's of this embodiment liquid cooling radiator, and the flow rate of liquid is unanimous in runner group 200, and the pressure loss is lower, and the flow is great, has promoted the radiating efficiency of whole liquid cooling radiator.
The above description is only a preferred embodiment of the present invention, and many changes can be made in the detailed description and the application scope according to the idea of the present invention for those skilled in the art, which all belong to the protection scope of the present invention as long as the changes do not depart from the concept of the present invention.
Claims (8)
1. The utility model provides a high radiating efficiency's liquid cooling radiator, its characterized in that includes inlet (300), liquid outlet (400) and a plurality of runner group (200), and is a plurality of runner group (200) parallel connection is in the same place, runner group (200) include a plurality of series connection branch runner (210) in the same place, runner group (200) have the feed liquor end and go out the liquid end, the feed liquor end with inlet (300) intercommunication is in the same place, go out the liquid end with liquid outlet (400) intercommunication is in the same place.
2. The liquid-cooled heat sink with high heat dissipation efficiency as recited in claim 1, further comprising a first collecting flow channel (110), wherein one end of the first collecting flow channel (110) is connected to the liquid inlet (300), and the other end is connected to the liquid inlet of the flow channel set (200).
3. The liquid-cooled heat sink with high heat dissipation efficiency as recited in claim 1, further comprising a second converging flow channel (120), wherein one end of the second converging flow channel (120) is connected to the liquid outlet (400), and the other end is connected to the liquid outlet of the flow channel set (200).
4. A liquid-cooled heat sink with high heat dissipation efficiency as claimed in any one of claims 1-3, wherein the sub-channels (220) are connected in parallel in the sub-channels (210).
5. The liquid-cooled heat sink with high heat dissipation efficiency as recited in claim 4, wherein the number of said sub-flow channels (220) in each of said sub-flow channels (210) is six.
6. The liquid-cooled heat sink with high heat dissipation efficiency as recited in claim 1, wherein each of said flow channel sets (200) includes 2 or 3 of said sub-flow channels (210).
7. The liquid-cooled heat sink with high heat dissipation efficiency as recited in claim 1, further comprising a main body (500), wherein the flow channel set (200) is provided on the main body (500).
8. A liquid-cooled radiator with high heat dissipation efficiency as claimed in any one of claims 1-3, wherein the heating element (600) is installed at a position corresponding to the flow channel set (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154467.3U CN214797389U (en) | 2021-05-26 | 2021-05-26 | Liquid cooling radiator with high radiating efficiency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121154467.3U CN214797389U (en) | 2021-05-26 | 2021-05-26 | Liquid cooling radiator with high radiating efficiency |
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| CN214797389U true CN214797389U (en) | 2021-11-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113710062A (en) * | 2021-08-24 | 2021-11-26 | 电子科技大学 | Multi-structure combined type special-shaped micro-rib liquid cooling heat dissipation and temperature equalization device |
| WO2024104319A1 (en) * | 2022-11-16 | 2024-05-23 | 比亚迪股份有限公司 | Cooling structure of cooler, cooler, battery pack and vehicle |
-
2021
- 2021-05-26 CN CN202121154467.3U patent/CN214797389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113710062A (en) * | 2021-08-24 | 2021-11-26 | 电子科技大学 | Multi-structure combined type special-shaped micro-rib liquid cooling heat dissipation and temperature equalization device |
| WO2024104319A1 (en) * | 2022-11-16 | 2024-05-23 | 比亚迪股份有限公司 | Cooling structure of cooler, cooler, battery pack and vehicle |
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Effective date of registration: 20220210 Address after: 710000 room 804, 8th floor, building 14, West Yungu phase I, Fengxi new town, Xixian new area, Xi'an, Shaanxi Patentee after: Weidi new energy Co.,Ltd. Address before: 518055 B2, Nanshan Zhiyuan, 1001 Nanshan District Xue Yuan Avenue, Shenzhen, Guangdong. Patentee before: VERTIV TECH Co.,Ltd. |