CN116960083A - Multichannel radiator with coolant distributor - Google Patents

Multichannel radiator with coolant distributor Download PDF

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Publication number
CN116960083A
CN116960083A CN202310825437.8A CN202310825437A CN116960083A CN 116960083 A CN116960083 A CN 116960083A CN 202310825437 A CN202310825437 A CN 202310825437A CN 116960083 A CN116960083 A CN 116960083A
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CN
China
Prior art keywords
distributor
sub
radiator
channels
runners
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310825437.8A
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Chinese (zh)
Inventor
陈文炯
门志超
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Dalian University of Technology
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Dalian University of Technology
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Publication date
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Priority to CN202310825437.8A priority Critical patent/CN116960083A/en
Publication of CN116960083A publication Critical patent/CN116960083A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention discloses a multichannel radiator with a cooling liquid distributor, belongs to the technical field of local heat exchange with high heat flux density, and solves the problem that the heat radiation performance is affected due to unreasonable distribution of cooling liquid among all flow channels of the multichannel radiator. The distributor A and the distributor are obtained by a variable density topology optimization method, and the average temperature is the minimum as an optimization target under constant pressure drop. The distributor A is connected with the inlet and the multiple channels, so that reasonable distribution of the cooling liquid is realized. The distributor B is connected with the multiple channels and the outlet to collect the cooling liquid. The invention realizes reasonable distribution of the cooling liquid of the multi-channel radiator through the distributor, enhances the performance of the multi-channel radiator, reduces the number of inlets and outlets of the multi-channel radiator, and avoids the problems of tightness and pipeline complexity caused by excessive number of inlets and outlets.

Description

Multichannel radiator with coolant distributor
Technical Field
The invention relates to the technical field of high heat flux local heat exchange, in particular to a multichannel radiator with a cooling liquid distributor.
Background
In the technical field of the current high heat flux local heat exchange, the multichannel radiator is widely applied in terms of the advantages of high heat exchange performance, high cost performance and the like. However, the multi-channel radiator has a very large number of inlet and outlet pipes, which is very inconvenient for the closure of the radiator to take over with the radiator, and thus the number of inlet and outlet pipes needs to be controlled. When the inlet and outlet pipes are fewer, the coolant in the multi-channel radiator is unevenly distributed, and the performance of the multi-channel radiator is reduced.
The problems of controlling inlet and outlet pipes and improving uneven distribution of cooling liquid of the prior multi-channel radiator are that a header pipe is added, the geometric shape and the size of a plurality of channels are changed, a baffle plate is added, and the like. The shape of the current common header pipe is rectangular, triangular and the like, and although the problem of multiple inlet and outlet pipes is solved, the effect of improving the problem of uneven flow of the cooling liquid is not obvious. Improving the flow uniformity distribution by changing the geometry and dimensions of the multiple channels can result in some channels being too fine, which in turn can degrade the heat transfer performance of the radiator. The addition of baffle plates creates additional resistance that reduces the flow performance of the multi-channel radiator.
Disclosure of Invention
According to the technical problem, a multi-channel radiator with a cooling liquid distributor is provided.
The invention adopts the following technical means:
a multichannel radiator with a cooling liquid distributor, which comprises an inlet pipe and an outlet pipe which are arranged at the front end and the rear end of a base plate, and a multichannel positioned in the middle of the base plate, wherein the inlet pipe is communicated with the front ends of the multichannel through a distributor A, and the outlet pipe is communicated with the rear ends of the multichannel through a distributor B;
the multi-channel comprises a plurality of sub-channels which are arranged along the up-down direction, and the sub-channels extend along the front-back direction;
the distributor A and the distributor B are obtained by optimally designing distribution areas of the distributor A and the distributor B by a topological optimization method based on a variable density method with the minimum average temperature as an optimization target under constant pressure drop. The distributor A comprises an upper main runner A and a lower main runner A, wherein the two main runners A are converged at the inlet pipe and are communicated with the inlet pipe, each main runner A is provided with a plurality of sub-runners A, the number of the sub-runners A is two less than that of the sub-runners, the two sub-runners A at the middle part are respectively connected with the two sub-runners at the middle part, and the rest sub-runners A are respectively connected with the sub-channels corresponding to the sub-runners;
the distributor B comprises an upper main runner B and a lower main runner B, the two main runners B are converged at the outlet pipe and are communicated with the outlet pipe, a plurality of sub-runners B are arranged on each main runner B, the number of the sub-runners B is matched with the number of the sub-channels, and each sub-runner B is communicated with the sub-channels.
Preferably, the middle part of the distributor A is peach-shaped between the two middle sub-flow channels A, and the sharp angle faces the inlet pipe; the middle part of the distributor B is peach-shaped between the two middle sub-flow passages B, and the sharp angle faces the outlet pipe.
Preferably, the widths of the plurality of sub-flow channels B of the distributor B decrease from the upper side to the lower side to the middle; the widths of a plurality of sub-flow channels A of the distributor A are reduced from the upper side to the lower side to the middle side.
Preferably, the inlet pipe and the outlet pipe are positioned at the middle position of the base plate and are positioned at the same horizontal line, and the inlet pipe and the outlet pipe are distributed in an I shape.
Preferably, the distributor a and the distributor B are obtained by a topological optimization method based on a variable density method, and the distribution areas of the distributor a and the distributor B are optimized with the minimum average temperature as an optimization target under constant pressure drop.
Preferably, the design method of the dispenser a and the dispenser B is as follows:
first, constructing a multi-channel radiator with a distribution area:
constructing a geometric model, determining the positions of the inlet pipe and the outlet pipe, the area of a distributor area and the number and the size of the multiple channels; setting constant pressure drop and heat source distribution, and obtaining the configurations of the distributor A and the distributor B according to the minimum average temperature of the multichannel radiator under the constant pressure drop to realize reasonable distribution of cooling liquid;
secondly, carrying out configuration design on the distributor A and the distributor B through a variable density method and Darcy law:
assuming the flows in the distributor A and the distributor B as Darcy flows, constructing virtual volume force through Darcy law, and realizing that fluid cannot flow in the solid domains of the distributor A and the distributor B and normally flow in the fluid domains; the fixed domain is a solid portion in the dispenser a and the dispenser B, and the fluid domain is a fluid portion in the dispenser a and the dispenser B;
and thirdly, updating the material distribution of the distributor A and the distributor B by an SNOPT method to obtain the result of meeting the convergence condition, and finally obtaining the configuration of the distributor A and the distributor B.
Compared with the prior art, the invention has the following advantages:
a multi-channel radiator with cooling liquid distributor features that a distributor A is installed between single inlet pipe and multiple channels to realize reasonable distribution of cooling liquid from inlet pipe to multiple channels. A distributor B is installed between the multiple channels and the single outlet pipe, realizing the collection of the cooling liquid from the multiple channels to the outlet pipe. In addition, the even distribution of the flow channels in the distributor also enables the distributor to have good heat dissipation performance. The invention realizes reasonable distribution of the cooling liquid of the multi-channel radiator through the distributor, enhances the performance of the multi-channel radiator, reduces the number of inlets and outlets of the multi-channel radiator, and avoids the problems of tightness and pipeline complexity caused by excessive number of inlets and outlets. Solves the problem that the heat radiation performance is affected due to unreasonable distribution of cooling liquid among the flow channels of the multichannel radiator,
based on the reasons, the invention can be widely popularized in the fields of high heat flux local heat exchange and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a multi-channel radiator with a coolant distributor according to an embodiment of the present invention.
Fig. 2 is a schematic view of the dispenser a according to the embodiment of the present invention.
Fig. 3 is a schematic view of a dispenser B according to an embodiment of the present invention.
Fig. 4 is a coolant flow diagram of a multi-channel radiator with coolant distributor in accordance with an embodiment of the present invention.
Fig. 5 is a temperature cloud graph of a multi-channel radiator having a distributor and a rectangular header (fig. a is a multi-channel radiator having a coolant distributor and fig. b is a multi-channel radiator having a rectangular header) according to an embodiment of the present invention.
In the figure: 1. an inlet pipe; 2. a dispenser A; 3. a plurality of channels; 4. a dispenser B; 5. an outlet tube; 6. a main runner A; 7. a sub-runner A; 8. a main runner B; 9. a sub-runner B; 10. a substrate.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in fig. 1, a multi-channel radiator with a coolant distributor includes an inlet pipe 1 and an outlet pipe 5 provided at both front and rear ends of a base plate 10 (the base plate 10 is a metal plate), and a multi-channel 3 located in the middle of the base plate, the inlet pipe 5 communicating with the front ends of the multi-channel 3 through a distributor A2, the outlet pipe 5 communicating with the rear ends of the multi-channel 3 through a distributor B4; the distributor A2 is connected with the inlet pipe 1 and the multichannel 3, so that reasonable distribution of cooling liquid in the inlet pipe 1 to the multichannel 3 is realized, and the distributor B4 realizes reasonable collection of the cooling liquid in the multichannel 3 to the outlet pipe 5. The inlet pipe 1 and the outlet pipe 5 are positioned in the middle of the base plate 10 and are positioned on the same horizontal line, and are distributed in an I shape. The multi-channel 3 includes a plurality of sub-channels (10 sub-channels in this embodiment) arrayed in the up-down direction, and the sub-channels extend in the front-back direction.
The distributor A2 and the distributor B4 are obtained by optimally designing the distribution areas of the distributor A2 and the distributor B4 by a topological optimization method based on a variable density method with the minimum average temperature as an optimization target under constant pressure drop.
As shown in fig. 2, the distributor A2 includes two main flow channels A6, two main flow channels A6 are converged at the inlet pipe 1 and are communicated with the inlet pipe 1, each main flow channel A6 is provided with a plurality of sub flow channels A7 (8 sub flow channels A7 in this specific embodiment), two sub flow channels A7 in the middle are respectively connected with two sub flow channels in the middle, and the rest of sub flow channels A7 are respectively connected with the corresponding sub flow channels; the widths of the plurality of sub-flow channels A7 of the distributor A2 are reduced from the upper side to the lower side to the middle side of the two sub-flow channels A7. The middle part of the distributor A2 is peach-shaped between the two middle sub-flow passages A7, and the sharp angle faces the inlet pipe 1;
as shown in fig. 3, the distributor B4 includes an upper main channel B8 and a lower main channel B8, where the two main channels B8 meet at the outlet pipe 5 and are communicated with the outlet pipe 5, each main channel B8 is provided with a plurality of sub-channels B9 (10 in this embodiment), and each sub-channel B9 is respectively communicated with the corresponding sub-channel. The widths of a plurality of sub-flow channels B9 of the distributor B4 are gradually reduced from the upper side to the lower side to the middle; the middle part of the distributor B4 is peach-shaped between the two middle sub-flow passages B9, and the sharp angle faces the outlet pipe 5.
The distributor A2 and the distributor B4 are obtained by a topological optimization method based on a variable density method, and the distribution areas of the distributor A2 and the distributor B4 are optimized with the minimum average temperature as an optimization target under constant pressure drop.
The design method of the distributor A2 and the distributor B4 is as follows:
first, constructing a multi-channel radiator with a distribution area:
constructing a geometric model, determining the positions of the inlet pipe 1 and the outlet pipe 5, the area of the distributor area and the number and size of the multiple channels 3; setting constant pressure drop and heat source distribution, and obtaining the configurations of the distributor A2 and the distributor B4 according to the minimum average temperature of the multichannel radiator under the constant pressure drop to realize reasonable distribution of cooling liquid;
secondly, the distributor A2 and the distributor B4 are configured by a variable density method and Darcy law:
assuming the flows in the distributor A2 and the distributor B4 as Darcy flows, constructing virtual volume force through Darcy law, and realizing that fluid cannot flow in the solid domains of the distributor A2 and the distributor B4 and normally flows in the fluid domains; the fixed domain is a solid part in the distributor A and the distributor B, forms a material part in the shape of the integral structure of the distributor A2 and the distributor B4, and the fluid domain is a fluid part in the distributor A2 and the distributor B4;
and thirdly, updating the material distribution of the distributor A2 and the distributor B4 by an SNOPT (optimization solver) method to obtain a result meeting the convergence condition, and finally obtaining the configuration of the distributor A2 and the distributor B4.
As shown in fig. 4, a cooling liquid flow diagram of a multi-channel radiator with a cooling liquid distributor is shown, and it can be seen from the drawing that the distributor makes the cooling liquid flow in the multi-channel present a reasonable state, namely that "the cooling liquid flow lines in the channels with low flow rate are more and the cooling liquid flow lines in the channels with high flow rate are less".
As shown in fig. 5, a multi-channel radiator temperature cloud having a distributor and rectangular headers, from which it can be seen that the multi-channel radiator having a coolant distributor has a smaller temperature and a more uniform temperature distribution.
It can be seen from fig. 4 and 5 that a multi-channel radiator with a coolant distributor has a reasonable coolant distribution and better heat exchange performance.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (6)

1. A multichannel radiator with a cooling liquid distributor, comprising an inlet pipe and an outlet pipe which are arranged at the front end and the rear end of a base plate and a multichannel positioned in the middle of the base plate, wherein the inlet pipe is communicated with the front end of the multichannel through a distributor A, and the outlet pipe is communicated with the rear end of the multichannel through a distributor B;
the multi-channel comprises a plurality of sub-channels which are arranged along the up-down direction, and the sub-channels extend along the front-back direction;
the distributor A comprises an upper main runner A and a lower main runner A, wherein the two main runners A are converged at the inlet pipe and are communicated with the inlet pipe, each main runner A is provided with a plurality of sub-runners A, the number of the sub-runners A is two less than that of the sub-runners, the two sub-runners A at the middle part are respectively connected with the two sub-runners at the middle part, and the rest sub-runners A are respectively connected with the sub-channels corresponding to the sub-runners;
the distributor B comprises an upper main runner B and a lower main runner B, the two main runners B are converged at the outlet pipe and are communicated with the outlet pipe, a plurality of sub-runners B are arranged on each main runner B, the number of the sub-runners B is matched with the number of the sub-channels, and each sub-runner B is communicated with the sub-channels.
2. A multi-channel radiator with a coolant distributor according to claim 1, characterized in that the middle part of the distributor a is peach-shaped between the two sub-channels a at the middle, and the sharp corners are directed towards the inlet pipe; the middle part of the distributor B is peach-shaped between the two middle sub-flow passages B, and the sharp angle faces the outlet pipe.
3. A multi-channel radiator having a coolant distributor according to claim 1, wherein the widths of a plurality of the sub-channels B of the distributor B decrease from the upper and lower sides toward the middle; the widths of a plurality of sub-flow channels A of the distributor A are reduced from the upper side to the lower side to the middle side.
4. A multi-channel radiator with a coolant distributor according to claim 1, characterized in that the inlet pipe and the outlet pipe are located in the middle of the base plate and are in the same horizontal line, exhibiting an I-shaped distribution.
5. A multi-channel radiator with coolant distributor according to claim 1, characterized in that the distributor a and the distributor B are optimally designed for a constant pressure drop with minimum average temperature as optimization objective by a topology optimization method based on a variable density method.
6. The multi-channel radiator with coolant distributor according to claim 5, wherein the design method of the distributor a and the distributor B is as follows:
first, constructing a multi-channel radiator with a distribution area:
constructing a geometric model, determining the positions of the inlet pipe and the outlet pipe, the area of a distributor area and the number and the size of the multiple channels; setting constant pressure drop and heat source distribution, and obtaining the configurations of the distributor A and the distributor B according to the minimum average temperature of the multichannel radiator under the constant pressure drop to realize reasonable distribution of cooling liquid;
secondly, carrying out configuration design on the distributor A and the distributor B through a variable density method and Darcy law:
assuming the flows in the distributor A and the distributor B as Darcy flows, constructing virtual volume force through Darcy law, and realizing that fluid cannot flow in the solid domains of the distributor A and the distributor B and normally flow in the fluid domains; the fixed domain is a solid portion in the dispenser a and the dispenser B, and the fluid domain is a fluid portion in the dispenser a and the dispenser B;
and thirdly, updating the material distribution of the distributor A and the distributor B by an SNOPT method to obtain the result of meeting the convergence condition, and finally obtaining the configuration of the distributor A and the distributor B.
CN202310825437.8A 2023-07-06 2023-07-06 Multichannel radiator with coolant distributor Pending CN116960083A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310825437.8A CN116960083A (en) 2023-07-06 2023-07-06 Multichannel radiator with coolant distributor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310825437.8A CN116960083A (en) 2023-07-06 2023-07-06 Multichannel radiator with coolant distributor

Publications (1)

Publication Number Publication Date
CN116960083A true CN116960083A (en) 2023-10-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310825437.8A Pending CN116960083A (en) 2023-07-06 2023-07-06 Multichannel radiator with coolant distributor

Country Status (1)

Country Link
CN (1) CN116960083A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116770336A (en) * 2023-08-08 2023-09-19 清华大学 Bipolar plate and proton exchange film electrolytic tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116770336A (en) * 2023-08-08 2023-09-19 清华大学 Bipolar plate and proton exchange film electrolytic tank
CN116770336B (en) * 2023-08-08 2023-12-26 清华大学 Bipolar plate and proton exchange film electrolytic tank

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