CN108617148A - A kind of heat sink of Trapezoidal water channel - Google Patents
A kind of heat sink of Trapezoidal water channel Download PDFInfo
- Publication number
- CN108617148A CN108617148A CN201810575677.6A CN201810575677A CN108617148A CN 108617148 A CN108617148 A CN 108617148A CN 201810575677 A CN201810575677 A CN 201810575677A CN 108617148 A CN108617148 A CN 108617148A
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- China
- Prior art keywords
- water channel
- heat sink
- channel
- trapezoidal
- width
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- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a kind of heat sinks of Trapezoidal water channel, the heat dissipation effect of each water channel is balanced by changing channel width, water channel far from main entrance and general export gradually broadens, and is using one or more S-shaped water channel close to the side of main entrance general export；The heat sink of the Trapezoidal water channel can reach the more uniform better purpose of heat dissipation effect of Temperature Distribution.
Description
Technical field
Present invention relates particularly to a kind of heat sinks of Trapezoidal water channel.
Background technology
Liquid cooling radiator is widely used as the cooling dress of high-power electronic device due to small heat dissipation performance height
It sets.Existing liquid coldplate, such as Chinese patent CN105658027A " liquid cooling plate for electronic unit cooling ", have used more
It is a end to end " " serial water channel ensures the consistent of flow velocity to S-shaped, while increasing groove in water channel to improve heat dissipation area.Liquid
Body flow distance is long necessarily to cause the inlet and outlet temperature difference, to the uneven or hot-spot that causes to radiate.Meanwhile in specified stream
It measures in big system, the pressure drop of S-shaped water channel can cause flow to be unable to reach metered flow and electronic equipment is caused to cross cause thermal damage.
Invention content
The purpose of the present invention is to solve the shortcomings of the prior art place, provides a kind of heat sink of Trapezoidal water channel, with
Reach the more uniform better purpose of heat dissipation effect of Temperature Distribution.
The purpose of the present invention is achieved by the following technical programs.
A kind of heat sink of Trapezoidal water channel balances the heat dissipation effect of each water channel by changing channel width, special
Sign is：Water channel far from main entrance and general export gradually broadens, and close to the side of main entrance general export using one or
More than one S-shaped water channel；
The basic design parameters of Trapezoidal water channel include：Total flow, heat sink are long, heat sink is wide, water channel depth, general import
General export channel width；
Pressure drop for parallel water channel：
For laminar flow：
For turbulent flow：
Pressure drop for S-shaped halfturn part:
Wherein, Δ P is heat sink overall presure drop, fDFor friction coefficient, L is water channel length, and ρ is coolant liquid density, and V is cooling
Flow velocity, dhIt is characterized length, Re is Reynolds number, and a is channel width, and b is water channel depth, fsFor friction coefficient, RbFor turning half
Diameter, kbFor bending part friction coefficient.
Further, the width of each individually S water channels is equal, but the width of more than one parallel S-shaped water channel is simultaneously
It is unequal.
Principle explanation：
Existing scheme is using the distance of shortening coolant flow to reduce the pressure difference of inlet and outlet.Most simplified mode is to make
With multiple parallel water channels, with heat sink coolant liquid main entrance in the same side, the outlet of each water channel is dissipating the entrance of each water channel
Hot plate coolant liquid general export side.The width of each water channel is equal and the distance between each water channel is essentially equal.
And the shortcomings that this design, to be Temperature Distribution owed uniform, temperature is minimum near main entrance, and temperature is most at general export
It is high.And coolant liquid main entrance and general export distance are farther out, and pipeline occupied space is very big in practical applications, total when heat sink
When entrance and closer general export distance (such as entrance design in Chinese patent CN105658027A), in equidistant parallel water channel
Flow velocity/flow of coolant liquid can be less than far from main entrance general export side close to main entrance general export side, low flow velocity/flow
Area can not good heat radiating, cause heat dissipation uneven, in order to overcome this defect, this programme to devise a kind of Trapezoidal water channel heat dissipation
Plate balances the heat dissipation effect of each water channel by changing channel width：Water channel far from main entrance general export gradually broadens, and makes
Flow velocity of the coolant liquid in each water channel it is equal, area it is larger heat sink design in, merely use Trapezoidal parallel water
Road can cause the processing and manufacturing of most ditch extremely difficult.Therefore, ensureing that minimum process size is satisfiable, also
Single or multiple S-shaped water channels side by side can be being used close to the side of main entrance general export.
The beneficial effects of the invention are as follows：Flow rate of liquid is set to exist by the variation of channel width and shape using parallel water channel
It is consistent to reduce overall presure drop in all water channels, while Temperature Distribution more Homogeneouslly-radiating effect is more preferable, can use in height
On flow or the high-power electronic device of large area.
Description of the drawings
Fig. 1 is the structural schematic diagram of existing heat sink water channel；
Fig. 2 is the structural schematic diagram of the heat sink of Trapezoidal water channel of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing and specific implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.
Embodiment
As shown in Figure 1, existing heat sink water channel, including coolant inlet 1, cooling liquid outlet 2 and multiple head are used
What tail connected " " serial water channel 3 causes the inlet and outlet temperature difference to S-shaped since liquid flow distance is long, uneven to generate heat dissipation
Even or hot-spot.
As shown in Fig. 2, a kind of heat sink of Trapezoidal water channel of the present invention, each water is balanced by changing channel width
The heat dissipation effect in road, the water channel far from main entrance 4 and general export 5 gradually broaden, and in the side close to main entrance 4, general export 5
Use one or more S-shaped water channel 6；
The basic design parameters of Trapezoidal water channel include：Total flow, heat sink are long, heat sink is wide, water channel depth, general import
General export channel width；
Pressure drop for parallel water channel：
For laminar flow：
For turbulent flow：
Pressure drop for S-shaped halfturn part:
Wherein, Δ P is heat sink overall presure drop, fDFor friction coefficient, L is water channel length, and ρ is coolant liquid density, and V is cooling
Flow velocity, dhIt is characterized length, Re is Reynolds number, and a is channel width, and b is water channel depth, fsFor friction coefficient, RbFor turning half
Diameter, kbFor bending part friction coefficient.
The width of each individually S water channels is equal, but the width of more than one parallel S-shaped water channel and unequal.
The beneficial effects of the invention are as follows：Flow rate of liquid is set to exist by the variation of channel width and shape using parallel water channel
It is consistent to reduce overall presure drop in all water channels, while Temperature Distribution more Homogeneouslly-radiating effect is more preferable, can use in height
On flow or the high-power electronic device of large area.
Certainly, the representative instance of the above only present invention, in addition to this, the present invention can also have other a variety of specific implementations
Mode, all technical solutions formed using equivalent substitution or equivalent transformation, is all fallen within the scope of protection of present invention.
Claims (2)
1. a kind of heat sink of Trapezoidal water channel balances the heat dissipation effect of each water channel, feature by changing channel width
It is：Water channel far from main entrance and general export gradually broadens, and is using one or one close to the side of main entrance general export
A above S-shaped water channel；
The basic design parameters of Trapezoidal water channel include：Total flow, heat sink are long, heat sink is wide, water channel depth, general import always go out
Mouth channel width；
Pressure drop for parallel water channel：
For laminar flow：
For turbulent flow：
Pressure drop for S-shaped halfturn part:
Wherein, Δ P is heat sink overall presure drop, fDFor friction coefficient, L is water channel length, and ρ is coolant liquid density, and V is cooling liquid stream
Speed, dhIt is characterized length, Re is Reynolds number, and a is channel width, and b is water channel depth, fsFor friction coefficient, RbFor turning radius,
kbFor bending part friction coefficient.
2. the heat sink of Trapezoidal water channel as described in claim 1, it is characterised in that：The width phase of each individually S water channels
Deng.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575677.6A CN108617148A (en) | 2018-06-06 | 2018-06-06 | A kind of heat sink of Trapezoidal water channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575677.6A CN108617148A (en) | 2018-06-06 | 2018-06-06 | A kind of heat sink of Trapezoidal water channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108617148A true CN108617148A (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810575677.6A Pending CN108617148A (en) | 2018-06-06 | 2018-06-06 | A kind of heat sink of Trapezoidal water channel |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010203694A (en) * | 2009-03-04 | 2010-09-16 | Showa Denko Kk | Liquid cooling type cooling device |
| CN103503131A (en) * | 2011-04-26 | 2014-01-08 | 富士电机株式会社 | Cooler for semiconductor module, and semiconductor module |
| CN105658027A (en) * | 2015-10-22 | 2016-06-08 | 浙江大学 | Liquid cooling plate used for electronic component cooling |
| CN107196015A (en) * | 2017-06-26 | 2017-09-22 | 安徽天鑫能源科技有限公司 | The water-cooling heat radiating device of new energy car battery bag |
| CN208175232U (en) * | 2018-06-06 | 2018-11-30 | 张家港首驱动力科技有限公司 | A kind of heat sink of Trapezoidal water channel |
-
2018
- 2018-06-06 CN CN201810575677.6A patent/CN108617148A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010203694A (en) * | 2009-03-04 | 2010-09-16 | Showa Denko Kk | Liquid cooling type cooling device |
| CN103503131A (en) * | 2011-04-26 | 2014-01-08 | 富士电机株式会社 | Cooler for semiconductor module, and semiconductor module |
| CN105658027A (en) * | 2015-10-22 | 2016-06-08 | 浙江大学 | Liquid cooling plate used for electronic component cooling |
| CN107196015A (en) * | 2017-06-26 | 2017-09-22 | 安徽天鑫能源科技有限公司 | The water-cooling heat radiating device of new energy car battery bag |
| CN208175232U (en) * | 2018-06-06 | 2018-11-30 | 张家港首驱动力科技有限公司 | A kind of heat sink of Trapezoidal water channel |
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