CN208300185U - natural convection radiator - Google Patents
natural convection radiator Download PDFInfo
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- CN208300185U CN208300185U CN201721879646.7U CN201721879646U CN208300185U CN 208300185 U CN208300185 U CN 208300185U CN 201721879646 U CN201721879646 U CN 201721879646U CN 208300185 U CN208300185 U CN 208300185U
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- Prior art keywords
- curved surface
- heat sink
- natural convection
- surface wing
- pedestal
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a kind of natural convection radiators, including pedestal, the thermal conductive surface of pedestal one end setting being in close contact with heater element, multiple curved surface wing heat sinks are connected on the pedestal, the curved surface fin formula cooling fin is the arc being bent upwards, form the arc heat dissipation channel being bent upwards between adjacent curved surface wing heat sink, the angle of each curved surface wing heat sink and thermal conductive surface is an acute angle.The utility model has the advantages that not needing that higher heat dissipation effect can be reached using water cooling plant and radiator fan.
Description
Technical field
The utility model relates to heat dissipation elements, do not need more particularly, to one kind using water cooling plant and radiator fan energy
Reach the natural convection radiator of higher heat dissipation effect.
Background technique
The prior art provides dissipating for several general types for the heat dissipation of electric machine controller and its relative electronic components
Hot mode: the high electronic device of power density generally uses water-cooling pattern or air blast cooling mode, small general of power density
Using the natural type of cooling, according to actual needs, the temperature of controller or electronic component is reduced using the different types of cooling,
Guarantee the control of its operating temperature in suitable range.Water cooling and air blast cooling heat dissipation effect are fairly obvious, but need using water
Cool equipment and installation fan, occupy system space, general small-sized household car because in cabin space it is limited and be in closed environment, this
Outer water cooling is tighter to sealing requirements, influences system reliability；General nature convection type, constructional simplicity can be reliable but right
Poor effect is flowed, heat dissipation performance is low, is not able to satisfy day power and increasingly increases and cooling requirements when device benefit centralized arrangement.Mesh
Before, electric machine controller radiator is substantially empirical estimating, coarse designs, both uses natural convection air mode in structure, but not
Consider cross-ventilation principle, increases radiating surface simply only to occupy more spaces；High thermal conductivity is merely pursued on material
Material is unaware that the advantage and meaning that heat uniformly transmits not in view of the influence of diffusion thermal resistance on heat transfer path；
In addition also inadequate for the attention of thermal contact resistance.
Utility model content
To solve the above problems, the utility model aim is that providing one kind does not need using water cooling plant and radiator fan
The natural convection radiator of higher heat dissipation effect can be reached.
The utility model realized by following technical measures, a kind of natural convection radiator, including pedestal, the pedestal
The thermal conductive surface of one end setting being in close contact with heater element, is connected with multiple curved surface wing heat sinks on the pedestal, described
Curved surface fin formula cooling fin is the arc being bent upwards, and the arc heat dissipation being bent upwards is formed between adjacent curved surface wing heat sink
The angle of channel, each curved surface wing heat sink and thermal conductive surface is an acute angle.
Each curved surface wing heat sink lamination is alternatively arranged as a preferred method, and the one of the curved surface wing heat sink
Hold endothermic section connection on the base, the radiator portion of the other end of the curved surface wing heat sink is from the radial stretching, extension in center
It opens.
Hollow inlet chamber, one end of each arc heat dissipation channel are set as among the pedestal as a preferred method,
It is connected to inlet chamber.
The curved surface wing heat sink is made using calendering technology as a preferred method,.
The curved surface wing heat sink is inlayed in indentation pedestal as a preferred method,.
The curved surface wing heat sink is inlayed in indentation pedestal using vacuum brazing as a preferred method,.
The curved surface wing heat sink and pedestal are aluminium alloy or copper alloy as a preferred method,.
The thermal conductive surface is graphite heat radiation fin as a preferred method,.
The natural convection radiator is rectangular as a preferred method,.
The curved surface wing heat sink is graphite heat radiation fin as a preferred method,.
The utility model considers stream of hot air dynamic characteristic, and the curved surface fin formula cooling fin being bent upwards and arc is taken to dissipate
The passage of heat rises air naturally and forms stronger free convection, improves heat dissipation performance；Curved surface fin formula fin density is according to hair
Thermal element calorific value determines；It is provided with biggish heat conducting base on radiator simultaneously, thermal capacitance is big, and heat source fever is abnormal to increase
When, it also can guarantee that temperature is not too high, and fansink designs are to meet the structure of sink flow principle, sufficiently reduce diffusion thermal resistance
Influence.Curved surface fin formula cooling fin surround at a certain angle along disc and spirals up, each curved surface wing heat sink and thermal conductive surface
Angle be an acute angle, form radiating surface and air circulation channel according to aerodynamic principle and meet the low stream of thermal updrafts
The dynamic channel of choked flow, is absorbed heat using air and expands the flow mechanism of rising, form stronger free convection, and dissipating for radiator is improved
Hot property.Curved surface wing heat sink border curve and passage curve move Related Mechanism according to hot-air and are determined, between distribution
Away from also calculating matching is carried out according to cooling heat source size, optimal heat dissipation effect can achieve.The utility model does not need to use
Water cooling plant and radiator fan can reach higher heat dissipation effect, compared with conventional gilled radiator, heat source and other
In the case that part is identical, and heat dissipation area and volume are also essentially identical, controller and electronic component can be more effectively reduced
Operating temperature.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the bottom view of the utility model embodiment.
Fig. 3 is the structural schematic diagram of the adjacent two curved surface wing heat sinks of the utility model embodiment.
Fig. 4 is the baseplate temp of the utility model embodiment and traditional heat sinks with the variation contrast table of heating power.
Specific embodiment
Below with reference to embodiment and compares attached drawing the utility model is described in further detail.
A kind of natural convection radiator of the present embodiment please refers to attached drawing 1 to Fig. 3, including pedestal 1, described 1 one end of pedestal
The thermal conductive surface 5 being in close contact with heater element being arranged, is connected with multiple curved surface wing heat sinks 2, the song on the pedestal 1
The finned cooling fin 2 in face is the arc being bent upwards, and the arc heat dissipation being bent upwards is formed between adjacent curved surface wing heat sink 2
Channel 3, each curved surface wing heat sink 2 and the angle of thermal conductive surface 5 are an acute angle.
This natural convection radiator considers stream of hot air dynamic characteristic, takes the curved surface fin formula cooling fin 2 being bent upwards
And arc heat dissipation channel 3, increase naturally air and form stronger free convection, improves heat dissipation performance；Curved surface fin formula cooling fin 2
Density is determined according to heating element generating heat amount；It is provided with biggish heat conducting base on radiator simultaneously, thermal capacitance is big, heat source fever
It when abnormal increase, also can guarantee that temperature is not too high, and fansink designs are to meet the structure of sink flow principle, sufficiently reduce
Spread the influence of thermal resistance.Curved surface fin formula cooling fin 2 surround at a certain angle along disc and spirals up, each curved surface wing heat sink
2 and the angle of thermal conductive surface 5 are an acute angle, form radiating surface and air circulation channel meets according to aerodynamic principle
The channel for rising the low flow resistance flowing of thermal current, is absorbed heat using air and expands the flow mechanism of rising, formed stronger free convection, mention
The heat dissipation performance of high radiator.2 border curve of curved surface wing heat sink and passage curve according to hot-air move Related Mechanism into
Row determines that distribution spacing also carries out calculating matching according to cooling heat source size, can achieve optimal heat dissipation effect.This is naturally right
Flow heat dissipation device does not need that higher heat dissipation effect can be reached using water cooling plant and radiator fan, radiates with conventional chip
In the case that device is compared, and heat source and other conditions are identical, and heat dissipation area and volume are also essentially identical, baseplate temp is with fever function
The difference of rate (variation range 100W-700W) variation is up to 35 DEG C, is specifically shown in Fig. 4, and wherein horizontal axis is power of heat source/W, the longitudinal axis
For baseplate temp/DEG C, t1 be conventional diffusers bottom plate temperature curve, t2 be the utility model embodiment natural convection radiator
The temperature curve of bottom plate；As it can be seen that this natural convection radiator can be effectively reduced controller compared with conventional gilled radiator
And the operating temperature of electronic component.
In the embodiment of a natural convection radiator, Fig. 1 to Fig. 3 is please referred to, it is specific on the basis of technical solution in front
It is also possible that each 2 lamination of curved surface wing heat sink is alternatively arranged, one end endothermic section of the curved surface wing heat sink 2 is connected to
On pedestal 1, the radiator portion of the other end of the curved surface wing heat sink 2 trails from center is radial.Adjacent two curved surface
The planform and the positional relationship after installation of wing heat sink 2, are shown in attached drawing 3, along direction of heat flow, curved surface wing heat sink 2
Between gap increase, meet hot-air expanded by heating principle, reduce cross-ventilation resistance, and curved surface wing to greatest extent
Cooling fin 2 and vertical direction enable hot-air to spiral surface when rising sufficiently with curved surface wing heat sink 2 there are an angle
Contact, while increasing air flow, additionally aids destruction fluid boundary layer, so that hot-air can under lower flow velocity
Reach turbulent condition, greatly provides convection transfer rate.
In the embodiment of a natural convection radiator, Fig. 1 to Fig. 3 is please referred to, it is specific on the basis of technical solution in front
It is also possible that being set as hollow inlet chamber 4 among pedestal 1, one end of each arc heat dissipation channel is connected to inlet chamber 4.Production
Good curved surface wing heat sink 2 is inlayed in indentation cooling base inlet chamber 4, to reach contact effect well, can cooperate use
Vacuum Soldering Technology avoids gap from existing and generate thermal contact resistance.
In the embodiment of a natural convection radiator, Fig. 1 to Fig. 3 is please referred to, it is specific on the basis of technical solution in front
It is also possible that curved surface wing heat sink 2 is made using calendering technology.
In the embodiment of a natural convection radiator, Fig. 1 to Fig. 3 is please referred to, it is specific on the basis of technical solution in front
It is also possible that curved surface wing heat sink 2 and pedestal 1 are aluminium alloy or copper alloy.Radiator uses property aluminum alloy materials,
There are higher thermal coefficient and preferable hardness；Base material --- the property aluminum alloy materials of function admirable are selected, and
Designing reasonable base shape reduces diffusion thermal resistance.The direction thermally-conductive interface that base shape is spread along hot-fluid gradually reduces, symbol
It closes hot-fluid and gradually spreads the changing rule of reduction, reasonable utilization material reduces the volume of radiator.For base material
With 2 material of curved surface wing heat sink, Cu alloy material can be also selected as needed, but material processing performance must satisfy requirement,
It can further increase the heat dissipation performance of radiator using Cu alloy material, but corresponding weight also increases more, this is for being
It is adversely affected in terms of system loss of weight, should take the circumstances into consideration to select according to the actual situation.
In the embodiment of a natural convection radiator, Fig. 1 to Fig. 3 is please referred to, it is specific on the basis of technical solution in front
It is also possible that thermal conductive surface 5 is graphite heat radiation fin, interface Heat Conduction Material selects high performance graphite cooling fin, can be quickly equal by heat
It is transferred to entire heat-absorbent surface evenly, reduces diffusion thermal resistance and thermal contact resistance.
In the embodiment of a natural convection radiator, Fig. 1 to Fig. 2 is please referred to, it is specific on the basis of technical solution in front
It is also possible that natural convection radiator is rectangular.It can be pushed further into the miniaturization, integrated of radiator, it is rectangular convenient for dissipating
Gather a certain number of small heat-dissipating devices on hot bottom plate, will reach better heat dissipation effect.
In the embodiment of a natural convection radiator, Fig. 1 to Fig. 3 is please referred to, it is specific on the basis of technical solution in front
It is also possible that graphite heat radiation fin can be used in curved surface wing heat sink 2.Select high performance graphite cooling fin reduce diffusion thermal resistance and
Interface contact heat resistance, due to the special lamellar molecular structure of graphite, the thermal coefficient in graphite heat radiation fin level is up to
1500W/mK, interlayer thermal diffusion thermal coefficient be 20W/mK, thermal conduction resistance divides heat rapidly and evenly in extremely low layer
Cloth greatly reduces diffusion thermal resistance in base plate of radiator plane；Graphite heat radiation fin, can will be warm due to higher thermal conductivity
Amount is rapidly transmitted and is distributed, and comprehensive heat dissipation effect is metallic copper, twice or more of aluminium；Ultra-thin graphite heat radiation fin can also
Mitigate device weight, more excellent heat conduction and heat radiation performance can be provided, and there is excellent flexibility, can made larger relatively thin
It is laminar structured, it can be well adapted for any surface, thermal contact resistance can be effectively reduced.
It is to be expounded to the utility model natural convection radiator above, is used to help understand the utility model, but
The embodiments of the present invention is simultaneously not restricted to the described embodiments, any to change without departing from made under the utility model principle
Become, modification, substitution, combination, simplify, should be equivalent substitute mode, be included in the interior of the protection scope of the utility model.
Claims (10)
1. a kind of natural convection radiator, it is characterised in that: including pedestal, described pedestal one end is arranged close with heater element
The thermal conductive surface of contact, multiple curved surface wing heat sinks are connected on the pedestal, and the curved surface wing heat sink is to be bent upwards
Arc, form the arc heat dissipation channel being bent upwards between adjacent curved surface wing heat sink, each curved surface wing heat sink with lead
The angle in hot face is an acute angle.
2. natural convection radiator according to claim 1, it is characterised in that: each curved surface wing heat sink lamination interval row
Column, on the base, the other end of the curved surface wing heat sink dissipates for one end endothermic section connection of the curved surface wing heat sink
Hot part trails from center is radial.
3. natural convection radiator according to claim 1, it is characterised in that: be set as among the pedestal it is hollow into
One end of air cavity, each arc heat dissipation channel is connected to inlet chamber.
4. natural convection radiator according to claim 1, it is characterised in that: the curved surface wing heat sink is using calendering
Technique is made.
5. natural convection radiator according to claim 1, it is characterised in that: the curved surface wing heat sink inlays indentation
In pedestal.
6. natural convection radiator according to claim 1, it is characterised in that: the curved surface wing heat sink uses vacuum
Soldering is inlayed in indentation pedestal.
7. natural convection radiator according to claim 1, it is characterised in that: the curved surface wing heat sink and pedestal are
Aluminium alloy or copper alloy.
8. natural convection radiator according to claim 1, it is characterised in that: the thermal conductive surface is graphite heat radiation fin.
9. natural convection radiator according to claim 1, it is characterised in that: the natural convection radiator is rectangular.
10. natural convection radiator according to claim 1, it is characterised in that: the curved surface wing heat sink is graphite
Cooling fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721879646.7U CN208300185U (en) | 2017-12-28 | 2017-12-28 | natural convection radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721879646.7U CN208300185U (en) | 2017-12-28 | 2017-12-28 | natural convection radiator |
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| Publication Number | Publication Date |
|---|---|
| CN208300185U true CN208300185U (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721879646.7U Expired - Fee Related CN208300185U (en) | 2017-12-28 | 2017-12-28 | natural convection radiator |
Country Status (1)
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| CN (1) | CN208300185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108024484A (en) * | 2017-12-28 | 2018-05-11 | 深圳红河马智能数字动力技术有限公司 | Natural convection radiator |
-
2017
- 2017-12-28 CN CN201721879646.7U patent/CN208300185U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108024484A (en) * | 2017-12-28 | 2018-05-11 | 深圳红河马智能数字动力技术有限公司 | Natural convection radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190111 Address after: 610066 No. 845 Haitang Road, Jinjiang District, Chengdu City, Sichuan Province Patentee after: Sichuan Fengguyuan New Energy Co., Ltd. Address before: 518000 Tongfu Industrial City, Tanglang, Xili Street, Nanshan District, Shenzhen City, Guangdong Province, 11 buildings, 1-2 buildings Patentee before: Red River, Shenzhen horse intelligent digital power technology Co., Ltd |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 Termination date: 20201228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |