CN105453257A - Enhanced structure for natural cooling heat sink - Google Patents
Enhanced structure for natural cooling heat sink Download PDFInfo
- Publication number
- CN105453257A CN105453257A CN201380078759.5A CN201380078759A CN105453257A CN 105453257 A CN105453257 A CN 105453257A CN 201380078759 A CN201380078759 A CN 201380078759A CN 105453257 A CN105453257 A CN 105453257A
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- Prior art keywords
- radiator
- fin
- group
- air
- groups
- Prior art date
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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
- H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention relates to a heat sink for instance for use in a remote radio unit comprising a plurality of fins (8, 9, 10) arranged such that channels (11, 12, 13) are formed between adjacent fins, said channels (11, 12, 13) comprising an air inflow and an air outflow, wherein the heat sink comprises at least two groups (5, 6, 7) of fins (8, 9, 10) arranged such that the air inflow of the channels of a first of said groups (5) is located differently from the air outflow of the channels of the remaining of said groups (6, 7). The invention furthermore relates to a method of cooling a heat- generating device, such as a remote radio unit, the method comprising providing at least two groups of air flow channels in thermal contact with said heat- generating device, each channel having an air inflow region and an air outflow region, wherein the air inflow regions of the channels of the first group are located differently from the air outflow regions of the channels of the remaining groups, such that hot air leaving through the air outflow regions of said remaining groups is prevented from entering the channels of the first group through the respective air inflow regions of the first group.
Description
The present invention relates generally to the radiator for electronic equipments such as cooled RF extension units (RRU), more specifically, relates to the radiator being obtained cooling effect by free convection.
Background technology
Compared with transmission base station, distributed base station is with the obvious advantage, such as, be easy to installation, operation and maintenance.Meanwhile, operating personnel want that power output is high, lightweight, volume is little, and this causes the heat density of RRU higher.RRU is the primary module of distributed base station.Nowadays, RRU hear rate is raised to current 300W from 200W, and RRU cooling becomes more and more important and challenging.
By adopting radiator and utilizing free convection to cool RRU.Prior art RRU radiator is shown in Figure 1 and primarily of straight fins composition, straight fins is optimized improve total cooling capacity and obtain lower temperature in the cells, which based on inner hear rate, radiator height and its temperature.Current optimization method mentioned above can not improve cooling capacity further, must apply some new designs or technology to improve cooling.
The standard method promoting RRU cooling capacity expands HS volume, as shown in Figure 2.The increase of HS volume means that fin is higher to be increased with HS surface area, and this is extremely important to heat radiation.
Another prior art of RRU cooling capacity is application fan cooled, as shown in 3 figure.Independently fan frame is fixed on RRU top, and because main heat transfer mechanisms becomes forced convertion from free convection, RRU cooling capacity is improved.
There is a large amount of problem in prior art radiator.Therefore, in order to promote RRU cooling capacity, a prior art solution is mentioned above increasing cooled region, and the volume and weight which results in RRU increases.Volume increase does not meet the object that operating personnel reduce website overall appearance.Weight increases higher for the requirement causing carrying out installing on tower or bar, and causes cost higher.The prior art is not easily accepted by operating personnel.
Another prior art solution increases independently fan frame.But separate fan can not effectively reduce RRU volume, independently fan frame is by the RRU outward appearance made new advances and volume, and in addition, independently fan frame can not meet the requirement of operating personnel to simple, unified outward appearance.In addition, fan frame needs to safeguard, when RRU is fixing on the wall, tower or some other high positions time, difficult in maintenance and expensive.Therefore, the prior art solution is also difficult to be accepted by operating personnel
In the traditional heat sinks with straight fins, due to buoyancy, air flows through the air duct formed between fin, and air is constantly heated when air flows to top from bottom.As a result, in the first half of RRU, air themperature is higher, and therefore the cooling capacity of the fin in this region is more weak.
Summary of the invention
Under this background, an object of the present invention is to provide the radiator overcoming or at least alleviate prior art problem.
In enhancing heat spreader structures according to the present invention, the length of the air duct formed between adjacent fins shortens, thus reduces self-heating effect.According to the present invention, realize identical radiator volume but cooling capacity is higher.
According to the present invention, provide a kind of radiator comprising multiple fin, arrange that described multiple fin makes to form passage between adjacent fins, wherein said passage includes air port and air outlet.Radiator according to the present invention comprises at least two group fins, arranges that described fin makes the different of the air outlet of the position of the described air intake vent of the described passage of first group and the described passage of remaining set.Therefore, the described passage of described first group of passage is prevented from entering from the hot-air of the described air outlet of the passage group be positioned at below described first group of passage.
Should note, in this article, term " air intake vent " refers to that air enters one or more place or the region of heat spreader structures from surrounding environment, and similarly, term " air outlet " refers to that air leaves heat spreader structures and flows out to one or more place or the region of surrounding environment.These places or region represent with arrow in of the present invention illustrating, and it should be understood that these expressions are only exemplary, and show some specified places flowing into structure and flow out structure.Further, when the flowing of the hot-air in passage is herein by buoyancy-driven upwards, should be appreciated that in this manual, " one " group fin or passage refer to the group of the air-flow direction be arranged in caused by the buoyancy of hot-air.Therefore, such as, in two embodiments illustrated respectively in figures 4 and 5, corresponding longitudinal axis Y extends on direction upwards perpendicular to the ground.
According to embodiments of the invention, at least two group fins described in layout make the longitudinal of the fin of described first group be that α angle extends relative to the longitudinal direction of the fin of described second group, wherein α ≠ 0 degree.
By illustrating, present clear according to other targets of enhancing radiator of the present invention, feature, advantage and character.
Accompanying drawing explanation
Describe in the following detailed portion of content at this, explain the present invention in more detail by referring to the exemplary embodiment of showing in accompanying drawing, wherein:
Fig. 1 is the first example of prior art radiator;
Fig. 2 is the second example of prior art radiator, wherein strengthens cooling effect by the increase height of fin and the cooled region of radiator;
Fig. 3 is the 3rd example of prior art radiator, wherein by providing the fan by heat transfer mechanisms becomes forced convertion from free convection to obtain the cooling capacity strengthened;
Fig. 4 is schematically illustrating according to the hot fin structure of the first embodiment of the present invention; And
Fig. 5 is schematically illustrating of hot fin structure according to a second embodiment of the present invention.
the specific descriptions of preferred embodiment
With reference to figure 1, show the prior art radiator 1 of a part for the fin 2 comprising relatively low height.When finding that the cooling capacity of the prior art radiator is not enough, the height of fin can be increased, as according to the prior art radiator of Fig. 2, thus increase the cooled region of each fin.
Fig. 3 shows the replacement scheme of the cooling effectiveness of an acquisition increase of the height by increasing fin, wherein applies fan cooled.One or more cooling fans 4 are placed in the top of RRU, and because main heat transfer mechanisms has become forced convertion from free convection (in fig 1 and 2), cooling capacity is improved.
With reference to figure 4, show schematically illustrating according to the hot fin structure of the first embodiment of the present invention.According to the present embodiment, radiator is divided into 5,6 and 7 three groups: group 5 above, wherein fin 8 is vertical (as shown in the figure), the group 6 being positioned at lower left, and wherein fin 9 points to upper left side sideling and is positioned at bottom-right group 7, and wherein fin 10 points to upper right side sideling.
Near the air quantity being expressed as air intake vent 1 and air intake vent 2, air flows into from the front portion of radiator 1 passage 11 formed by adjacent fins 8, the vertical fins 8 continuing finally upwards to flow along air flows, and then flows out the spatial accommodation of radiator from air outlet 1 and air outlet 2.
In addition, air is from the lower left group 6 of the bottom inflow radiator near the front end near air intake vent 3 and air intake vent 4.The air (air outlet 3 and air outlet 4) directly discharging heating when the top without the need to adding heat radiator from the spatial accommodation of radiator guaranteed by the fin 9 tilted.
In bottom-right group 7 of radiator, observe symmetrical behaviour.
5, in 6 and 7 three groups, respective air duct 11,12 and 13 is independent of one another, and the air-flow like this in these three groups is by correspondingly decoupling zero.
Therefore, be divided into three groups according to the radiator of the present embodiment of the present invention, the air duct in these three groups and air-flow separate, and the impact of temperature sequence reduce.Air themperature in the channel on top declines, and total cooling capacity of HS improves about 10%.
In the present embodiment, fin in second group 69 and longitudinal axis Y are β angular slope, and the direction of the fin 8 of first group 5 is consistent with Y direction.Fin 10 in 3rd group 7 is α angular slope with longitudinal axis Y.In the illustrated embodiment, α angle is substantially equal with β angle, but should be appreciated that usually is not this situation, and it is contemplated that according to the asymmetric design of radiator of the present invention and fall within the scope of this specification.Similarly, Y-axis symmetry may be not in relation to according to radiator of the present invention, as shown in Figure 4.
Basic conception of the present invention can be implemented by other embodiments various except embodiment shown in Fig. 4.Therefore, alternate embodiment is shown in Figure 5.In this embodiment, radiator 1 is divided into two groups: group 14 above, and wherein fin 16 is vertical (as shown in the figure) and group 15 below, and wherein fin 18 and Y-axis are that γ angle extends to the upper right side of radiator sideling.Or the fin 18 in group 15 below can flow to the upper left side of radiator sideling.
In superincumbent group 14, air is provided to passage 17 from the front end of radiator by air intake vent 1 and air intake vent 2, and vertical fin 16 boots up air, and hot-air is flowed out by air outlet 1 and 2.
In group 15 below, air flows through the passage 19 in group 15 below by the air intake vent 4 bottom the air intake vent 3 on the radiator left side and radiator.The fin 18 tilted guarantees that the air of the heating of the bottom from radiator is not reduced the cooling capacity on top by drawing the spatial accommodation of radiator.
Air duct 17 and 19 respective in two group 14 and 15 is separate, thus air-flow is separate in these two parts.
Although describe the teaching of the application for purpose of explanation in detail, should be appreciated that, this type of details is just in order to described object, and when not departing from the scope of teaching of the present invention, those skilled in the art can carry out various amendment.
The term used in appended claims " comprises " does not get rid of other element or step.The term " one " used in appended claims is not got rid of multiple.Single processor or other unit can realize the function of the some components enumerated in claim.
Claims (12)
1. one kind comprises multiple fin (8,9,10) radiator, arrange that described multiple fin makes to form passage (11 between adjacent fins, 12,13), described passage (11,12,13) include air port and air outlet, it is characterized in that, described radiator comprises at least two groups (5,6,7) fin (8,9,10), arrange that described two groups of fins make the difference of the described air outlet of the position of the described air intake vent of the described passage of group described in first (5) and the described passage of residue described group (6,7).
2. radiator according to claim 1, it is characterized in that, arrange that described fin makes the longitudinal direction of the longitudinal direction of the described fin (8) of described first group (5) and the described fin (9) of described second group (6) be that β angle extends, wherein β ≠ 0 degree.
3. radiator according to claim 1 and 2, is characterized in that, the length of the described fin (8) of described first group (5) is along with the function of the distance between each fin (8) and the longitudinal axis Y of described radiator.
4. radiator according to claim 1 and 2, it is characterized in that, described radiator comprises three described group (5,6,7) fin (8,9,10), arrange that described three groups of fins make the described fin (8) of first (5) described group extend in parallel with the longitudinal axis Y of described radiator substantially, the described fin (9) of second (6) described group and the longitudinal axis Y of described radiator be that β angle extends, and the 3rd (7) described groups described fin (10) and the longitudinal axis Y of described radiator be that α angle extends.
5. radiator according to claim 4, is characterized in that, described α angle equals described β angle substantially.
6. radiator according to claim 4, is characterized in that, described α angle is different from described β angle.
7. the radiator according to claim 4,5 or 6, is characterized in that, 0 ° of < α <90 ° and 0 ° of < β <90 °.
8. radiator according to claim 1 and 2, it is characterized in that, described radiator comprises two described group (14,15) fin (16,18), arrange that described two groups of fins make the described fin (16) of first (14) described group extend in parallel with the longitudinal axis Y of described radiator substantially, and the described fin (18) of second (15) described group is that γ angle extends with the longitudinal axis Y of described radiator.
9. radiator according to claim 8, is characterized in that, 0 ° of < γ <90 °.
10. one kind has the long-distance radio frequency unit as the radiator in any one in aforementioned claim 1 to 9.
11. long-distance radio frequency units according to claim 9, it is characterized in that, described radiator is arranged and is made when described long-distance radio frequency unit is in its operating state on described long-distance radio frequency unit, described first group of (5) fin is vertically positioned at the top of remaining set (6,7) fin.
12. 1 kinds of cooling heat producing equipment (such as, long-distance radio frequency unit) method, it is characterized in that, described method comprises the gas channel providing at least two groups and described heating equipment to keep thermo-contact, each passage has inlet air region and air-out region, the position in described inlet air region of described passage of wherein said first group and the different of the described air-out region of the described passage of described remaining set, make the hot-air left by the described air-out region of described remaining set be prevented from being entered by described first group of respective inlet air region the described passage of described first group.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/067176 WO2015022032A1 (en) | 2013-08-16 | 2013-08-16 | Enhanced structure for natural cooling heat sink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105453257A true CN105453257A (en) | 2016-03-30 |
| CN105453257B CN105453257B (en) | 2018-12-07 |
Family
ID=49003767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380078759.5A Active CN105453257B (en) | 2013-08-16 | 2013-08-16 | Enhancing structure for natural cooling radiator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105453257B (en) |
| WO (1) | WO2015022032A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369674A (en) * | 2016-09-14 | 2017-02-01 | 赵耀华 | Novel hybrid-driven energy-saving air conditioning terminal |
| WO2023226165A1 (en) * | 2022-05-27 | 2023-11-30 | 成都天锐星通科技有限公司 | Communications-on-the-move antenna and vehicle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107105595A (en) * | 2016-02-19 | 2017-08-29 | 恩佐科技股份有限公司 | Low blast demand, low noise, dynamical radiator are reached using radiator arrangement |
| WO2021148140A1 (en) * | 2020-01-24 | 2021-07-29 | Huawei Technologies Co., Ltd. | A heatsink with increased air flow |
| WO2023161445A1 (en) * | 2022-02-28 | 2023-08-31 | Telefonaktiebolaget Lm Ericsson (Publ) | Heat sink |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125319A (en) * | 1994-09-19 | 1996-06-26 | 摩托罗拉公司 | A pneumatically coupled heat sink assembly |
| WO1999027761A1 (en) * | 1997-11-21 | 1999-06-03 | Muuntolaite Oy | Cooling element for an unevenly distributed heat load |
| WO2010025596A1 (en) * | 2008-09-08 | 2010-03-11 | Abb Technology Ltd | Heat sink |
| CN101754644A (en) * | 2008-12-01 | 2010-06-23 | 华为技术有限公司 | Radiating device, radiator and equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6668915B1 (en) * | 1999-09-28 | 2003-12-30 | Peter Albert Materna | Optimized fins for convective heat transfer |
| WO2010121428A1 (en) * | 2009-04-23 | 2010-10-28 | Sapa Profiles Holding Ab | Method of manufacturing heatsink with angled fins |
-
2013
- 2013-08-16 WO PCT/EP2013/067176 patent/WO2015022032A1/en active Application Filing
- 2013-08-16 CN CN201380078759.5A patent/CN105453257B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125319A (en) * | 1994-09-19 | 1996-06-26 | 摩托罗拉公司 | A pneumatically coupled heat sink assembly |
| WO1999027761A1 (en) * | 1997-11-21 | 1999-06-03 | Muuntolaite Oy | Cooling element for an unevenly distributed heat load |
| WO2010025596A1 (en) * | 2008-09-08 | 2010-03-11 | Abb Technology Ltd | Heat sink |
| CN101754644A (en) * | 2008-12-01 | 2010-06-23 | 华为技术有限公司 | Radiating device, radiator and equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369674A (en) * | 2016-09-14 | 2017-02-01 | 赵耀华 | Novel hybrid-driven energy-saving air conditioning terminal |
| WO2023226165A1 (en) * | 2022-05-27 | 2023-11-30 | 成都天锐星通科技有限公司 | Communications-on-the-move antenna and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105453257B (en) | 2018-12-07 |
| WO2015022032A1 (en) | 2015-02-19 |
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