CN1328645C - High-efficiency sound-absorbing aluminum extruded fin array - Google Patents
High-efficiency sound-absorbing aluminum extruded fin array Download PDFInfo
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- CN1328645C CN1328645C CNB2004100698433A CN200410069843A CN1328645C CN 1328645 C CN1328645 C CN 1328645C CN B2004100698433 A CNB2004100698433 A CN B2004100698433A CN 200410069843 A CN200410069843 A CN 200410069843A CN 1328645 C CN1328645 C CN 1328645C
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- radiating fin
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- heat sink
- oblique groove
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Abstract
一种消音铝挤型散热鰭片阵列，包括一基底，及直立于基底上的多片散热鰭片。散热鰭片彼此间具有间隙。每一散热鰭片以两个斜向沟槽区分为三片子散热鰭片，其中两个斜向沟槽所夹的子散热鰭片向间隙弯折。当气流吹过散热鰭片间的间隙时，会撞上弯折的子散热鰭片，使得流速分布，进而消除恼人的噪音。
A sound-absorbing aluminum extruded heat sink fin array includes a substrate and a plurality of heat sink fins standing upright on the substrate. There are gaps between the heat sink fins. Each heat sink fin is divided into three sub-heat sink fins by two oblique grooves, wherein the sub-heat sink fins sandwiched by the two oblique grooves are bent toward the gap. When airflow blows through the gaps between the heat sink fins, it will hit the bent sub-heat sink fins, so that the flow velocity is distributed, thereby eliminating annoying noise.
Description
Technical field
The present invention relates to a kind of high performance silence aluminum extrusion radiating fin array, particularly relate to a kind of high performance silence aluminum extrusion radiating fin array that is applied in the mobile computer.
Background technology
Along with the market demand of computing machine in response to slimming, mobile computer casing inside can't reserve enough natural convection spaces, for the required space of heat dissipation design.Especially at high-frequency component (for example central processing unit and drawing chip), faced the bottleneck that suitable heat dissipation design is carried out.Therefore, add the rotating speed of strong wind note fan, the average convection coefficient (Average convection co-efficiency) that improves between radiating fin and air has been the primary structure of present mobile computer cooling mechanism.
Figure 1A illustrates a kind of existing aluminium extruded type radiating fin array synoptic diagram.Existing aluminium extruded type radiating fin array 20 when air-flow 22 is blown over radiating fin, can produce the velocity flow profile 24 as parabolic flow (Poiseuille flow).This specific velocity flow profile 24 can produce the noise spectrum curve 26 as Figure 1B.The high point of spectrum curve 26a is high more to be easy to generate the influence of making us unhappy more.
In case need to improve heat dissipation, certainly will will increase air quantity (wind speed).Yet what the flow field increased will make, thereby cause the bottleneck that is difficult to accept or reject on noise and the heat radiation subject under discussion.How to solve the challenge that this awkward predicament has become mobile computer manufacturer to be about to face.
Summary of the invention
Therefore purpose of the present invention is providing a kind of high performance silence aluminum extrusion radiating fin array exactly, in order to solve the bottleneck that is difficult to accept or reject on noise and the heat radiation subject under discussion.
The object of the present invention is achieved like this, and promptly a kind of silence aluminum extrusion radiating fin array comprises at least: a substrate; The multi-disc radiating fin stands in this substrate; And at least one oblique groove, be positioned on each this each radiating fin, wherein this oblique groove separates the radiating fin of both sides, and the angle of this oblique groove and this substrate is less than 90 degree.
The present invention also provides a kind of silence aluminum extrusion radiating fin array, comprises at least: a substrate; The multi-disc radiating fin uprightly is located in this substrate, and has a gap to each other; And a plurality of oblique grooves, be located on every this each radiating fin, every this radiating fin is divided into the sub-radiating fin of multi-disc, the angle of this oblique groove and this substrate is less than 90 degree.
Synthetically say,, propose a kind of high-effect noise reduction silence aluminum extrusion radiating fin array according to above-mentioned purpose of the present invention.This silence aluminum extrusion radiating fin array comprises a substrate, and stands on suprabasil multi-disc radiating fin.Radiating fin has a gap to each other.Each radiating fin is divided into three slice, thin piece radiating fins with two oblique trench area, and wherein two folded sub-radiating fins of oblique groove bend to the gap.When air-flow is blown over gap between radiating fin, can knock the radiating fin of bending, make velocity flow profile, and then eliminate annoying noise.
From the above, use the aluminium extruded type radiating fin array with silencing function of the present invention, can not increase fin array volume, and with manufacture cheaply, can solve the bottleneck that is difficult to accept or reject on noise and the heat radiation subject under discussion.
Description of drawings
Figure 1A is a kind of existing aluminium extruded type radiating fin array synoptic diagram;
The noise spectrum distribution plan that Figure 1B is produced for a kind of existing aluminium extruded type radiating fin shown in Figure 1A;
Fig. 2 A is a kind of aluminium extruded type radiating fin array synoptic diagram of a preferred embodiment of the present invention;
Fig. 2 B is the noise spectrum distribution plan that a kind of aluminium extruded type radiating fin that is illustrated as Fig. 2 A is produced;
Fig. 3 is a kind of process flow diagram of making silence aluminum extrusion radiating fin of a preferred embodiment of the present invention.
Embodiment
In order to solve the bottleneck that is difficult to accept or reject on noise and the heat radiation subject under discussion, the present invention proposes a kind of high performance silence aluminum extrusion radiating fin array, on every in array radiating fin, cut out oblique groove, and make about the radiating fin that is positioned at before and after the oblique groove and diverge.This structure helps to change velocity flow profile, and then makes the noise spectrum curve also along with change.
Please refer to Fig. 2 A, it illustrates a kind of aluminium extruded type radiating fin array synoptic diagram according to a preferred embodiment of the present invention.Be different from existing aluminium extruded type radiating fin array, the aluminium extruded type radiating fin array 30 of this preferred embodiment, on every radiating fin, cut out a plurality of oblique grooves 38, it is good that the bearing of trend of oblique groove 38 is being shaped as of an inverted V-shape, make no matter the flow field is laminar flow (Laminar Flow) or sinuous flow (Turbulent Flow), the fixed flow rate that oblique groove 38 all can be upset in the pipe stream distributes, and obtains the comparatively noise of wideband distribution (Hay-stack).
In addition, oblique groove 38 (and distinguishing line 37) is divided into three sub-radiating fin 30a/30b/30c with every radiating fin.Wherein, sub-radiating fin 30b is an axle to distinguish line 37, and radiating fin tilts to bend an angle (based on radiating fin before and after not touching) forwards, backwards, makes sub-radiating fin 30a/30c diverge on position, the left and right sides.In other words, sub-radiating fin 30b bends in the gap of radiating fin forwards, backwards.When air-flow 32 is blown over gap between sub-radiating fin 30a, can knock the sub-radiating fin 30b of bending, make the flow field be revised as velocity flow profile 34, the present invention can be under the constant situation of runner basal area (just not changing under the situation of flow resistance), reverse V-shaped design by oblique groove 38, improve the average coefficient of heat convection, and obtain the noise that wideband distributes.Above-mentioned oblique groove 38 is through experimental result, and effect is preferable when oblique groove 38 is spent less than 90 with substrate 35 angle theta.
Please refer to Fig. 2 B, it illustrates the noise spectrum distribution plan that a kind of aluminium extruded type radiating fin that is illustrated as Fig. 2 A is produced.Be compared to the noise spectrum curve 26 of Figure 1B, the noise spectrum curve 36 that velocity flow profile 34 is produced, its spectrum curve high some 36a and 36 contrasts of whole noise spectrum curve relax many than noise spectrum curve 26.Thereby the aluminium extruded type radiating fin array 30 that confirms present embodiment has the function of high-effect noise reduction.
Please refer to Fig. 3, it illustrates a kind of process flow diagram of making silence aluminum extrusion radiating fin according to a preferred embodiment of the present invention.First step cuts out the oblique groove of twice 38 on an existing aluminium extruded type radiating fin 30, radiating fin is divided into three sub-radiating fins of 30a, 30b and 30c.Second step bends sub-radiating fin 30b by instrument (tool) 40.The direction of sub-radiating fin 30b bending can be (as Fig. 3 lower left subgraph) or (as Fig. 3 lower right subgraph) left to the right.
The V-type design of above-mentioned oblique groove 38, can increase and decrease to some extent according to the length of radiating fin array 30, if flow channel length is shorter, the groove angle θ of cutting can be big, if flow channel length is longer, the groove angle θ of cutting can be little, or, can increase the quantity of cutting groove, for example cut out the oblique groove 38 that is a W font.
By the invention described above preferred embodiment as can be known, use the aluminium extruded type radiating fin array with silencing function of the present invention, can not increase fin array volume, and with manufacture cheaply, can solve the bottleneck that is difficult to accept or reject on noise and the heat radiation subject under discussion.
Though disclosed the present invention in conjunction with an above preferred embodiment; yet it is not in order to qualification the present invention, any person skilled in the art, without departing from the spirit and scope of the present invention; can be used for a variety of modifications and variations, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (6)
1. silence aluminum extrusion radiating fin array comprises at least:
One substrate;
The multi-disc radiating fin stands in this substrate; And
At least one oblique groove is positioned on each this each radiating fin, and wherein this oblique groove separates the radiating fin of both sides, and the angle of this oblique groove and this substrate is less than 90 degree.
2. silence aluminum extrusion radiating fin array comprises at least:
One substrate;
The multi-disc radiating fin uprightly is located in this substrate, and has a gap to each other; And
A plurality of oblique grooves are located on every this each radiating fin, and every this radiating fin is divided into the sub-radiating fin of multi-disc, and the angle of this oblique groove and this substrate is less than 90 degree.
3. silence aluminum extrusion radiating fin array as claimed in claim 2, wherein this each sub-radiating fin one of them to the bending of this gap.
4. silence aluminum extrusion radiating fin array as claimed in claim 2, wherein this folded sub-radiating fin of this each oblique groove bends to this gap.
5. silence aluminum extrusion radiating fin array as claimed in claim 2, wherein the bearing of trend of this each oblique groove is V-shape design.
6. silence aluminum extrusion radiating fin array as claimed in claim 2, wherein the bearing of trend of this each oblique groove is W font design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100698433A CN1328645C (en) | 2004-07-14 | 2004-07-14 | High-efficiency sound-absorbing aluminum extruded fin array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100698433A CN1328645C (en) | 2004-07-14 | 2004-07-14 | High-efficiency sound-absorbing aluminum extruded fin array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1722056A CN1722056A (en) | 2006-01-18 |
| CN1328645C true CN1328645C (en) | 2007-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100698433A Expired - Fee Related CN1328645C (en) | 2004-07-14 | 2004-07-14 | High-efficiency sound-absorbing aluminum extruded fin array |
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| CN (1) | CN1328645C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI417499B (en) | 2010-12-07 | 2013-12-01 | 華碩電腦股份有限公司 | Heat sink |
| CN104596339B (en) * | 2014-12-31 | 2016-10-05 | 技嘉科技股份有限公司 | radiator structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5406451A (en) * | 1993-06-14 | 1995-04-11 | Comaq Computer Corporation | Heat sink for a personal computer |
| US5435384A (en) * | 1994-07-20 | 1995-07-25 | Wu; Chung | Heat dissipating plate |
| US5518071A (en) * | 1993-03-31 | 1996-05-21 | Lee; Yong N. | Heat sink apparatus |
| US5594623A (en) * | 1994-09-21 | 1997-01-14 | Hewlett-Packard Co | Method and apparatus for attaching a heat sink and a fan to an integrated circuit package |
| US6267178B1 (en) * | 1999-05-14 | 2001-07-31 | Yun-Ching Chen | Built-up heat exchanger |
| CN2535841Y (en) * | 2002-02-01 | 2003-02-12 | 郭瑞珍 | Computer radiator |
| CN2588530Y (en) * | 2002-11-08 | 2003-11-26 | 杨金凤 | Cooling device for computer central processing unit |
| US6735082B2 (en) * | 2002-08-14 | 2004-05-11 | Agilent Technologies, Inc. | Heatsink with improved heat dissipation capability |
-
2004
- 2004-07-14 CN CNB2004100698433A patent/CN1328645C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518071A (en) * | 1993-03-31 | 1996-05-21 | Lee; Yong N. | Heat sink apparatus |
| US5406451A (en) * | 1993-06-14 | 1995-04-11 | Comaq Computer Corporation | Heat sink for a personal computer |
| US5435384A (en) * | 1994-07-20 | 1995-07-25 | Wu; Chung | Heat dissipating plate |
| US5594623A (en) * | 1994-09-21 | 1997-01-14 | Hewlett-Packard Co | Method and apparatus for attaching a heat sink and a fan to an integrated circuit package |
| US6267178B1 (en) * | 1999-05-14 | 2001-07-31 | Yun-Ching Chen | Built-up heat exchanger |
| CN2535841Y (en) * | 2002-02-01 | 2003-02-12 | 郭瑞珍 | Computer radiator |
| US6735082B2 (en) * | 2002-08-14 | 2004-05-11 | Agilent Technologies, Inc. | Heatsink with improved heat dissipation capability |
| CN2588530Y (en) * | 2002-11-08 | 2003-11-26 | 杨金凤 | Cooling device for computer central processing unit |
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| Publication number | Publication date |
|---|---|
| CN1722056A (en) | 2006-01-18 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20070725 Termination date: 20190714 |