CN101676569A - Heat sink and centrifugal fan applied by same - Google Patents

Heat sink and centrifugal fan applied by same Download PDF

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Publication number
CN101676569A
CN101676569A CN200810304561A CN200810304561A CN101676569A CN 101676569 A CN101676569 A CN 101676569A CN 200810304561 A CN200810304561 A CN 200810304561A CN 200810304561 A CN200810304561 A CN 200810304561A CN 101676569 A CN101676569 A CN 101676569A
Authority
CN
China
Prior art keywords
exhaust outlet
centrifugal cutter
projection
air
air outlet
Prior art date
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
CN200810304561A
Other languages
Chinese (zh)
Inventor
黄清白
赵志辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
Original Assignee
Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hong Jun Precision Industry Co ltd, Fuzhun Precision Industry Shenzhen Co Ltd filed Critical Hong Jun Precision Industry Co ltd
Priority to CN200810304561A priority Critical patent/CN101676569A/en
Priority to US12/489,413 priority patent/US20100071875A1/en
Publication of CN101676569A publication Critical patent/CN101676569A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/422—Discharge tongues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/4246—Fan casings comprising more than one outlet
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
    • 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
    • H01L23/3672—Foil-like cooling fins or heat sinks
    • 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

Abstract

A heat sink comprises a centrifugal fan, a first fin group and a second fin group; the centrifugal fan comprises an impeller, a baseboard and a lateral wall surrounding the baseboard; the lateral wallis provided with a first air outlet and a second air outlet; the first fin group and the second fin group are respectively arranged at the first air outlet and the second air outlet; the air flow generated by the impeller is exhausted towards the first air outlet and the second air outlet; a lug is arranged between the first air outlet and the second air outlet; the lug extends from the exteriorof the centrifugal fan towards the interior of the centrifugal fan, changes the quantity of the air flow flowing out of the first air outlet and the second air outlet, guides the air flow towards thefirst fin group and the second fin group at the first air outlet and the second air outlet, thus ensuring the air bearing of the first fin group and the second fin group to be more even, enhancing utilization rate of fins and improving heat sinking effect.

Description

Sink and the centrifugal cutter that is adopted thereof
Technical field
The present invention relates to a kind of sink, particularly a kind of centrifugal cutter.
Background technique
Along with developing rapidly of computer industry, CPU pursues high-speedization, and the heat dissipation problem that multifunction and miniaturization are derived is more and more serious, and this is more outstanding in the narrow and small electronic equipment in inner spaces such as notebook computer.If the heats that electronic component produced such as CPU in the notebook computer can't be distributed timely and effectively, will greatly influence the service behaviour of electronic component, also can reduce the working life of electronic component simultaneously, therefore must dispel the heat to electronic component.
In computer, the normal heat radiation module of being made up of thermal conductor, heat pipe, radiating fin and centrifugal cutter that adopts is to electronic element radiating at present.Thermal conductor is attached on the electronic component heat that absorbs electronic component, and the heat transferred radiating fin that heat pipe absorbs thermal conductor, the air-flow that centrifugal cutter produces brush radiating fin and distribute with heat the most at last with radiating fin generation heat exchange.Therefore, the heat radiation module plays a part very important.
As shown in Figure 1, traditional heat radiation module 100 comprises a fan frame 90, one is contained in the rotor 98 in the fan frame 90, be formed into air port 95 on the fan frame 90, first exhaust outlet 91 and second exhaust outlet 92, this first exhaust outlet 91 and second exhaust outlet, 92 places are provided with first groups of fins 93 and second groups of fins 94 respectively, when rotor 98 rotates, the air-flow that produces blows to first, second groups of fins 93,94, flow field as shown in fig. 1, air-flow is big in the right side of first groups of fins 93, and the left side is little, and the air-flow that blows to second groups of fins 94 also is that downside is big, upside is little, air quantity distributes extremely uneven, has reduced the utilization ratio of radiating fin, has influenced the heat dispersion of heat radiation module 100.
Summary of the invention
In view of this, be necessary to provide a kind of air quantity ratio of optimizing, make centrifugal cutter that its heat dispersion effectively promoted and sink with this centrifugal cutter.
A kind of centrifugal cutter, comprise that impeller, base plate reach the sidewall around base plate, this sidewall is provided with the first adjacent exhaust outlet and second exhaust outlet, this impeller produces air-flow row to first exhaust outlet and second exhaust outlet, be provided with a projection between this first exhaust outlet and second exhaust outlet, this projection extends to the inside of centrifugal cutter along the outside of centrifugal cutter, and this projection changes the throughput and the air-flow that flow out first exhaust outlet and second exhaust outlet and distributes, and air-flow is derived from first exhaust outlet and second exhaust outlet.
A kind of sink, comprise a centrifugal cutter, first fins group and second fins group, this centrifugal cutter comprises an impeller, one base plate reaches the sidewall around base plate, this sidewall is provided with the first adjacent exhaust outlet and second exhaust outlet, first fins group and second fins group are located at this first exhaust outlet and the second exhaust outlet place respectively, this impeller produces air-flow row to first exhaust outlet and second exhaust outlet, be provided with a projection between this first exhaust outlet and second exhaust outlet, this projection extends to the inside of centrifugal cutter along the outside of centrifugal cutter, this projection changes the throughput and the air-flow distribution of flowing out first exhaust outlet and second exhaust outlet, with air-flow lead first fins group and second fins group at first exhaust outlet and the second exhaust outlet place.
Compared with prior art, projection has stopped the air-flow that partly flows to second fins group, makes it to flow out from first fins group, has increased the air quantity of first fins group of flowing through.Simultaneously also make the wind-engaging of first fins group more even, improved the utilization ratio of fin.In addition, flow to the stage casing that guide to second fins group of the air-flow of second fins group, make the wind-engaging of second fins group more even, improved the utilization ratio of fin, thereby promoted the heat dispersion of sink through projection.
Description of drawings
Fig. 1 is the flow field schematic representation of prior art heat radiation module.
Fig. 2 is the three-dimensional exploded view of sink preferred embodiment of the present invention.
Fig. 3 is the flow field schematic representation after Fig. 2 combination.
Fig. 4 is another embodiment's of fan frame schematic perspective view.
Embodiment
See also Fig. 2 and Fig. 3, this sink comprises a centrifugal cutter 10, one first fins group 20 and one second fins group 30.Centrifugal cutter 10 comprises an impeller 13, a top board 14, a base plate 11 relative with top board 14, and is located at the volute sidewall 12 between top board 14 and the base plate 11.
The top board 14 of centrifugal cutter 10, base plate 11 and sidewall 12 surround and constitute a fan frame, form a containing space in the fan frame, and impeller 13 is contained in this containing space.Top board 14 is provided with one first intake grill 15, base plate 11 is provided with one second intake grill 16, sidewall 12 extends and around base plate 11 vertically upward from the periphery of base plate 11, and sidewall 12 is provided with one first exhaust outlet 17 and one second exhaust outlet 18 adjacent with first exhaust outlet 17.First, second exhaust outlet 17,18 is shape linearly all, and vertical mutually the setting.First fins group 20 and corresponding respectively first exhaust outlet 17 and second exhaust outlet, 18 places of being arranged at of second fins group 30.First, second fins group 20,30 is built by some radiating fin heaps respectively and is formed, and its monnolithic case is consistent with first exhaust outlet 17 and second exhaust outlet 18 respectively.Upwards be convexly equipped with a projection 19 on the base plate 11 between first, second exhaust outlet 17,18, this projection 19 extends to the inside of fan frame along the outside of the fan frame of centrifugal cutter 10.Projection 19 is laminar body triangular in shape, its base level is located on this base plate 11, projection 19 is not more than the height of sidewall 12 greater than zero along centrifugal cutter 10 height on axially, projection 19 outermost end do not exceed the outermost end of centrifugal cutter 10, its inner terminal and distance between the impeller 13 in centrifugal cutter 10 inside is not less than 1 millimeter, so just can not influence the normal operation of impeller 13.The height of projection 19 reduces until being zero to the inside of centrifugal cutter 10 gradually from the outside of centrifugal cutter 10, projection 19 can with base plate 11 one-body molded making, be arranged on the base plate 11 after also can making separately.
During sink work, the heat that heat pipe (figure does not show) produces heater element conducts to first, second fins group 20,30 fast, first, second fins group 20,30 comes out heat by the bigger heat exchange area of fin, suck cold airflows from first intake grill 15 and second intake grill 16 during impeller 13 running of centrifugal cutter 10, blow to first fins group 20 of being located at first exhaust outlet 17 and second exhaust outlet, 18 places respectively and second fins group 30 so that the high temperature gas flow between fin is blown away through first exhaust outlet 17 and second exhaust outlet 18.Because it is roughly consistent with runner direction between fin to blow to the airflow direction on first fins group, 20 right sides, thereby the air-flow that flows to this place is stronger, then air-flow is stage casing and the left side that the center rotation blows to first fins group 20 with impeller 13, since the variation of air-flow angle make the stage casing that flows to first fins group 20 and left side air-flow a little less than, yet, when continuing to move ahead, air-flow meets stopping of projection 19, because the height of projection 19 successively decreases to inside from the outside of centrifugal cutter 10, thereby some air-flow crosses projection 19 and continues to blow to second fins group 30, turns to the left side of first fins group 20 after a part is blocked.
As shown in Figure 3, after increasing projection 19, the air quantity that flows to first fins group 20 and second fins group 30 has produced variation, the air quantity that first fins group 20 flows through except its right side still keep very big, because projection 19 has stopped that a part of air-flow turns to through the left side and the stage casing of first fins group 20 it and flows out, thereby its left side and the air quantity in stage casing obviously increase, and distribution uniform.Simultaneously, the air-flow that flows to second fins group 30 has been blocked a part by projection 19, and air-flow is changed by its direction of guiding of projection 19, make the former high wind that should flow through second fins group, 30 downsides be directed to its stage casing, the blowing area of second fins group 30 is increased, thereby it is more even that air quantity is distributed.Improve the utilization ratio of fin.In addition, because of projection 19 has stopped a part of air-flow, make the air quantity ratio of flow through first fins group 20 and second fins group 30 that variation take place, the air quantity of first fins group 20 of flowing through increases to some extent, the air quantity of second fins group 30 of correspondingly flowing through reduces relatively, so, we can be as required, main heater element or the bigger heat that element produced of heating value are conducted to first fins group 20, utilize its stronger heat dissipation potential to dispel the heat rapidly, and with heater element less important or that heating value is less and 30 hot connectings of second fins group, thereby optimize the heat radiation ratio, reach optimum radiating effect as required.
Fan frame 40 shown in Figure 4 comprises a base plate 41, around a sidewall 42 of base plate 41, and be located at a projection 49 on this base plate 41.Form first exhaust outlet 17 and second exhaust outlet 18 on the sidewall 42, projection 49 equally also is located at the intersection of first exhaust outlet 17 and second exhaust outlet 18, and the difference of this embodiment and the foregoing description is, this projection 49 is one to be the blocks of three terrace with edge shapes.The thickness of this projection 49 inwardly reduces gradually along the outside of fan frame 40, and the thickness of this projection 49 increases from the top down gradually on short transverse.This projection 49 comprises towards first side 44 of first exhaust outlet 17 with towards second side 46 of second exhaust outlet 18, this first side 44 all is skewed with second side, 46 relative base plates 41, intersect to an incline 45 in the inside of fan frame 40 these bi-side 44,46, and these incline 45 relative base plates 41 tilt.When air-flow blows to projection 49, impinge upon on first side 44, because first side, 44 relative base plates 41 are skewed, transition is comparatively mild, and the noise that airflow strikes produces on first side 44 reduces relatively, thus the noise the during use of reduction sink.

Claims (10)

1. centrifugal cutter, comprise that impeller, base plate reach the sidewall around base plate, this sidewall is provided with the first adjacent exhaust outlet and second exhaust outlet, this impeller produces air-flow row to first exhaust outlet and second exhaust outlet, it is characterized in that: be provided with a projection between this first exhaust outlet and second exhaust outlet, this projection extends to the inside of centrifugal cutter along the outside of centrifugal cutter, this projection changes the throughput and the air-flow that flow out first exhaust outlet and second exhaust outlet and distributes, and air-flow is derived from first exhaust outlet and second exhaust outlet.
2. centrifugal cutter as claimed in claim 1 is characterized in that: this projection is not more than the height of sidewall greater than zero along the height of centrifugal cutter on axially.
3. centrifugal cutter as claimed in claim 1 is characterized in that: the outermost end of this projection does not exceed the outermost end of centrifugal cutter, and this projection is not less than 1 millimeter in the inner terminal and the distance between the impeller of centrifugal cutter inside.
4. centrifugal cutter as claimed in claim 1 is characterized in that: this projection extends upward formation from base plate.
5. centrifugal cutter as claimed in claim 1 is characterized in that: this first exhaust outlet is vertical mutually with second exhaust outlet.
6. centrifugal cutter as claimed in claim 5 is characterized in that: this first exhaust outlet and second exhaust outlet be shape linearly all.
7. as any described centrifugal cutter in the claim 1 to 6, it is characterized in that: the height of this projection successively decreases towards the inside of centrifugal cutter along the outside of centrifugal cutter.
8. centrifugal cutter as claimed in claim 7 is characterized in that: this projection is a triangle lamellar body.
9. centrifugal cutter as claimed in claim 7, it is characterized in that: this projection is three terrace with edge shapes, this projection comprises towards first side of this first exhaust outlet with towards second side of this second exhaust outlet, intersect to an incline in the inside of centrifugal cutter this first side and second side, and the relative base plate of this incline tilts.
10. sink, comprise a centrifugal cutter, first fins group and second fins group, this centrifugal cutter comprises that an impeller, a base plate reach the sidewall around base plate, this sidewall is provided with the first adjacent exhaust outlet and second exhaust outlet, first fins group and second fins group are located at this first exhaust outlet and the second exhaust outlet place respectively, this impeller produces air-flow row to first exhaust outlet and second exhaust outlet, and it is characterized in that: this centrifugal cutter is any described centrifugal cutter in the claim 1 to 9.
CN200810304561A 2008-09-19 2008-09-19 Heat sink and centrifugal fan applied by same Pending CN101676569A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200810304561A CN101676569A (en) 2008-09-19 2008-09-19 Heat sink and centrifugal fan applied by same
US12/489,413 US20100071875A1 (en) 2008-09-19 2009-06-22 Heat dissipation device and centrifugal fan thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810304561A CN101676569A (en) 2008-09-19 2008-09-19 Heat sink and centrifugal fan applied by same

Publications (1)

Publication Number Publication Date
CN101676569A true CN101676569A (en) 2010-03-24

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US (1) US20100071875A1 (en)
CN (1) CN101676569A (en)

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CN102536860A (en) * 2012-01-11 2012-07-04 苏州聚力电机有限公司 Thin cross-flow fan with air outlet boosting effect
CN103294145A (en) * 2013-05-16 2013-09-11 合肥联宝信息技术有限公司 Fan unit and fan unit based heat radiation structure with fans on double sides of host computer
CN106194844A (en) * 2015-05-04 2016-12-07 全亿大科技（佛山）有限公司 Combination type fan
CN110118198A (en) * 2018-02-05 2019-08-13 华硕电脑股份有限公司 Centrifugal fan
CN115184564A (en) * 2022-09-09 2022-10-14 风云博维(深圳)科技有限公司 Atmosphere monitoring equipment

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US10539150B2 (en) * 2015-06-16 2020-01-21 Delta Electronics, Inc. Centrifugal fan with dual outlets in the same direction and fan frame thereof
EP3756430B1 (en) * 2018-05-31 2023-11-08 Hewlett-Packard Development Company, L.P. Thermal modules for electronic devices
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US10584717B1 (en) * 2019-04-25 2020-03-10 Dell Products, Lp Blower system with dual opposite outlets and fan diameter approaching to blower housing dimension for information handling systems
US11109509B2 (en) 2019-05-03 2021-08-31 Dell Products, Lp Cooling module with blower system having dual opposite outlets for information handling systems
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CN102536860A (en) * 2012-01-11 2012-07-04 苏州聚力电机有限公司 Thin cross-flow fan with air outlet boosting effect
CN103294145A (en) * 2013-05-16 2013-09-11 合肥联宝信息技术有限公司 Fan unit and fan unit based heat radiation structure with fans on double sides of host computer
CN106194844A (en) * 2015-05-04 2016-12-07 全亿大科技（佛山）有限公司 Combination type fan
CN106194844B (en) * 2015-05-04 2018-11-23 全亿大科技（佛山）有限公司 Combination type fan
CN110118198A (en) * 2018-02-05 2019-08-13 华硕电脑股份有限公司 Centrifugal fan
CN110118198B (en) * 2018-02-05 2021-03-02 华硕电脑股份有限公司 Centrifugal fan
CN115184564A (en) * 2022-09-09 2022-10-14 风云博维(深圳)科技有限公司 Atmosphere monitoring equipment
CN115184564B (en) * 2022-09-09 2022-11-29 风云博维(深圳)科技有限公司 Atmosphere monitoring equipment

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Application publication date: 20100324