CN103857259B - Backflow prevention device, heat dissipation device having backflow prevention device and electronic equipment having backflow prevention device - Google Patents
Backflow prevention device, heat dissipation device having backflow prevention device and electronic equipment having backflow prevention device Download PDFInfo
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- CN103857259B CN103857259B CN201210499701.5A CN201210499701A CN103857259B CN 103857259 B CN103857259 B CN 103857259B CN 201210499701 A CN201210499701 A CN 201210499701A CN 103857259 B CN103857259 B CN 103857259B
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- backflow prevention
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Abstract
The invention is applicable to the technical field of electronic equipment structure, and discloses a backflow prevention device, a heat dissipation device having the backflow prevention device and a piece of electronic equipment having the backflow prevention device. The backflow prevention device comprises a base and a backflow prevention blade group. The backflow prevention blade group includes a plurality of blades which can be oppositely folded and unfolded, the roots of the blades are rotatably connected to the base, and the blades are arranged annularly. Each blade is overlapped with an adjacent blade sequentially along the direction of annular arrangement of the blades. The heat dissipation device comprises a fan and the backflow prevention device. The electronic equipment comprises a case and a fan, and the backflow prevention device is arranged in the air outlet direction of the fan. According to the backflow prevention device, the heat dissipation device having the backflow prevention device and the electronic equipment having the backflow prevention device, the backflow prevention device has the advantages of small wind supply resistance, low noise and high reliability.
Description
Technical field
The invention belongs to electronic devices structure technical field, more particularly, to a kind of back-flow preventer and there is this anti-return dress
The heat abstractor put and electronic equipment.
Background technology
Various electronic devices and components are comprised, in equipment work process, these electronic devices can produce heat in electronic equipment,
Device temperature is led to raise.When device temperature exceedes certain value, it will led to cause thermal damage or dysfunction.Therefore, it is necessary to
Take the suitable type of cooling, the operating temperature of device is controlled in OK range.
At present, modal cold and hot mode is air-cooled it is simply that installing fan in equipment cabinets, drives air to flow through device
（Or its radiator）Heating surface, by heat convection by device heating pass to air discharge cabinet.
In order to obtain larger cooling air delivery, generally need to be using the radiating in parallel of multiple fans.This radiating mode leads to
Often face the risk of single fan fails., in this kind equipment, generally adopt fan blowing radiating taking rack-mount server as a example,
Each fan is substantially the device to its direct downstream and provides radiating, once having single fan fails, under inefficacy fan is direct
The device of trip can cannot get enough cooling air-flows, thus meeting with heat dissipation problem；More seriously, due to the device in fan downstream
Area's gas-flow resistance is larger, and after fan fails stall, air that adjacent fans are sent can select less reverses through gas-flow resistance
Inefficacy fan, thus be adjacent between fan in inefficacy fan causing air flow shortcircuit, further result in fan downstream components
The cooling air delivery in area reduces, and causes greater area of heat dissipation problem.
In prior art, the conventional solution for single fan fails is using double-deck fan replacing single-layer fan, double
The probability that two fans of layer lost efficacy simultaneously is much smaller, but this scheme can make number of fans and power consumption all double,
Application cost is very high, power consumption is high, noise is big, and can not fundamentally prevent the impact of single fan fails.
In addition, also having in prior art using flap type back-flow preventer and film type back-flow preventer.
Flap type back-flow preventer its be primarily present its own shortcomings：
1st, in the air-out area that blade is in fan after unlatching, air channel can be blocked, increase the fan resistance of fan.
2nd, blade can be shaken, and air-flow can cause regenerated noise through out-of-date.
Film type back-flow preventer its be primarily present its own shortcomings：
1st, in the air-out area that thin film blade is still within fan after unlatching, air channel can be blocked, increase the air-supply of fan
Resistance.
2nd, when wind speed is higher, thin film blade bears large wind effect, and easily tear was lost efficacy.
3rd, fan is periodic rotation air-out, and thin film blade material is lighter, easily produces the noise of irregularities.
To sum up, back-flow preventer of the prior art, it is primarily present, and fan resistance is big, noise is big, poor reliability scarce
Point.
Content of the invention
It is an object of the invention to overcoming above-mentioned the deficiencies in the prior art, there is provided a kind of back-flow preventer and have this prevent
The heat abstractor of reflux and electronic equipment, its back-flow preventer fan resistance is little, noise is little, reliability is high.
In a first aspect, the invention provides a kind of back-flow preventer, including base and anti-return blade group, described anti-return
Blade group includes multiple blades that can draw in opposite directions and launch, and the root of described blade is rotationally connected with described base, and each institute
State blade circular array；Along the direction of described blade annular array, each described blade overlaps setting with adjacent blade successively.
In conjunction with a first aspect, as the first mode in the cards, described blade has the first blade face and the second blade face,
First blade face of one of blade is overlapped in the second blade face of the blade of side adjacent with this blade, the second blade face of this blade
It is overlapped in the first blade face of the blade of opposite side adjacent with this blade.
In conjunction with a first aspect, as second mode in the cards, described back-flow preventer also includes rotating connector,
Described blade is rotationally connected with described base by described rotating connector.
In conjunction with second mode in the cards, as the third mode in the cards, described rotating connector is hinge
Chain, described hinge includes body and rotating shaft, and described body is fixedly connected on described base, described body be provided with multiple, multiple
Described body annular array setting, described rotary shaft is connected to described body, and the root of described blade is connected to described rotary shaft.
In conjunction with the third mode in the cards, as the 4th kind of mode in the cards, ringwise, it is solid for described rotating shaft
Surely it is connected on the body of each annular array.
In conjunction with the third mode in the cards, as the 5th kind of mode in the cards, the root one of described blade
Form sleeve part, described sleeve part is sheathed in described rotating shaft.
In conjunction with mode in the cards arbitrary in first aspect and the first to five kind, as the 6th kind of side in the cards
Formula, the transverse section of described blade is curved.
In conjunction with mode in the cards arbitrary in first aspect and the first to five kind, as the 7th kind of side in the cards
Formula, along the other end of the root extremely described blade of described blade one end, the width of described blade is gradually incremented by.
In conjunction with mode in the cards arbitrary in first aspect and the first to five kind, as the 8th kind of side in the cards
Formula, is provided with the elastic component for making described mounted blade on described hinge or on described base.
In conjunction with mode in the cards arbitrary in first aspect and the first to five kind, as the 9th kind of side in the cards
Formula, is provided with silencing apparatus in the space that described back-flow preventer base blade group is formed after drawing in.
Second aspect, the invention provides a kind of heat abstractor, including fan, the air-out direction of described fan is provided with
Any one described back-flow preventer in first aspect and the first to nine kind of mode in the cards.
The third aspect, the invention provides a kind of electronic equipment, including cabinet, the ministry of electronics industry that is arranged in described cabinet
Part, the fan for electronic unit radiating, the air-out direction of described fan is provided with first aspect and the first to nine kind of possibility
Any one described back-flow preventer in the mode realized.
Back-flow preventer provided by the present invention and heat abstractor and the electronic equipment with this back-flow preventer, it is prevented back
Blade in stream device gathers fan HUB area after closing up, not in the air-out area of fan, thus without blocking air channel, no
The fan resistance of fan can be increased, energy consumption is low；The reproduced air-flow noise that blade shake causes also can be avoided；In addition, Leave gathering
Can have certain guide functions in HUB area, thus lifting fan performance.And, blade is hardly damaged inefficacy, structural reliability
High.
Brief description
Fig. 1 is schematic perspective view when each blade draws in back-flow preventer provided in an embodiment of the present invention；
Fig. 2 is schematic perspective view during each mounted blade in back-flow preventer provided in an embodiment of the present invention；
Fig. 3 is schematic perspective view when each blade draws in back-flow preventer provided in an embodiment of the present invention；
Fig. 4 is schematic perspective view during each mounted blade in back-flow preventer provided in an embodiment of the present invention；
Fig. 5 is that the fitting plane of a blade and a hinge in back-flow preventer provided in an embodiment of the present invention is illustrated
Figure；
Fig. 6 is the three-dimensional signal of assembling of a blade and a hinge in back-flow preventer provided in an embodiment of the present invention
Figure；
Fig. 7 is the assembling schematic perspective view of base and hinge in back-flow preventer provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
As depicted in figs. 1 and 2, a kind of back-flow preventer provided in an embodiment of the present invention, including base 1 and anti-return blade
Group（In figure does not mark）, anti-return blade group includes multiple blades 2 that can draw in opposite directions and launch, and the root of blade 2 rotates even
It is connected to base 1, and each blade 2 circular array；Along the direction of blade 2 annular array, each blade 2 successively with adjacent blade 2
Overlapping setting.It is arranged symmetrically by along the circumferential direction partly overlapping multiple blades 2 successively, promote any of which blade 2 all may be used
Drive other blades to form dominoes formula rollover effect, by the gathering and expansion of blade 2, air flow passage is formed
On-off action.
Back-flow preventer may be disposed on the air-out direction of fan.Fan can be aerofoil fan etc..In the present embodiment, by wind
The air-out direction of fan is defined as front.Fan has HUB area, and so-called HUB area refers to be used on fan installing motor and controls electricity
The central area on road, i.e. the hub area of fan centre.In concrete application, base 1 may be disposed at the HUB area of fan.In wind
When fanning normal air-out, blade 2 is subject to positive wind, overturns to fan central shaft and is brought together in front of HUB area, does not disturb fan to go out
Wind, may also operate as guide functions, thus lifting corresponding fan performance.If certain fan fails, blade 2 be subject to reverse wind-force or
Under self gravitation effect, overturn and along fan radial development, be covered in fan outlet air surface, can effectively prevent the air-out of adjacent fans
Backflow.In the air-out area that blade 2 is not at fan after unlatching, more will not block air channel, beneficial to the air-supply reducing fan
Resistance, and form 2 groups of the blade of linkage because each blade 2 partly overlaps, adjacent blades 2 are mutually spacing, it is to avoid blade 2 exists
Shake during fan work, thus having prevented regenerated noise.In addition, blade 2 is typically made using plastic sheet or sheet metal, it has
Certain intensity, is difficult tear damage, reliability is high, and blade 2 material, relative to film material weight, will not produce irregularities
Noise.
Specifically, as depicted in figs. 1 and 2, each blade 2 is respectively provided with the first blade face 201 and the second blade face 202.The present embodiment
In, when each blade 2 draws in circlewise in opposite directions, the first blade face 201 is defined as toward the one side of ring center with blade 2, another
Face is then the second blade face 202.The first blade face 201 side part of one of blade 2a is overlapped in side adjacent with this blade 2a
Blade 2b the second blade face 202, the second blade face 202 side part of this blade 2a is overlapped in opposite side adjacent with this blade 2a
Blade 2c the first blade face 201.So, each blade 2 defines the arrangement architecture of dominoes formula, to any of which blade
The rotary action of 2 applyings can be delivered to other blades 2 and drive other blades the rotation of same trend to occur, thus ensureing leaf
Piece 2 can completely draw in and launch.
Specifically, as shown in Figure 3 and Figure 4, back-flow preventer also includes rotating connector 3, and blade 2 passes through rotating connector
3 are rotationally connected with base 1.
Specifically, as shown in Fig. 1, Fig. 5 and Fig. 6, rotating connector 3 is hinge, and hinge includes body 31 and rotating shaft 32, this
Body 31 is fixedly connected on base 1, body 31 and rotating shaft 32 be provided with multiple, as shown in figs. 4 and 7, multiple bodies 31 annular rows
Row setting, rotary shaft is connected to body 31, and each blade 2 corresponds to a rotating shaft 32, and each rotating shaft 32 corresponds to a body
31.The root of blade 2 is connected to rotary shaft.So that blade 2 can reliably respect thereto 1 rotate.It will of course be understood that ground,
Rotating connector 3 can also be the part such as rotating pin or hinge, or, blade 2 can also directly be rotationally connected with base 1
On.
As shown in Fig. 1, Fig. 5 and Fig. 6, body 31 offers fixing hole 311, in order to lock body 31 by locking member
Tightly on base 1.Locking member can be screw or rivet etc..It is of course also possible to weld or be integrally formed etc. appropriate parties by bonding
Body 31 is connected by formula with base 1.
Or, ringwise, it is fixedly connected on the body 31 of each annular array for rotating shaft 32.So, rotating shaft 32 can one
It is shaped to annular, be easy to assemble.Certainly, rotating shaft 32 can also be curved, and is spliced into by two or many arc rotating shafts 32
One circular rotating shaft 32.
Specifically, as shown in Figure 5 and Figure 6, integrally formed with sleeve part 21, sleeve part 21 is sheathed on and turns the root of blade 2
On axle 32.In concrete application, rotating shaft 32 is securable on body 31, and sleeve part 21 is movable to be sheathed on rotating shaft 32.Or sleeve
Portion 21 fixation is placed on rotating shaft 32, and rotating shaft 32 is rotationally connected with body 31.Or, sleeve part 21 turning set, located at rotating shaft 32, turns
Axle 32 is rotationally connected with body 31.It will of course be understood that, the root of blade 2 also can directly be rotationally connected with body 31.
In the present embodiment, hinge is two-part structure, and one section is arranged on base 1, one section of part as blade 2,
Combine for two sections and constitute being rotatably connected between blade 2 and base 1.
Specifically, as shown in figure 5, the transverse section of blade 2 is curved, drawing in and launching with all of blade 2 of enough guarantees
Rotation process in will not produce conflict, interfere and stuck, and after blade 2 launches, the mutual overlapping part of blade 2 can preferably
Blocking-up return air plenums, anti-return effect is good.It will of course be understood that, blade 2 may be arranged as other structures shape
Formula.
Specifically, as shown in Figure 5 and Figure 6, along blade 2 one end root to blade 2 the other end, the width of blade 2 by
Gradually it is incremented by, so that each blade 2 can smoothly draw in and launch.
In the present embodiment, blade 2 is in have the fan-shaped flake shape of certain radian, can be by its underpart hinge around being arranged on bottom
Rotary shaft 32 on seat 1 rotates.By blade 2 being designed with certain radian it is ensured that blade 2 closes up and exhibition in rotation
Conflict will not be produced and stuck, structural reliability height in open procedure.
Specifically, base 1 can the suitable shape such as in disk form or patty, it is simultaneously used for connecting blade 2, and another side can
For being connected with fan.In concrete application, the profile of base 1 can be rectangular, offers the perforate for flowing through for air-flow thereon,
The central area of base 1 can be connected to the HUB area of fan, the region of the corresponding above-mentioned pore of flabellum of fan.
As shown in figure 1, base 1 may include framework 11, base 1 and framework 11 can pass through dowel（In figure is not shown）Connect
It is integrated, in order to by base 1 integral installation fan.In concrete application, locking hole can also be opened up on the frame 11, to adopt
Passed through with locking members such as screws and be fixed on fan in locking hole and by framework 11.Certainly, framework 11 can also be the one of fan
Part.
Or, on hinge or on base 1, it is provided with the elastic component for making blade 2 launch（In figure is not shown）.Elasticity
Part can be spring or shell fragment etc., to ensure that fan fails rear blade 2 can smoothly launch.Fan by each blade 2 be blown to draw in
The elastic force of elastic component during fan center region, need to be overcome.After fan fails rotate stopping, each blade 2 is in the effect of elastic component
Lower expansion resets, and to keep being laid on the exhaust passage of fan, has blocked the exhaust passage of fan, has served the effect of anti-return,
Still prevent outside debris and enter exhaust passage.
Or, silencing apparatus can be arranged on this back-flow preventer base 1（In figure is not shown）, gone out with playing reduction fan
The effect of wind noise.In concrete application, in the space of formation after base 1 blade 2 draws in, the suction of the porous such as foam can be set
Sound material.
The embodiment of the present invention additionally provides a kind of heat abstractor, including fan, the air-out direction of fan is provided with above-mentioned
Back-flow preventer.It is to be appreciated that fan can be provided with one, two or more, correspondingly, back-flow preventer also can set
Be equipped with one, two or more.
The embodiment of the present invention additionally provides a kind of electronic equipment, including cabinet, the electronic unit being arranged in cabinet, is used for
The fan of electronic unit radiating, the air-out direction of fan is provided with above-mentioned back-flow preventer.
The back-flow preventer that the embodiment of the present invention is provided, its blade 2-in-1 hold together after gather fan HUB area, not in fan
Air-out area in, thus without block air channel, the fan resistance of fan will not be increased, energy consumption is low；Blade 2 also can be avoided to shake
The reproduced air-flow noise causing；In addition, blade 2 is gathered in HUB area can have certain guide functions, thus lifting fan performance.
And, blade 2 is hardly damaged inefficacy, and structural reliability is high.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Any modification, equivalent or improvement of being made within principle etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of back-flow preventer is it is characterised in that be arranged on the air-out direction of fan, including base and anti-return blade
Group, described anti-return blade group includes multiple blades that can draw in opposite directions and launch, and the root of described blade is rotationally connected with institute
State base, and each described blade circular array；Along the direction of described blade annular array, each described blade successively with adjacent
Blade overlaps setting, and described base is arranged at the hub area of the centre of fan, and during the normal air-out of fan, described blade is aweather
Fan central shaft overturns and is brought together in front of described hub area, does not disturb fan air-out, and during fan fails, described blade overturns simultaneously
Along fan radial development, it is covered in fan outlet air surface, prevent the air-out of adjacent fans from flowing back.
2. back-flow preventer as claimed in claim 1 is it is characterised in that described blade has the first blade face and the second blade face,
First blade face of one of blade is overlapped in the second blade face of the blade of side adjacent with this blade, the second blade face of this blade
It is overlapped in the first blade face of the blade of opposite side adjacent with this blade.
3. back-flow preventer as claimed in claim 1 is it is characterised in that described back-flow preventer also includes rotating connector,
Described blade is rotationally connected with described base by described rotating connector.
4. back-flow preventer as claimed in claim 3 it is characterised in that described rotating connector be hinge, described hinge bag
Include body and rotating shaft, described body is fixedly connected on described base, described body is provided with multiple, multiple described body annular rows
Row setting, described rotary shaft is connected to described body, and the root of described blade is connected to described rotary shaft.
5. back-flow preventer as claimed in claim 4 it is characterised in that described rotating shaft ringwise, it is fixedly connected on each ring
On the body of shape arrangement.
6. back-flow preventer as claimed in claim 4 is it is characterised in that the root of described blade is integrally formed with sleeve part,
Described sleeve part is sheathed in described rotating shaft.
7. the back-flow preventer as any one of claim 1 to 6 is it is characterised in that the transverse section of described blade is in arc
Shape.
8. the back-flow preventer as any one of claim 1 to 6 is it is characterised in that root along described blade one end
To the other end of described blade, the width of described blade is gradually incremented by.
9. the back-flow preventer as any one of claim 4 to 6 is it is characterised in that on described hinge or described bottom
Elastic component for making described mounted blade is provided with seat.
10. the back-flow preventer as any one of claim 1 to 6 is it is characterised in that on described back-flow preventer base
It is provided with silencing apparatus in the space that blade group is formed after drawing in.
A kind of 11. heat abstractors, including fan it is characterised in that arranging just like claim 1 on the air-out direction of described fan
Back-flow preventer any one of to 10.
12. a kind of electronic equipments, the electronic unit including cabinet, being arranged in described cabinet, the wind for electronic unit radiating
Fan is it is characterised in that arrange on the air-out direction of described fan just like the anti-return dress any one of claim 1 to 10
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210499701.5A CN103857259B (en) | 2012-11-28 | 2012-11-28 | Backflow prevention device, heat dissipation device having backflow prevention device and electronic equipment having backflow prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210499701.5A CN103857259B (en) | 2012-11-28 | 2012-11-28 | Backflow prevention device, heat dissipation device having backflow prevention device and electronic equipment having backflow prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103857259A CN103857259A (en) | 2014-06-11 |
| CN103857259B true CN103857259B (en) | 2017-02-22 |
Family
ID=50864310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210499701.5A Active CN103857259B (en) | 2012-11-28 | 2012-11-28 | Backflow prevention device, heat dissipation device having backflow prevention device and electronic equipment having backflow prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103857259B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107822236B (en) * | 2017-11-23 | 2024-04-09 | 航宇救生装备有限公司 | Neck support headgear that can be used to isolated protective clothing |
| TWI647997B (en) * | 2018-02-14 | 2019-01-11 | 緯創資通股份有限公司 | Backflow prevention device and server system using same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767182A (en) * | 2004-10-26 | 2006-05-03 | 台达电子工业股份有限公司 | Heat radiation assembly and its flow direction control structure |
| US7918651B2 (en) * | 2006-07-21 | 2011-04-05 | Delta Electronics, Inc. | Fan and impeller thereof |
| CN202348782U (en) * | 2011-09-30 | 2012-07-25 | 百度在线网络技术（北京）有限公司 | Anti-backflow radiating device |
-
2012
- 2012-11-28 CN CN201210499701.5A patent/CN103857259B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767182A (en) * | 2004-10-26 | 2006-05-03 | 台达电子工业股份有限公司 | Heat radiation assembly and its flow direction control structure |
| US7918651B2 (en) * | 2006-07-21 | 2011-04-05 | Delta Electronics, Inc. | Fan and impeller thereof |
| CN202348782U (en) * | 2011-09-30 | 2012-07-25 | 百度在线网络技术（北京）有限公司 | Anti-backflow radiating device |
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| Publication number | Publication date |
|---|---|
| CN103857259A (en) | 2014-06-11 |
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