CN203590649U - Back-flow preventer - Google Patents
Back-flow preventer Download PDFInfo
- Publication number
- CN203590649U CN203590649U CN201320613595.9U CN201320613595U CN203590649U CN 203590649 U CN203590649 U CN 203590649U CN 201320613595 U CN201320613595 U CN 201320613595U CN 203590649 U CN203590649 U CN 203590649U
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- catch
- heat radiation
- spring
- rotating shaft
- fan
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Abstract
The utility model provides a back-flow preventer. A plurality of single boards nearby the fan frame side in the cabinet of a communication device are divided into a plurality of components. Each component is corresponding to one or more heat radiation module groups, and each heat radiation module group is corresponding to one component. In the normal condition, separation blades are opened to enable air to ventilate normally. When some heat radiation module group is failed, separation blades corresponding to the failed heat radiation module group are closed, only a small part of air flow passes through the corresponding component to ensure that the single boards meet heat radiation requirements.
Description
Technical field
The present invention relates to computer communication field, relate in particular to the back-flow preventer in a kind of case for communication equipment.
Background technology
In case for communication equipment, conventionally by a plurality of fans, jointly form cooling system.While organizing fan fails when certain or certain, this fan place can form recirculating zone, causes effective air channel of original design destroyed, and effective wind rate reduces, and then causes heat dissipation problem.
As shown in Figure 1A, under normal circumstances, when fan group turns round, the air quantity of heat radiation enters from the left side, and the right goes out, during through the veneer of components and parts being housed, take away the heat that on veneer, components and parts distribute.
As shown in Figure 1B, in fan group, during certain fan fails, in the position of inefficacy fan, have backflow approach, cause veneer A region blast to diminish, effective wind rate reduces, impact heat radiation.
In order to address the above problem, the major programme that prior art adopts is: on fan frame (as shown in Figure 1 C), or (as shown in Fig. 1 D) designs back-flow preventer on position corresponding to fan frame.When fan fails or when fan frame is pulled out, closed this return flow path, reduces invalid air quantity, thereby guarantees the heat radiation of service board.
Yet there is following shortcoming in existing scheme:
If the position near fan in cabinet needs repairing, such as the switching board near fan place needs to change, because the fan frame place in this inefficacy has designed back-flow preventer, therefore cannot safeguard or safeguard inconvenience.In addition, such scheme is owing to having stopped inlet air, by the switching board excess Temperature of the fan correspondence position that causes losing efficacy.
Summary of the invention
In view of this, the invention provides a kind of back-flow preventer, to solve problems of the prior art.
Particularly, the present invention is achieved by the following technical solutions:
A kind of back-flow preventer, be applied in a side of close heat radiation module in case for communication equipment, veneer near heat radiation module in described case for communication equipment is divided into several constituent elements, corresponding one or several heat radiation modules of each constituent element, the corresponding one group of constituent element of each heat radiation module, wherein, described device includes support and catch, under normal circumstances, catch is opened, and air normally circulates; When heat radiation module lost efficacy, closed to the catch of the module that should dispel the heat, allow constituent element corresponding to a small amount of airflow passes.
Further, described support includes the sub-stent equating with catch quantity, and one end of described catch is fixed on sub-stent, and the other end can carry out opening and closing around this end.
Further, described sub-stent length L 0, catch length L 1, wherein L1<L0, makes washer form backflow gap when closure and between sub-stent.
Further, described backflow gap is corresponding with the position of heat radiation key area.
Further, described stent length and catch are equal in length, on described catch, are provided with return port.
Further, the return port on described catch is corresponding with the position of heat radiation key area.
Further, described back-flow preventer also includes elastic device, and described elastic device includes spring, rotating shaft lever and pull bar, wherein,
One end of pull bar is connected with baffle plate, and the other end is connected with one end of rotating shaft lever;
One end of rotating shaft lever is connected with spring, the other end with spring contact;
When fan inserts, fan frame promotes rotating shaft lever Compress Spring, drives pull bar by the vertical pull-up of baffle plate, and catch is opened, and air channel is unimpeded; When fan is extracted, spring is upheld automatically, and catch is closed with sub-stent under the effect of automatic gravity, only has a small amount of wind to reflux.
Further, described back-flow preventer also includes elastic device, and described elastic device includes spring and rotating shaft pull bar, wherein,
Catch is fixed on rotating shaft pull bar, and described catch can horizontally rotate along with rotating shaft pull bar;
Spring, one end and cabinet are fixed, and the other end and catch are fixed;
When fan inserts, spring stress compression, horizontally rotates baffle plate by rotating shaft lever, and catch is opened, and air channel is unimpeded; When fan is extracted, spring automatic returning is vertical, and the stressed closure of catch only has a small amount of wind to reflux.。
Compared with prior art, when the present invention can guarantee that fan fails or fan are pulled out, prevent that a large amount of wind backflows from affecting the heat radiation of the anterior device of return flow path, can guarantee that again the device on return flow path meets self-radiating requirement.
Accompanying drawing explanation
Air stream field pattern when Figure 1A is the normal operation of existing communication equipment cabinets internal fan.
In existing communication equipment cabinets, after certain fan fails, there is the air stream field pattern of return flow path in Figure 1B.
Fig. 1 C is the air stream field pattern that in existing communication equipment cabinets, inefficacy fan frame place is provided with back-flow preventer.
Fig. 1 D is that in existing communication equipment cabinets, inefficacy fan is provided with the air stream field pattern of back-flow preventer after being pulled out.
Fig. 2 is that the utility model back-flow preventer is applied in the structural representation in case for communication equipment.
Fig. 3 is the structural representation of the utility model back-flow preventer embodiment mono-.
Air stream field pattern when Fig. 4 A is the utility model back-flow preventer embodiment mono-normal work.
Fig. 4 B is the utility model back-flow preventer embodiment mono-fan fails or the air stream field pattern while being pulled out.
Fig. 5 is the structural representation of the utility model back-flow preventer embodiment bis-.
Fig. 6 is the structural representation of the utility model back-flow preventer embodiment tri-.
Fig. 7 is the structural representation of the utility model back-flow preventer embodiment tetra-.
Fig. 8 is the structural representation of the utility model back-flow preventer embodiment five.
Embodiment
The utility model back-flow preventer is particularly useful for following communication equipment: the veneer A region that a side of equipment forms for several board types A, the opposite side of equipment is the heat radiation module that several fans or fan frame form, between heat radiation module and veneer A region, it is the board B region of several board types B composition.Conventionally veneer A, board B and heat radiation module can warm swaps, on-the-spot replacing.Wherein the installation direction of veneer A and board B can be parallel to each other, also can be mutually orthogonal, or at an angle.Heat radiation module is used specific direction to dispel the heat to veneer A and B.As shown in Figure 2, be the utility model and be applied under normal circumstances the exemplary wind direction schematic diagram in case for communication equipment: cold wind enters from veneer A region, through board B region, from the output of heat radiation module.
Further, in order to realize the utility model object, by in case for communication equipment near radiating module (in the utility model back-flow preventer, described heat radiation module is one group of fan) some veneers of side are divided into several constituent elements, corresponding one or several heat radiation modules of each constituent element, the corresponding one group of constituent element of each heat radiation module.Under normal circumstances, the catch on the utility model back-flow preventer is opened, and allows air normally to circulate; When certain heat radiation module lost efficacy, closed to the catch of the module that should dispel the heat, stop the backflow of most of air-flow, only allow constituent element corresponding to fraction airflow passes board B, guarantee that veneer meets heat radiation requirement.
For making the utility model more clear and clear, below describe the utility model back-flow preventer in detail:
Structural representation during as shown in Figure 3, for anti-return catch closure in the utility model back-flow preventer exemplary embodiment one and unlatching.In this embodiment, back-flow preventer comprises support 1 and some anti-return catch 2, and its medium-height trestle 1 can be made into integration, and also can by a plurality of sub-stents 11, be spliced as required, when support 1 is made into integration, the sub-stent 11 forming on it equates with the quantity of catch 2; One end of catch 2 is fixed on sub-stent 11, so that the other end of this catch 2 can carry out closure or openness around this fixing one end.Preferably, every section of stent length L0, catch length L 1, L1<L0 wherein, like this, when washer 2 during in closure and 11 of sub-stents will form backflow gap, when guaranteeing that back-flow preventer (closure) works, can stop most of air return, allow sub-fraction air return simultaneously.It should be noted that, when design, the air of these backflows only need to meet the heat radiation of the corresponding constituent element of board B, with this, guarantees that the relative atmospheric pressure in veneer a-quadrant is in elevated pressures state, make veneer A region keep higher wind, thereby guarantee that veneer a-quadrant is still for good radiating state.
As shown in Figure 4 A and 4 B shown in FIG., for board B corresponding to above-mentioned back-flow preventer runs well and air stream field pattern during fan fails at fan.When wherein Fig. 4 A represents that system is normally worked, due to the draft effect of board B aft fan, under the effect of wind-force, after the catch 2 on back-flow preventer overcomes gravity, open, air channel is smooth and easy.When Fig. 4 B represents when fan fails corresponding to board B constituent element or is pulled out, effect due to other fans, pressure field changes, wind direction is contrary, the catch 2 of the back-flow preventer in board B corresponding to this constituent element is owing to being subject to gravity and oppositely the effect of wind-force is closed, anti-return function on back-flow preventer is triggered, and now only allows part air stream through board B.
As shown in Figure 5, be the utility model back-flow preventer exemplary embodiment two.Different from previous embodiment one: in this embodiment, stent length L0=catch length L 1, on several anti-return catch, be provided with the return port 21 of definite shape and quantity simultaneously, when the anti-return function on assurance back-flow preventer is triggered, catch 2 on back-flow preventer can stop most of air return, and the return port 21 simultaneously arranging on it allows sub-fraction air return.
As shown in Figure 6, be the utility model back-flow preventer exemplary embodiment three.In this embodiment, back-flow preventer is also comprised of support 1 and some anti-return catch 2, and according to catch quantity, support 1 is divided into several sub-stents 11.Different from above-described embodiment one, two is, in the present embodiment, only at heat radiation key area, (common corresponding board B position is high power device or radiator, need certain air to flow through and take away heat) offer several return ports 21 on the catch of correspondence position, or the length of controlling catch 2 makes the backflow gap of sub-stent 11 and catch 2 formation to the key area that should dispel the heat, when the anti-return function of assurance back-flow preventer works, stop most of air return, allow sub-fraction air return simultaneously.For non-heat radiation key area, stop the air of whole backflows.
In above-mentioned three exemplary, be all by reducing the return air amount in board B region, thereby make veneer A region keep higher pressure and wind speed, guarantee that veneer A and board B meet heat radiation requirement simultaneously, improve system radiating robustness.Above-mentioned anti-return catch, is made by thin plastic sheet or foil conventionally, and while guaranteeing that anti-return function is not opened, the wind-force that fan forms enough overcomes the gravity of himself, and opening angle is the bigger the better, that is above-mentioned catch water crossing is flat better.
Yet except utilizing wind-force and gravity to realize the opening and closing of the utility model back-flow preventer catch, the utility model back-flow preventer also can be realized by mechanical device, guarantee when fan runs well, anti-return catch 2 is opened, and air channel is unimpeded; When fan fails, anti-return catch 2 is closed, and realizes anti-return function.
As shown in Figure 7, for the utility model exemplary embodiment four, utilize mechanical device and realize Anti-backflow structure schematic diagram.In this embodiment, except support 1, catch 2, also comprise an elastic device 3, wherein this elastic device 3 comprises spring 31, rotating shaft lever 32 and pull bar 33.Wherein one end of pull bar 33 and one end of baffle plate 2 are connected, and the other end is connected with spring 32, and one end of rotating shaft lever 33 is connected with spring 32, and the other end contacts with fan frame.Like this, when fan inserts, fan frame promotes rotating shaft lever 32 Compress Springs 31, drives pull bar 33 by the vertical pull-up of baffle plate 2, and catch is opened, and air channel is unimpeded; When fan is extracted, spring is upheld automatically, catch 2 under the effect of automatic gravity with support 1 closure, only have a small amount of wind to reflux.
As shown in Figure 8, for the utility model exemplary embodiment five, another utilizes mechanical device to realize Anti-backflow structure schematic diagram.In this embodiment, catch 2 is fixed on rotating shaft pull bar 32, and described catch 2 can horizontally rotate along with rotating shaft pull bar 32; Spring 31, one end and cabinet are fixed, and the other end and catch 2 are fixing; When fan inserts, spring 31 is subject to force compresses, by rotating shaft lever 32, baffle plate is horizontally rotated, and catch 2 is opened, and air channel is unimpeded; When fan is extracted, spring automatic returning is vertical, and the stressed closure of catch 2 only has a small amount of wind to reflux.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (8)
1. a back-flow preventer, be applied in a side of close heat radiation module in case for communication equipment, veneer near heat radiation module in described case for communication equipment is divided into several constituent elements, corresponding one or several heat radiation modules of each constituent element, the corresponding one group of constituent element of each heat radiation module, is characterized in that, described device includes support and catch, under normal circumstances, catch is opened, and air normally circulates; When heat radiation module lost efficacy, closed to the catch of the module that should dispel the heat, allow constituent element corresponding to a small amount of airflow passes.
2. device as claimed in claim 1, is characterized in that, described support includes the sub-stent equating with catch quantity, and one end of described catch is fixed on sub-stent, and the other end can carry out opening and closing around this end.
3. device as claimed in claim 1 or 2, is characterized in that, sub-stent length L 0, and catch length L 1, wherein L1<L0, makes washer form backflow gap when closure and between sub-stent.
4. device as claimed in claim 3, is characterized in that, described backflow gap is corresponding with heat radiation key area.
5. device as claimed in claim 1 or 2, is characterized in that, described stent length and catch are equal in length, on described catch, is provided with return port.
6. device as claimed in claim 5, is characterized in that, the return port on described catch is corresponding with the position of heat radiation key area.
7. device as claimed in claim 1 or 2, is characterized in that, described back-flow preventer also includes elastic device, and described elastic device includes spring, rotating shaft lever and pull bar, wherein,
One end of pull bar is connected with baffle plate, and the other end is connected with one end of rotating shaft lever;
One end of rotating shaft lever is connected with spring, the other end with spring contact;
When fan inserts, fan frame promotes rotating shaft lever Compress Spring, drives pull bar by the vertical pull-up of baffle plate, and catch is opened, and air channel is unimpeded; When fan is extracted, spring is upheld automatically, and catch is closed with sub-stent under the effect of automatic gravity, only has a small amount of wind to reflux.
8. device as claimed in claim 1 or 2, is characterized in that, described back-flow preventer also includes elastic device, and described elastic device includes spring and rotating shaft pull bar, wherein,
Catch is fixed on rotating shaft pull bar, and described catch can horizontally rotate along with rotating shaft pull bar;
Spring, one end and cabinet are fixed, and the other end and catch are fixed;
When fan inserts, spring stress compression, horizontally rotates baffle plate by rotating shaft lever, and catch is opened, and air channel is unimpeded; When fan is extracted, spring automatic returning is vertical, and the stressed closure of catch only has a small amount of wind to reflux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613595.9U CN203590649U (en) | 2013-09-30 | 2013-09-30 | Back-flow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613595.9U CN203590649U (en) | 2013-09-30 | 2013-09-30 | Back-flow preventer |
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| Publication Number | Publication Date |
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| CN203590649U true CN203590649U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320613595.9U Expired - Lifetime CN203590649U (en) | 2013-09-30 | 2013-09-30 | Back-flow preventer |
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| CN (1) | CN203590649U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700651A (en) * | 2016-02-29 | 2016-06-22 | 联想(北京)有限公司 | Backflow preventing device and heat dissipating device with same |
| CN106055051A (en) * | 2016-06-27 | 2016-10-26 | 联想(北京)有限公司 | Backflow preventer and fan wall |
| CN111356330A (en) * | 2018-12-22 | 2020-06-30 | 鸿富锦精密工业(武汉)有限公司 | Guide structure for changing air flow and case |
| US10852029B2 (en) | 2018-10-10 | 2020-12-01 | Wistron Corporation | Window-shades mechanism with an anti-backflow function, related fan device and electronic apparatus |
| CN112631392A (en) * | 2020-12-29 | 2021-04-09 | 成都前锋电子仪器有限责任公司 | Air draft type case |
| US11464143B2 (en) | 2020-09-30 | 2022-10-04 | Xiamen Tianma Micro-Electronics Co., Ltd. | Heat dissipation device of display apparatus and method for dissipating heat of display apparatus, and display device |
| CN116546801A (en) * | 2023-07-05 | 2023-08-04 | 深圳多为智联科技有限公司 | Entity assembly of central control system of electric automobile |
| WO2024094026A1 (en) * | 2022-10-31 | 2024-05-10 | 锐捷网络股份有限公司 | Heat dissipation system, and electronic device using heat dissipation system |
-
2013
- 2013-09-30 CN CN201320613595.9U patent/CN203590649U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700651A (en) * | 2016-02-29 | 2016-06-22 | 联想(北京)有限公司 | Backflow preventing device and heat dissipating device with same |
| CN105700651B (en) * | 2016-02-29 | 2019-02-05 | 联想(北京)有限公司 | A kind of back-flow preventer and the radiator with the back-flow preventer |
| CN106055051A (en) * | 2016-06-27 | 2016-10-26 | 联想(北京)有限公司 | Backflow preventer and fan wall |
| CN106055051B (en) * | 2016-06-27 | 2019-07-26 | 联想(北京)有限公司 | A kind of device and fan wall of anti-return |
| US10852029B2 (en) | 2018-10-10 | 2020-12-01 | Wistron Corporation | Window-shades mechanism with an anti-backflow function, related fan device and electronic apparatus |
| CN111356330A (en) * | 2018-12-22 | 2020-06-30 | 鸿富锦精密工业(武汉)有限公司 | Guide structure for changing air flow and case |
| US11464143B2 (en) | 2020-09-30 | 2022-10-04 | Xiamen Tianma Micro-Electronics Co., Ltd. | Heat dissipation device of display apparatus and method for dissipating heat of display apparatus, and display device |
| CN112631392A (en) * | 2020-12-29 | 2021-04-09 | 成都前锋电子仪器有限责任公司 | Air draft type case |
| WO2024094026A1 (en) * | 2022-10-31 | 2024-05-10 | 锐捷网络股份有限公司 | Heat dissipation system, and electronic device using heat dissipation system |
| CN116546801A (en) * | 2023-07-05 | 2023-08-04 | 深圳多为智联科技有限公司 | Entity assembly of central control system of electric automobile |
| CN116546801B (en) * | 2023-07-05 | 2023-09-08 | 深圳多为智联科技有限公司 | Entity assembly of central control system of electric automobile |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: NEW H3C TECHNOLOGIES Co.,Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: HANGZHOU H3C TECHNOLOGIES Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |