WO2012092904A2

WO2012092904A2 - Device case and communication equipment

Info

Publication number: WO2012092904A2
Application number: PCT/CN2012/071164
Authority: WO
Inventors: 赵钧; 苏燕; 杨成鹏
Original assignee: 华为技术有限公司
Priority date: 2012-02-15
Filing date: 2012-02-15
Publication date: 2012-07-12
Also published as: CN102714931B; WO2012092904A3; CN102714931A

Abstract

Provided is a device case and communication equipment, the device case comprising a fan, and communication components. Back-draft prevention fins are arranged between the fan and the communication components, and a constant-pressure cavity is formed between the back-draft prevention fins and the communication components. By means of the constant-pressure cavity formed between the fan and the communication components, the present invention allows supplementary air to flow to a ventilation passage providing protection of the fan, thus avoiding the risks associated with heat dispersal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to communication technologies, and in particular, to a chassis and a communication device. Background technique

The communication device generally includes a plurality of chassis, each of which is provided with various communication components such as a memory and a hard disk, and these communication components generate heat during the working process; in order to ensure the normal operation of the components, the components must be dissipated in time. Therefore, a fan frame is also provided in the chassis. The fan frame and the communication unit divide the chassis into two parts, one part of the space for accommodating the communication part, and the other part of the space to set the fan frame next to the communication part.

A fan set is usually installed in the fan frame. The fan is powered by the power module in the chassis. When the fan is working, airflow will be generated. The airflow will directly enter the communication component area that is close to the fan, and will flow in the gap between the communication components to form a air duct, and the heat generated by the communication component will be taken away by the airflow in the air duct. . Since the fan abuts the communication component and the airflow directly enters the communication component area corresponding to the fan position, each group of fans is mainly used to dissipate the part of the communication component corresponding to the position. When the fan is used for a long time, it needs to be repaired. Currently, the fan maintenance mode is that the fan frame is fixed in the chassis, so the communication device must be powered off, and the chassis is completely pulled out from the communication device. , Open the top cover of the chassis and replace the fan.

In the above fan maintenance mode, the communication device must be powered off and the chassis is pulled out from the communication device, and the cover of the chassis is opened to perform fan replacement. The maintenance operation is very complicated, which inevitably makes the fan maintenance take a long time, affecting the device. Normal operation; however, when a certain group of fans is removed, the airflow on the air duct at the corresponding position of the fan will be significantly reduced, affecting the heat dissipation of the communication components passing through the air duct, and the longer fan maintenance time will inevitably make The communication system in the chassis is prone to heat dissipation risks. Summary of the invention

One aspect of the present invention is to provide a chassis to reduce the risk of heat dissipation in the communication system. Another aspect of the present invention is to provide a communication device to reduce the risk of heat dissipation in a communication system. The chassis provided by the present invention includes a fan and a communication component; a backflow prevention sheet is disposed between the fan and the communication component, and a pressure equalization cavity is formed between the backflow prevention sheet and the communication component.

The communication device provided by the present invention comprises: the chassis of the present invention.

The technical effects of the chassis and the communication device of the present invention are: by providing a backflow prevention sheet between the fan and the communication component, a pressure equalization cavity is formed between the backflow prevention sheet and the communication component, so that the airflow can be supplemented to the maintenance fan. On the corresponding air duct, avoid the risk of heat dissipation from the system. DRAWINGS

1 is a schematic structural view of a fan frame in an embodiment of a chassis of the present invention;

2 is a schematic structural diagram of application of a fan frame in an embodiment of a chassis of the present invention;

3 is a schematic view showing the working principle of an embodiment of the chassis of the present invention;

4 is a schematic structural view of a fan frame in another embodiment of the chassis of the present invention;

Figure 5 is a schematic structural view of still another embodiment of the chassis of the present invention;

FIG. 6 is a schematic structural diagram of a fan frame in another embodiment of the chassis of the present invention. DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention provide a chassis including a fan and a communication component, and a backflow prevention sheet is disposed between the fan and the communication component, and a voltage equalization is formed between the backflow prevention sheet and the communication component Cavity. The airflow chamber can disperse the airflow of the unmaintained fan to the air channel corresponding to the fan to be maintained, ensuring timely heat dissipation of the communication component corresponding to the air channel, and reducing the risk of heat dissipation.

Embodiment 1

In this embodiment, the chassis of the fan frame with the top plug-in type is taken as an example to describe the structure of the chassis; that is, the fan is disposed in the fan frame; other types of chassis also have the following structures, for example, having a front plug type The chassis of the fan frame is not mentioned here.

In order to describe the structure and principle of the chassis, the following describes the structure of the chassis in the chassis. The working principle of the chassis in this embodiment is described in conjunction with the structure of the fan frame.

FIG. 1 is a schematic structural diagram of a fan frame according to an embodiment of the present invention. As shown in FIG. 1 , the fan frame includes a fan bracket 11 , and a plurality of fan slots 12 are disposed in the fan bracket 1 . The fan 13 is accommodated. Specifically, the fan slot 12 is equivalent to a receiving slot, and the fan 13 can Insert the fan slot 12 or remove it from the fan slot 12 for replacement. FIG. 1 shows three sets of fans, such as one fan group A, which includes two fan slots 12; each fan group is separated by a partition 14 which serves as a fan at the same time. The side wall of the slot 12.

In this embodiment, the anti-backflow plate 15 can be fixed on the fan bracket 11 of the fan frame, and the fan monitoring plate 16 is also fixed on the fan bracket 11. Among them, the backflow prevention sheet 15 is provided between the fan and the communication member in the cabinet, so it is disposed at the rear of the fan holder 11. Referring to FIG. 2, FIG. 2 is a schematic diagram of an application structure of a fan frame according to an embodiment of the present invention. When the fan frame is installed in the chassis, the anti-backflow plate 15 is interposed between the fan 13 and the communication component 17 in the chassis. The airflow 18 formed by the operation of the fan 13 will pass through the backflow prevention sheet 15 and enter the air passage of the communication component area. Optionally, the chassis is further provided with a chassis motherboard, and the fan monitoring board 16 is configured to connect the length adjustable cable 19, and the length adjustable cable 19 is connected to the chassis motherboard, and the length of the adjustable cable 19 is Telescopic.

The working principle of the chassis of this embodiment will be described below with reference to FIG. 3. FIG. 3 is a schematic diagram of the working principle of the chassis of the present invention:

When a group of fans in the fan frame, such as the fan group A, needs to be replaced, the fan frame 20 can be completely pulled out from the chassis 21. At this time, a cavity 22 is formed between the fan frame 20 and the communication component in the chassis 21. Because the length adjustable cable 19 connected between the chassis main board and the fan monitoring board 16 is retractable, the length adjustable cable 19 will be elongated during the process of pulling out the fan frame 20, and the fan frame is supported. Drag out to maintain normal power supply to the fan during maintenance of the fan.

Moreover, since the backflow prevention sheet 15 is disposed between the fan 13 and the communication member, the backflow prevention sheet 15 can be automatically closed under the action of the air pressure inside the chassis to prevent backflow; the fan group B and the fan in the fan frame The airflow 18 formed by the group C during operation does not flow out from the open space formed after the fan group A is removed, and the backflow prevention sheet 15 can enclose the airflow 18 in the casing. In addition, since the length adjustable cable 19 is used, the length adjustable cable 19 supports the fan frame to be pulled out, so that the fan cover is not powered off as in the prior art, and the fan frame is powered off. You can directly pull the fan frame out of the chassis without opening the cover of the chassis. That is, the top of the cavity 22 is also closed and closed by the upper cover of the chassis, so the airflow 18 does not flow out of the chassis from above. In summary, the cavity 22 actually forms a closed cavity, the air flow does not flow out, and the cavity 22 is a pressure equalization cavity.

On this basis, the airflow generated by the fan group B and the fan group C can be in the cavity 22 Evenly distributed, the airflow is added to the air channel corresponding to the fan group A, so that the communication components corresponding to the fan group A can also dissipate heat normally, thereby avoiding the risk of heat dissipation of the system.

In the chassis of the embodiment, by providing an anti-backflow plate between the fan and the communication component, a pressure equalization cavity is formed between the anti-backflow plate and the communication component, so that the airflow can be added to the air channel corresponding to the maintenance fan, thereby avoiding The system creates a risk of heat dissipation.

Embodiment 2

4 is a schematic structural diagram of a fan frame in another embodiment of the chassis of the present invention. The structure of the fan frame is described by taking the top plug-in type as an example; and the structure of the fan frame in the chassis in the first embodiment Further improvements are made, and the present embodiment is described in detail with reference to the first embodiment. The same structure is only described briefly.

As shown in FIG. 4, the fan 13 in the fan frame of the present embodiment can be vertically pulled out from the fan slot 12, and the fan frame includes three groups of fans, such as a fan group A, and each group of fans includes a front stage. In the fan slot 12a and the rear fan slot 12b, the front fan slot 12a is farther away from the communication component in the chassis than the rear fan slot 12b.

Optionally, the backflow prevention sheet 15 of the embodiment can be disposed close to the fan 13, so that the volume formed by the cavity between the fan frame and the communication component is larger, and the airflow is more evenly distributed in the cavity. It is better to add to the air duct corresponding to the maintenance fan, and the heat dissipation effect is better.

Optionally, for the structure of the front and rear fan slots in the embodiment, the windshield 23 can be disposed on the sidewall of the rear fan slot 12b. Wherein, the side wall may be a partition 14 as shown in Fig. 4, and the windshield spring 23 may be fixed to the side wall by an elastic rotary shaft. The working characteristic of the elastic rotary shaft is that when the fan 13 is placed in the fan slot 12, the elastic rotary shaft rotates under the pressure of the fan 13, so that the windshield spring 23 abuts against the side wall, is pressed by the fan 13 and is accommodated in the In the fan slot 12, when the fan 13 is pulled out from the fan slot 12, the elastic rotary shaft is automatically rotated by the pressing of the fan 13, so that the windshield 23 is tilted upward to block the fan 13 The top of the fan slot prevents airflow from flowing out of the top of the empty fan slot, improving the airtightness of the cavity.

For example, as shown in FIG. 4, the number of the windshield springs 23 of the present embodiment may be two, and the two windshield springs 23 are respectively disposed on opposite side walls of the rear fan slot. When only the rear-end fan is removed and the fan is removed from the rear-stage fan slot for maintenance, the two windshield springs 23 will be rotated 90 degrees to block the top of the fan slot to ensure the airflow of the fan in the front-end fan slot. Will not be from the post-wind The top of the fan slot flows out, and the cavity is still a pressure equalizing cavity. The airflow can be continuously added to the air channel corresponding to the fan to be maintained, avoiding the risk of heat dissipation when the fan is maintained.

Optionally, the top and bottom surfaces of the fan bracket of the embodiment are respectively provided with a sealing strip 24 for sealing the gap between the fan frame and the chassis; the gap refers to the top surface of the fan frame and the chassis. The gap between the top surfaces, and the gap between the bottom surface of the fan frame and the bottom surface of the chassis, which is generally provided to facilitate the extraction of the fan frame from the chassis. By providing the sealing strip to block the above gap, the airflow can be prevented from leaking from the gap, the sealing property of the cavity can be further improved, the airflow can be more uniform, and the effect of supplementing the corresponding air duct of the maintained fan is better.

For example, the above-mentioned weather strip 24 may be an elastic material such as rubber.

Optionally, the tilt angle and the mounting position of the backflow prevention sheet 15 in this embodiment can be adjusted according to actual conditions. For example, the backflow prevention sheet 15 is preferably disposed at a position close to the fan. However, if some other components need to be disposed at the rear of the fan according to the actual requirements of the chassis installation structure, the backflow prevention sheet 15 may be provided with a certain fan. The spacing of the components is set at the interval; at this time, the volume of the cavity between the fan and the communication component is reduced, which may slightly reduce the replenishing effect of the airflow, but may also serve to dissipate heat.

Further, by adjusting the inclination angle of the backflow prevention sheet 15, the speed at which the fan group generates the airflow and the speed at which the backflow prevention sheet is closed can be adjusted. For example, if the inclination angle of the backflow prevention sheet 15 is set to be small, the speed of the airflow generated by the fan group into the cavity will be moderate, and the speed of the backflow prevention sheet will be closed faster; if the inclination angle of the backflow prevention sheet 15 is If the setting is larger, the airflow generated by the fan group will enter the cavity faster, and the anti-reflow plate will be turned off slightly slower.

In addition, the fan frame in this embodiment can also be used in the following applications: In some special cases, such as the device temperature alarm needs to be located, the fan frame can be pulled out, so that the fan frame and the rest of the chassis A large pressure equalization chamber is formed between the devices, which can make the airflow of each air duct more uniform and better heat dissipation effect, can improve the PQ (pressure-flow) characteristics of the fan, increase the system air volume, and reduce the heat dissipation risk of the device.

Embodiment 3

FIG. 5 is a schematic structural view of still another embodiment of the chassis of the present invention, and FIG. 6 is a further embodiment of the chassis of the present invention. The structure of the fan frame in the embodiment is shown in the present embodiment. The fan frame of the front panel is inserted and removed. The direction of the fan insertion and removal in this type of fan frame is different from that of the second embodiment, and is inserted from the front.

As shown in FIG. 5, the fan frame 20 can be pulled out from the chassis 21, and the fan 13 can be removed from the fan frame 20 for replacement. As shown in FIG. 3, the chassis 21 is further provided with a chassis main board, and the fan monitoring board of the chassis main board and the fan frame is connected by the length adjustable cable 19; when the fan frame 20 is pulled out from the chassis 21, the length adjustable line Cable 19 can be telescoped.

Optionally, a cable tray 28 can be disposed in the chassis 21, and the length adjustable cable 19 is fixed on the cable tray. Specifically, the cable tray can be installed on the rear side of the fan or on the side surface 29, and the fixed length can adjust the cable 19, and automatically scale the cable according to the insertion and removal action of the fan frame, and does not hinder the insertion and removal of the fan frame. The placement of the length adjustable cable is space-saving and convenient to operate; for example, the cable rack can be a variable-shape diamond structure that adjusts the cable length by the variability of the diamond structure.

Optionally, in order to facilitate the insertion and removal of the fan frame, a rail type drag structure may also be provided. For example, a guide bar 26 may be disposed on the outer side 25 of the side panel of the fan bracket of the fan frame, and a guide rail 27 is disposed on the inner side wall of the chassis opposite to the outer side 25 of the side panel of the fan bracket, and the guide bar 26 cooperates with the guide rail 27.

As shown in FIG. 6 , the fan frame is different from the structure in the second embodiment in that the rear fan slot of the fan frame of the embodiment is no longer provided with a windshield; The fan in the fan slot and the fan in the rear fan slot can only extract the fan frame. The corresponding position of the fan is empty. If there is no fan, there is no need to set the windshield. Other structures are the same as those of the second embodiment and will not be described again.

In the chassis of the embodiment, by providing an anti-backflow plate between the fan and the communication component, a pressure equalization cavity is formed between the anti-backflow plate and the communication component, so that the airflow can be added to the air channel corresponding to the maintenance fan, thereby avoiding The system generates the risk of heat dissipation. Moreover, after the structure of the embodiment is used, when the fan is maintained, the fan cover can be directly pulled out without opening the cover of the chassis, so that the maintenance of the fan is simple and convenient, and the chassis is not powered off. The fan frame is not powered off, and hot swapping of the fan maintenance is implemented.

The structure of the embodiments of the present invention can be applied to each other. For example, the optional structure of the chassis in the third embodiment can also be applied to the optional structure of the fan frame in the second embodiment or the second embodiment. The shrapnel, the sealing strip, etc.) can also be applied to the third embodiment.

Embodiment 4

The present invention also provides a communication device comprising the machine according to any of the embodiments of the present invention A box, for example, can include multiple chassis in the device.

A person skilled in the art can understand that all or part of the steps of implementing the foregoing method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Claim

A chassis, comprising: a fan, and a communication component; a backflow prevention sheet is disposed between the fan and the communication component, and a pressure equalization cavity is formed between the backflow prevention sheet and the communication component.

The chassis of claim 1, wherein the fan is disposed in a fan frame, and the anti-backflow plate is fixed on the fan bracket of the fan frame.

3. The chassis according to claim 2, wherein the backflow prevention sheet is disposed adjacent to the fan.

The chassis of claim 2, wherein the fan bracket is provided with a plurality of fan slots, and the fan is placed in the fan slot;

The fan slot includes a front-end fan slot and a rear-stage fan slot, and the front-stage fan slot is farther away from the communication component than the rear-stage fan slot;

A windshield elastic piece is disposed on a side wall of the rear stage fan slot, and the windshield elastic piece is fixed on the side wall by an elastic return shaft.

The chassis according to claim 4, wherein the number of the windshield springs in each of the rear fan slots is two, and two of the windshield springs are respectively disposed at the rear stage. The fan slots are located on opposite side walls.

The chassis according to claim 4, wherein the fan slot is a fan top plug-in type or a fan front plug-in type.

The chassis according to claim 2, wherein a top surface and a bottom surface of the fan bracket are respectively provided with sealing strips for sealing a gap between the fan frame and the chassis.

8. The chassis according to claim 7, wherein the sealing strip is rubber.

The chassis according to any one of claims 2-8, wherein the chassis is further provided with a chassis main board, and the chassis main board and the fan monitoring board in the fan frame are connected by a length adjustable cable. .

The chassis according to claim 9, wherein the chassis further includes a cable rack, and the length adjustable cable is fixed on the cable rack.

The chassis according to any one of claims 2 to 10, wherein a guide bar is disposed outside the side panel of the fan bracket of the fan frame, and the outer side of the chassis is opposite to the outer side of the side panel of the fan bracket. A guide rail is disposed on the inner side wall, and the guide bar cooperates with the guide rail.

12. A communication device, comprising the chassis of any of claims 1-11.