WO2010072032A1

WO2010072032A1 - Fan system and insert frame system

Info

Publication number: WO2010072032A1
Application number: PCT/CN2008/073732
Authority: WO
Inventors: 黄涛; 姚希栋; 龙柏林; 罗新会; 王波; 聂飞; 皮先文; 张光钧; 蒲润宏; 廖建行; 黄英冬
Original assignee: 华为技术有限公司
Priority date: 2008-12-25
Filing date: 2008-12-25
Publication date: 2010-07-01
Also published as: CN102257773B; CN102257773A

Abstract

A fan system and an insert frame system. The fan system includes: at least two layers of fan frame areas (7) which are backup each other are provided in the air channel direction. At least of one fan frame (12) is set in the each layer of the fan frame area (7). At least of one fan (2) is set in the each fan frame (12). In the system requiring heat dissipating, at least two layers of fan frame areas are provided in the air channel direction, and at least of one fan frame is set in the each layer of the fan frame area, when any fan frame in one layer of the fan frame areas is pulled out, it can assure the heat dispersion of the system and the normal operation according to the embodiment of the present invention.

Description

Fan system and frame system

The embodiments of the present invention relate to communication technologies, and in particular, to a fan system and a frame system. Background technique

Advanced Te lecom Comput ing Architect (ATCA) is a cost-effective, compatible and scalable hardware architecture for next-generation converged communications and data networks. ATCA is presented in a modular structure to support technologies or applications that meet modern transmission needs. ATCA is based on the Compact Periphera Component Interconnect (CPCI) standard, which is developed by the International Industrial Computer Manufacturers Association (PCI Indus tr ia l Computer Manufacturer's Group, below). Abbreviation: PICMG) Organized by more than 100 companies, it is a high reliability, availability and applicability application focused on the needs of telecom operators. As ATCA is an open telecom architecture platform, it is widely recognized by the industry.

The power of the ATCA system is high, and a lot of heat is released during operation. If the heat is not discharged in time, the device on the board will be self-protected or damaged due to overheating. Therefore, heat dissipation is one of the key technologies of ATCA. In the ATCA system, the fan is generally used for heat dissipation, but the fan is a vulnerable component. Therefore, when the ATCA system is used in the telecommunications field where the reliability is very high, it is necessary to ensure that the damage and replacement of a single fan does not affect the normal operation of the system.

In order to facilitate the replacement of the fan, in the prior art, the fan is placed in a pluggable drawer-like frame, and the fan-mounted frame is generally referred to as a fan frame, also called a fan drawer, a fan. Frames, fan boxes, fan trays, etc., use a fan frame to reduce the impact of individual fan damage and fan replacement on the normal operation of the system. When there is a fan failure, only the fan frame where the damaged fan is located needs to be pulled out, and other fans can work normally.

In the process of implementing the present invention, the inventors have found that the prior art has at least the following problems: Since the interaction between the fan frames is very small, after unplugging any fan frame, the corresponding plug-in board above the unplugged fan frame is not used. In the cooling fan, the temperature of the board rises rapidly. If the time is long, the system will be shut down due to power interruption and service interruption. Summary of the invention

The embodiment of the invention provides a fan system and a frame system to improve system operation stability. An embodiment of the present invention provides a fan system, including: at least two layers of fan frame areas that are backed up in the airway direction, at least one fan frame is disposed in each fan frame area, and at least one fan frame is disposed in each fan frame. fan.

An embodiment of the present invention provides a frame system, including a frame body, wherein the frame body is provided with a plug-in board and a fan area, an air inlet area located below the board board, and an air outlet area located above the board board. An air duct is formed between the air inlet of the air inlet area and the air outlet of the air outlet area, and the fan area is located between the board and the air outlet area or between the board and the air inlet area. In the fan zone, at least two layers of fan frame areas that are backed up from each other are disposed along the air channel direction, and at least one fan frame is disposed in each fan frame area, and at least one fan is disposed in each fan frame.

An embodiment of the present invention provides a fan system and a subrack system. In a system that requires heat dissipation, such as an ATCA or a CPCI, a fan frame area that is backed up at least two layers is disposed along the air duct direction, and the fan frame area can be ensured. Heat dissipation of the frame system when the fan frame in the fan frame area is removed Yes, the service board can work normally when the frame system is replaced and repaired. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are to be regarded as Other drawings may also be obtained from these drawings without the inventive labor.

1 is a schematic structural view of a first embodiment of a fan system according to the present invention;

2 is a schematic structural view of a second embodiment of a fan system according to the present invention;

Figure 3a is a front elevational view of the first embodiment of the frame system of the present invention;

Figure 3b is a left side cross-sectional view of the first embodiment of the frame system of the present invention;

3c is a schematic view of a fan frame of a first embodiment of the frame system of the present invention;

4a is a schematic view of a second embodiment of the frame system of the present invention;

4b is a schematic view of a fan frame of a second embodiment of the frame system of the present invention;

Figure 5a is a front elevational view showing the fan frame of the lower fan frame in the second embodiment of the frame system of the present invention;

Figure 5b is a left side cross-sectional view showing the fan frame of the lower fan frame in the second embodiment of the frame system of the present invention;

6a is a front view of the second embodiment of the frame system of the present invention with the fan frame removed from the upper fan frame;

6b is a second embodiment of the frame system of the present invention, the fan frame of the upper fan frame is pulled out Left side view;

7a is a schematic structural view of a windproof door according to a second embodiment of the frame system of the present invention;

7 b is a schematic view showing the operation of the windproof door of the second embodiment of the frame system of the present invention;

Figure 8a is a front elevational view of a third embodiment of the frame system of the present invention;

Figure 8b is a left side cross-sectional view showing a third embodiment of the frame system of the present invention;

Figure 9a is a front elevational view of a fourth embodiment of the frame system of the present invention;

Figure 9b is a left side cross-sectional view showing a fourth embodiment of the frame system of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a schematic structural view of a first embodiment of a fan system according to the present invention. As shown in FIG. 1 , the fan system includes: at least two layers of mutually backed fan frame regions 7 disposed along a direction of a wind tunnel, each of which is in a fan frame region 7 At least one fan frame 12 is provided, and at least one fan 2 is disposed in each fan frame.

Specifically, in some systems that require heat dissipation, such as ATCA, CPCI, etc., because the power of the devices in the system is too high, a fan system for heat dissipation needs to be provided. A duct is formed between the air outlet of the system and the air inlet, and the fan system can be disposed along the air duct direction. The fan system includes at least two layers of fan frame areas 7 that are backed up from each other. As shown by the dashed box in FIG. 1, the fan frame area 7 can be It can be set to two or more layers. When set to two layers, the effect of mutual backup can be achieved. That is, any fan frame 12 of one of the fan frame areas 7 is removed for maintenance without affecting the normal operation of the frame system. One or more fan frames 12 may be disposed in each of the fan frame regions 7, and each fan frame 12 is provided with one or more fans 2, which can dissipate heat for all devices in the entire system. When one or several fans fail, when the fan frame where the failed fan is removed in the fan frame area is replaced and repaired, the other fan frames can continue to work for heat dissipation, so the system does not affect the system. normal work.

In the fan system of the embodiment, at least two layers of fan frame areas are disposed along the air duct direction, and at least one fan frame may be disposed in each fan frame area, which can ensure the heat dissipation performance of the system after one of the fan frames is pulled out. Allows the system to function properly when replacing and servicing fans.

2 is a schematic structural view of a fan system according to a second embodiment of the present invention. As shown in FIG. 2, based on the first embodiment of the fan system of the present invention, the fan system preferably includes: an upper fan frame disposed along the air duct direction. The zone 71 and the lower fan frame section 72, the upper fan frame section 71 and the lower fan frame section 72 are backed up to each other.

Specifically, in a system requiring heat dissipation, two layers of mutually redundant fan frame regions may be disposed along the direction of the air duct: an upper fan frame region 71 and a lower fan frame region 72, as shown by the dashed box in FIG. The two layers of fan frame areas can be backed up to each other, that is, when the upper fan frame area 71 is pulled out, the lower fan frame area 72 can continue to dissipate heat for the system. The upper fan frame region 71 and the lower fan frame region 72 may be disposed together or separately, one disposed between the outlet region and the device of the system, and one disposed between the inlet region and the device of the system. The upper fan frame area 71 and the lower fan frame area 72 may be disposed along the air passage direction. The structure of the fan frame 12 in the upper fan frame area 71 and the lower fan frame area 72 may be the same for ease of replacement. Fan frame in each fan frame area There may be one or more, and the number of fans in each fan frame may also be one or more. The fan can be an axial fan or another fan.

In this embodiment, the structure of the two-layer fan frame area is used. When replacing and repairing the fan, only the fan frame where the damaged fan in the fan frame area is located is pulled out for maintenance, and the other layer of the fan frame area is The fan frame can still guarantee the heat dissipation performance of the system, so that the system can work normally.

3a is a front view of a first embodiment of a frame system according to the present invention, FIG. 3b is a left side cross-sectional view of the first embodiment of the frame system of the present invention, and FIG. As shown in FIG. 3a-3c, the frame system includes: a frame 4, a frame 3 and a fan area 6 disposed therein, an air inlet area 40 located below the board 3, and an upper portion of the board 3 The air outlet area 50, the air inlet 41 of the air inlet area 40 and the air outlet 51 of the air outlet area 50 form a air duct, and the fan area 6 is located between the board 3 and the air outlet area 50 or the board 3 and the air inlet area 40. Between the fan zone 6 and at least two layers of fan frame areas 7 that are backed up in each other, each fan frame area 7 is provided with at least one fan frame 12, and each fan frame 12 is provided with at least one fan. 2.

Specifically, the fan area 6 of the frame system such as the ATCA, CPCI, etc. can use the structure of the first embodiment or the second embodiment of the fan system of the present invention. In the fan area 6 of the framing system, along the direction of the air duct, as shown by the arrow in FIG. 3b, at least two layers of the fan frame area 7 which are backed up each other are provided, and three, four or more layers may also be disposed, wherein The two-layer fan frame area 7 can achieve the effect of mutual backup, that is, the fan frame 12 of one of the fan frame areas 7 is removed for maintenance without affecting the normal operation of the frame system. All of the fan frame areas 7 may be disposed between the interposer 3 and the air inlet area 40, or all of the fan frame areas 7 may be disposed between the interposer 3 and the air outlet area 50, or a part of the fan frame area. 7 is disposed between the interposer 3 and the air inlet region 40, and another portion is disposed between the interposer 3 and the air outlet region 50. A fan frame can be arranged in each fan frame area 7 12, two, three or more can also be set, wherein a fan frame is arranged in each fan frame area 7 to achieve mutual backup, that is, the fan frame in one of the fan frame areas 7 is removed for maintenance. When it does not affect the normal operation of the frame system. One or more fans 2 are disposed within each fan frame 12. The number of layers in the fan frame area, the number of fan frames in each fan frame area, and the number of fans in each fan frame can be specifically set according to the requirements of the heat dissipation performance of the frame system and the number of boards. Since the fan frame area 7 is arranged in an upper and lower layer, the fan frame 12 is also layered in each layer of the fan frame area. When working, the wind passes through the fan 2 of the fan frame 12 in each layer of the fan frame area 7 in the direction of the air passage. Take away the heat inside the frame system. When the fan 2 in the fan frame 12 in the frame system is damaged, when the fan frame 12 where the damaged fan 2 is located is taken out for maintenance, the remaining fan frame 12 of the layer or other layers can also cool the entire frame. The board 3 in the system, and because the fan frame area 7 in the fan area 6 is disposed along the air duct direction, pulling out the fan frame 12 in any one of the fan frame areas 7 does not change the required system of the frame system. The heat dissipation system, that is, if the frame system before the fan frame 12 is removed is the air extraction system, the frame system after the fan frame 12 is removed or the air extraction system is similarly applied to the frame before the fan frame 12 is removed. The system is the case of a blowing system. Therefore, the heat dissipation capability of the frame system can be guaranteed. The above-mentioned frame system is not limited to the ATCA or CPC I frame system, and may be other similar frame systems.

In this embodiment, at least two layers of fan frame areas are disposed along the air duct direction in the fan area of the ATCA, CPCI, etc., and at least one fan frame may be disposed in each fan frame area, which may not only be one of the fans. After the frame is removed, the heat dissipation performance of the subrack system is ensured, so that the subrack system can work normally when the fan is replaced and repaired.

4a is a schematic view of a second embodiment of the frame system of the present invention, and FIG. 4b is a frame system of the present invention. The fan frame of the second embodiment is shown in FIG. 4a and FIG. 4b. On the basis of the first embodiment of the frame system of the present invention, the fan area 6 of the frame system is located in the board 3 and the air inlet area 40. In the fan zone 6, an upper fan frame area 71 and a lower fan frame area 72 are disposed along the air passage direction, and the upper fan frame area 71 and the lower fan frame area 72 are backed up to each other.

When the frame system of the embodiment is working normally, the fan 2 blows the wind entering from the air inlet to the board 3. When any fan 2 is damaged, the fan frame 12 in any fan frame area can be pulled out for maintenance. In the following, the frame system for pulling out the fan frame frame 72 in the lower fan frame area 72 or the upper fan frame area 71 in the event of a failure will be described.

Figure 5a is a front view of the fan frame in the lower fan frame of the second embodiment of the present invention, and Figure 5b is a left side cross-sectional view of the fan frame in the lower fan frame of the second embodiment of the present invention. As shown in FIG. 5a and FIG. 5b, when the fan 2 of the fan frame in the lower fan frame area 72 is damaged, the fan frame in the lower fan frame area 72 needs to be removed or the fan 2 is repaired, and the fan frame is pulled out in the frame. The corresponding position on the body 4 becomes a part of the air inlet area 40, so that the air inlet area is increased. Therefore, although only the fan frame 12 in the upper fan frame area 71 is left, the air inlet area is increased due to the increase of the air inlet area 40, The fan 2 of the fan frame 12 in the upper fan frame area 71 increases the air intake amount while maintaining the original rotation speed, which can meet the requirements of the heat dissipation performance required for the normal operation of the frame system.

Figure 6a is a front view of the fan frame in the upper fan frame of the second embodiment of the present invention, and Figure 6b is a left side cross-sectional view of the fan frame in the upper fan frame of the second embodiment of the present invention. As shown in FIG. 6a and FIG. 6b, when the fan of the fan frame in the upper fan frame area is damaged, and the fan frame in the upper fan frame area 71 is removed or the fan 2 is repaired, the lower fan frame area 72 and the inserting board 3 are removed. There is a gap between the slots, which can increase the different slots of the board 3 The uniformity of the incoming air improves the application efficiency of the fan 2. However, the fan frame 12 in the upper fan frame area 71 that is pulled out may have air leakage at a corresponding position on the frame 4. When the upper fan frame area 71 is thin, the fan frame of the upper fan frame area 71 is pulled out and the air is leaked. The effect of the heat dissipation performance of the frame system is not obvious. If the upper fan frame area 71 is thick, the influence of the air leakage on the heat dissipation performance of the frame system may be obvious. Therefore, preferably, the frame 4 is provided with the upper fan frame area 71. A windshield that matches each fan frame. 7a is a schematic structural view of a windshield according to a second embodiment of the present invention. As shown in FIG. 7a, the windshield 9 is connected to the frame 4 through a connecting member 91. When the fan frame in the upper fan frame region 71 is The windshield 9 is automatically closed when the frame 4 is pulled out. The connecting member 91 is preferably a torsion spring or a rotating shaft. The windshield 9 is connected to the frame 4 by a torsion spring of the connecting member 91. Figure 7b is a schematic view showing the operation of the windshield of the second embodiment of the frame system of the present invention. As shown in Figure 7b, when the fan frame 12 in the upper fan frame area 71 is pulled out from the frame 4, the windproof door 9 follows the fan. The movement of the frame 12 can be slowly closed by the elastic force of the torsion spring, and after the fan frame 12 is completely pulled out of the frame 4, the windshield 9 is completely closed. The windshield 9 can be set to open to the left or the right as shown in Fig. 7b, or can be set to open up and down. If the windshield is not opened, if it is necessary to prevent air leakage, a panel can be manually covered after the fan frame is pulled out. Further, the connecting member 91 in the fan frame may also be a rotating shaft. After the fan frame 12 is completely pulled out from the frame 4, the windproof door 9 is rotated downward by the gravity rotation axis. A windproof door matching the fan frames in the lower fan frame area 72 may be disposed on the frame, and the windproof door is connected to the frame through a connecting member, and the fan frame in the lower fan frame area 72 is pulled out from the frame. The windshield door is automatically closed. When the framing system has a multi-layer fan frame area, all the fan frame areas except the lowermost fan frame area can be matched with the matching damper on the frame, or the fan frame area of all layers can be Set matching windshields. The fan frame 12 in the upper fan frame area 71 and the lower fan frame area 72 are preferably the same, and the fan 2 is preferably an axis. Flow fan.

In the embodiment, the fan frame system is disposed between the plug-in board and the air inlet area, and two upper and lower fan frame areas are disposed along the air duct direction in the fan area, and the upper fan frame area or the lower layer fan frame may be When the fan frame in the area is removed, the heat dissipation performance of the frame system is ensured. The service board can work normally when the fan system is replaced and repaired. The fan frame is matched with the fan frame in the upper fan frame area. The windshield, and the windproof door is connected to the frame through the connecting member, which can prevent the air leakage caused when the fan frame in the upper fan frame area is pulled out from the frame; the upper fan frame area and the lower layer fan used The structure of the fan frame in the frame area can be the same, so that only one spare fan frame is needed for maintenance, so maintenance is convenient.

In addition to the method of providing a windshield that matches the fan frame in the upper fan frame zone or the lower fan frame in the second embodiment of the frame system of the present invention, in addition to the air leakage, the present embodiment can also be used. The method of providing the connecting member on the frame prevents air leakage. When the fan frame in the upper fan frame area or the lower fan frame is pulled out of the frame, insert a windshield that matches the extracted fan frame into the connecting part. For example: slotted at the corresponding position of the frame and the upper fan frame area as a connecting component. If the fan frame in the upper fan frame area is removed for maintenance, the windproof door matching the upper fan frame area passes through the door slot. It can be prevented from leaking by snapping into the frame. There is also a handle on the windproof door, and the handle can be inserted or pulled out. Or directly attach a windproof door to the air leakage to prevent air leakage.

The frame system of the present embodiment is disposed between the card and the air inlet area in the fan area to ensure the heat dissipation performance of the frame system, so that the frame system can work normally when the fan is replaced and repaired; The connecting parts can be inserted into the windshield door to prevent air leakage when the fan frame in the upper fan frame area is pulled out; and since the fan frame of the same structure can be used, only one spare fan is needed for maintenance. The frame is therefore easy to maintain.

Figure 8a is a front view of a third embodiment of the frame system of the present invention, and Figure 8b is a left side cross-sectional view of the third embodiment of the frame system of the present invention, as shown in Figures 8a and 8b, based on the foregoing embodiment, The fan area 6 can also be located between the board 3 and the air outlet area 50. The structure and position of the fan frame 12 in the fan frame area can be referred to the description in the second embodiment of the frame system of the present invention. In the present embodiment, the fan area 6 is provided with an upper fan frame area 71 and a lower fan frame area 72 in the air passage direction, and the upper fan frame area 71 and the lower layer fan frame area 72 are backed up to each other. The frame body may be provided with a windproof door matched with each fan frame in the lower fan frame area, and the windproof door may be connected to the frame body through a connecting component, and the windproof frame is removed from the frame body when the lower fan frame area is pulled out from the frame body. The door is automatically closed, and the arrangement of connecting the windshield to the frame by the connecting member can be referred to the description in the second embodiment of the frame system of the present invention and Figs. 7a and 7b. Or the frame body may be provided with a connecting component. When the fan frame in the lower fan frame area is pulled out from the frame body, a windproof door matching the extracted fan frame is inserted into the connecting component, and the connecting component is Reference may be made to the description in the second embodiment of the frame system of the present invention.

In this embodiment, the frame system uses at least two layers of the fan frame area, and the fan area is disposed between the board and the air outlet area to ensure the heat dissipation performance of the frame system, so that the frame system is replaced and It can work normally when the fan is repaired; and because the fan frame of the same structure can be used, only one spare fan frame is needed for maintenance, so maintenance is convenient.

9a is a front view of a fourth embodiment of the frame system of the present invention, and FIG. 9b is a left side cross-sectional view of the fourth embodiment of the frame system of the present invention, as shown in FIGS. 9a and 9b, based on the foregoing embodiments, The fan area 6 may also be located between the board 3 and the air inlet area 40 and between the board 3 and the air outlet area 50. The lower fan frame area 72 is disposed between the board 3 and the air inlet area 40, and the board 3 is provided. With the wind zone 50 An upper fan frame area 71 is provided, and the upper fan frame area 71 and the lower fan frame area 72 are backed up to each other. The upper fan frame area 71 and the lower fan frame area 72 may be disposed along the air duct direction. When the frame system works normally, the wind passes through the fan, the insert board and the upper layer of the fan frame in the lower fan frame area 72 in the air passage direction. After the fan of the fan frame in the fan frame area 71, the heat in the frame system is taken away. In this embodiment, the frame may be provided with a windproof door matched with each fan frame in the upper fan frame area 71 or the lower fan frame area 72. The windproof door may be connected to the frame through a connecting component, and the upper fan frame area 71 Or the windshield door is automatically closed when the fan frame 12 in the lower fan frame area 72 is pulled out from the frame body 4. The arrangement of connecting the windproof door to the frame through the connecting member can refer to the second and third frame systems of the present invention. The description in the embodiment and Figures 7a and 7b. Or the frame body may be provided with a connecting component. When the fan frame in the lower fan frame area is pulled out from the frame body, a windproof door matching the extracted fan frame is inserted into the connecting component, and the connecting component is Reference may be made to the description in the second and third embodiments of the frame system of the present invention.

The frame system of the embodiment uses a structure of at least two layers of the fan frame area, and the fan area is disposed between the board and the air inlet area and between the board and the air outlet area, so as to ensure the heat dissipation performance of the frame system. Therefore, the frame system can work normally when the fan is replaced and repaired; and since the fan frame of the same structure can be used, only one spare fan frame is needed for maintenance, so maintenance is convenient.

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; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A fan system, comprising: at least two layers of mutually backed fan frame areas disposed along a direction of a wind tunnel, each fan frame area being provided with at least one fan frame, and each fan frame is provided with at least one A fan.

2. The fan system according to claim 1, comprising: an upper fan frame area and a lower fan frame area disposed along a direction of the air passage, wherein the upper fan frame area and the lower fan frame area are backed up each other.

A framing system, comprising a frame, the frame body is provided with a plug-in board and a fan area, an air inlet area located below the board, and an air outlet area located above the board, the air inlet Forming an air duct between the air inlet of the area and the air outlet of the air outlet area, wherein the fan area is located between the board and the air outlet area or between the board and the air inlet area Between the fan zones, at least two layers of fan frame areas that are backed up from each other are disposed along the air channel direction, and at least one fan frame is disposed in each fan frame area, and at least one fan is disposed in each fan frame.

The framing system according to claim 3, wherein the fan area is located between the board and the air inlet area or between the board and the air inlet area, the fan An upper fan frame area and a lower fan frame area are disposed along the air channel direction, and the upper fan frame area and the lower fan frame area are backed up each other.

The framing system according to claim 3, wherein the fan area is located between the board and the air inlet area and between the board and the air outlet area, An upper fan frame area is disposed between the inserting plate and the air inlet area, and an upper fan frame area is disposed between the inserting plate and the air outlet area, and the upper fan frame area and the lower layer fan frame area are mutually Backup.

The framing system according to claim 4 or 5, wherein the frame is arranged a windproof door matched with each fan frame in the upper fan frame area or the lower fan frame, the windproof door being connected to the frame by a connecting member, when the upper fan frame area or the lower fan frame area The windshield automatically closes when the fan frame is pulled out of the frame.

7. The frame system according to claim 6, wherein the connecting member is a torsion spring or a rotating shaft.

The framing system according to claim 4 or 5, wherein the frame body is provided with a connecting member, wherein the fan frame in the upper fan frame area or the lower fan frame area is from the frame When pulled out, a windproof door that matches the extracted fan frame is inserted into the connecting member.

The framing system according to claim 4 or 5, wherein the upper fan frame area and the fan frame in the lower fan frame area are the same.

The framing system according to any one of claims 3-5, wherein the fan is an axial fan.