Fool-proof backflow-proof fan wall structure, heat dissipation mechanism and server case

Abstract

The utility model relates to the technical field of heat dissipation devices, and discloses a fool-proof backflow-preventing fan wall structure, a heat dissipation mechanism and a server chassis, a foldable wind shielding curtain is arranged at a cold air outlet or a cold air inlet in each fan installation cavity, when a fan module is installed in place, the fan module acts on the sliding end of the wind shielding curtain, and the fan module is prevented from being blocked by the wind shielding curtain. When the fan module is disassembled, the sliding end of the wind shielding curtain slides in the direction close to the fixed end so as to relieve blocking of the cold air outlet or the cold air inlet, normal work of the fan module is ensured, and air circulation and heat dissipation efficiency in the case are not affected; the sliding end of the air blocking curtain slides in the direction away from the fixed end so as to unfold the air blocking curtain and restore blocking of the cold air outlet or the cold air inlet, hot air backflow is prevented, an operator does not need to manually insert or take out the air blocking curtain, operation convenience is improved, and the fool-proof backflow-preventing fan wall structure is provided for a server case.

Description

TECHNICAL FIELD

[0001] The utility model relates to server technical field especially relates to a kind of fan wall structure of preventing backflow of preventing stupid, heat dissipation mechanism and server case. BACKGROUND

[0002] At present, with the development of Internet technology, servers have various configurations, and the heat dissipation of servers with different configurations varies in wattage. According to actual conditions, various specifications of fans need to be configured. In order to meet the heat dissipation requirements of servers, a fan wall is usually arranged inside the server case. The fan wall divides the inside of the case into two areas: the front end area is called a cold air area, and the side wall of the case body in the front end area has an air inlet hole to introduce low-temperature gas from outside into the cold air area; the rear end area is called a hot air area, and various working devices such as a mainboard and a CPU are installed in the rear end area. The working devices such as the mainboard and the CPU generate heat when working, which causes the gas in the area to be heated to high-temperature gas. A plurality of fan mounting cavities are provided on the fan wall to mount fans, and each fan is used to blow the low-temperature gas in the cold air area into the hot air area. The side wall of the case body in the rear end area is provided with an air outlet hole, and the high-temperature gas mixed with the low-temperature gas in the cold air area is discharged to the outside of the server case by the blowing force of the fan. As a core component of the heat dissipation system, the fan wall realizes forced convection of air between the cold air area and the hot air area through the cooperative work of the plurality of fans, promotes the rapid discharge of the high-temperature gas in the hot air area, and thus effectively reduces the temperature inside the case.

[0003] In actual application, when the running load of the server is not high, the heat dissipation requirement of the server is also relatively low. At this time, it is not necessary to install a fan in all fan mounting cavities. In the case where no fan is installed in part of the fan mounting cavities, the high-temperature gas in the hot air area will flow back to the cold air area through the vacant position without a fan and mix with the external cold air in the cold air area, forming hot air backflow. The low-temperature air that should be used to cool the server is heated by the high-temperature gas, which increases the temperature of the low-temperature gas blown by the fan, reduces the heat dissipation efficiency, and causes the temperature of the server to rise, which may trigger the overheat protection mechanism and affect the stable operation of the server. In order to solve the problem of hot air backflow, it is usually necessary to manually insert a baffle in the vacant position of the fan wall. The baffle can effectively block the hole position without a fan and prevent hot air backflow to the cold air area.

[0004] However, in actual operation, part of the cases do not provide baffles for the vacant position of the fan wall in design. Even if the design has a baffle, it is often the case that the operator forgets to insert the baffle in the vacant position of the fan wall, which causes hot air backflow to affect the heat dissipation effect of the server case. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that the prior art does not provide a baffle for the fan wall vacancy in the design of part of the case, even if a baffle is designed, the operator often forgets to insert the baffle in the fan wall vacancy, causing hot air backflow.

[0006] In order to achieve the above object, the utility model provides a prevent stupid formula's fan wall structure of backflow prevention, including fan mounting frame, fan mounting frame is used for installing between the cold air area and hot air area of case main body, a plurality of fan installation cavities are arranged on the fan mounting frame, each fan installation cavity has the cold air inlet and the cold air outlet that are relatively communicated, so as to introduce the low-temperature gas of cold air area into hot air area, the fan mounting frame at each cold air inlet or cold air outlet is equipped with the wind baffle for stopping cold air outlet or cold air inlet, the fan mounting frame at each cold air outlet or cold air inlet is also equipped with elastic reset structure, one end of each wind baffle is fixed end, the other end of each wind baffle is sliding end, each fixed end is fixedly connected with the inner wall of each fan installation cavity, each sliding end is slidably arranged in each fan installation cavity, one end of each elastic reset structure is connected with each fixed end or the inner wall of fan installation cavity, the other end of elastic reset structure is connected with each sliding end.

[0007] Each sliding end can be slid close to the fixed end under external force, so that each wind baffle is folded to remove the stop of cold air outlet or cold air inlet, and the elastic reset structure can drive the sliding end to reset.

[0008] Preferably, each wind baffle is arranged at each cold air outlet, and each sliding frame is arranged at the two ends of the cold air outlet of each fan mounting frame, each sliding frame is provided with a sliding groove on the side wall, each sliding end is provided with a sliding block matched with each sliding groove, and each sliding block is slidably arranged in each sliding groove.

[0009] Preferably, a plurality of partitions are arranged on each fan mounting frame, and each partition divides the fan mounting frame into a plurality of fan installation cavities, and one end of each partition close to the cold air outlet is fixedly connected with the sliding frame.

[0010] Preferably, each sliding groove is further provided with a limiting baffle, and each limiting baffle is used for preventing each sliding end from sliding out of the sliding groove.

[0011] Preferably, the elastic reset structure comprises a plurality of reset springs and a plurality of guide columns, each guide column is vertically arranged, the bottom of the fan mounting frame is provided with a fixed seat, each guide column is fixed on the fixed seat, each reset spring and each wind baffle are sleeved on each guide column, one end of the reset spring is fixedly connected with the fixed seat, and the other end of the reset spring is connected with the sliding end of the wind baffle.

[0012] Preferably, two guide columns are installed in each fan mounting cavity, and the two guide columns are arranged on both sides of the sliding end, and two through holes for avoiding the guide columns are formed in the sliding end.

[0013] Preferably, the elastic reset structure comprises a plurality of elastic ropes, two elastic ropes are installed in each fan mounting cavity, and the two elastic ropes are arranged on both sides of the sliding end, one end of each elastic rope is connected with the top wall of the fan mounting cavity, and the other end of each elastic rope is connected with the sliding end of the wind screen.

[0014] The utility model also provides a kind of heat dissipation structure, including above-mentioned fool-proof backflow-preventing fan wall structure, also including fan module, one side of each fan module is equipped with pressing plate each fan module is installed in each fan mounting cavity, make pressing plate drive sliding end to slide towards fixed end, make wind screen fold.

[0015] The utility model also provides a kind of server case, including above-mentioned heat dissipation structure.

[0016] Compared with the prior art, the utility model embodiment a kind of fool-proof backflow-preventing fan wall structure, heat dissipation mechanism and server case, which has the beneficial effects that:

[0017] By setting the foldable wind screen at the cold air outlet or the cold air inlet in each fan mounting cavity, when the fan module is installed in place, the fan module acts on the sliding end of the wind screen, so that the sliding end of the wind screen slides towards the fixed end to release the blocking of the cold air outlet or the cold air inlet, ensuring the normal operation of the fan module and not affecting the air circulation and heat dissipation efficiency in the case. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the fan wall explosion map of the utility model embodiment;

[0019] Figure 2 is the fan module installation schematic view of the utility model embodiment;

[0020] Figure 3 is the fan module installation sectional view of the utility model embodiment;

[0021] Figure 4 is the wind screen unfolded state schematic view of the utility model embodiment;

[0022] Figure 5 is a schematic diagram of a wind screen in a contracted state according to an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of a partition structure according to an embodiment of the present application;

[0024] Figure 7 is an exploded view of a fan module wall according to an embodiment of the present application Figure 1 ;

[0025] Figure 8 is an exploded view of a fan module wall according to an embodiment of the present application Figure 2 ;

[0026] Figure 9 is an exploded view of a server case according to an embodiment of the present application;

[0027] Figure 10 is a schematic diagram of a server case according to an embodiment of the present application, in which each fan installation cavity is installed with a fan;

[0028] Figure 11 is a schematic diagram of a server case according to an embodiment of the present application, in which part of the fan installation cavities are installed with fans.

[0029] In the figure, 1, fan installation rack; 2, fan module; 3, fan installation cavity; 4, cold air inlet; 5, cold air outlet; 6, wind screen; 7, fixed end; 8, sliding end; 9, sliding rack; 10, sliding groove; 11, sliding block; 12, partition; 13, limiting baffle; 14, return spring; 15, guide column; 16, fixed seat; 17, pressing plate; 18, installation box; 19, shock absorbing glue nail; 20, fan body; 21, fixed plate; 22, case main body; 23, sealing strip; 24, fan control board; 25, upper cover; 26, cold air area; 27, hot air area; 28, air inlet; 29, air outlet. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0031] In the description of the present application, it should be understood that the term "fan control board" is used in the present application, and the fan control board is a control module of the fan in the server case. The fan control board can monitor the running state of the fan inside the server in real time, including the speed, working temperature, fault alarm and other information of the fan. By monitoring these information, the administrator can timely understand the heat dissipation condition of the server to ensure the normal operation of the server. The fan control board can also automatically adjust the speed of the fan according to the working load and temperature condition of the server.

[0032] As Figure 1 shown, the utility model embodiment preferred embodiment's one kind prevents the fan wall structure of backflow, including fan mounting frame 1, fan mounting frame 1 is used to install between the cold air area 26 and hot air area 27 of case main body 22, fan mounting frame 1 is provided with several fan installation cavities 3, each fan installation cavity 3 all has the cold air inlet 4 and cold air outlet 5 of relatively intercommunication, to introduce the low-temperature gas of cold air area 26 into hot air area 27, the fan mounting frame 1 at each cold air inlet 4 or cold air outlet 5 all is equipped with the wind curtain 6 for stopping cold air outlet 5 or cold air inlet 4, the fan mounting frame 1 at each cold air outlet 5 or cold air inlet 4 still is equipped with elastic reset structure, the one end of each wind curtain 6 is fixed end 7, the other end of each wind curtain 6 is sliding end 8, each fixed end 7 is fixedly connected with the inner wall of fan installation cavity 3, each sliding end 8 is slidably arranged in fan installation cavity 3, the one end of each elastic reset structure all is connected with each fixed end 7 or the inner wall of fan installation cavity 3, the other end of elastic reset structure all is connected with each sliding end 8.

[0033] Each sliding end 8 can be slid by external force to approach fixed end 7, make each wind curtain 6 fold to remove the stop of cold air outlet 5 or cold air inlet 4, and elastic reset structure can drive sliding end 8 reset. Thus when the sliding end 8 of wind curtain 6 is slid by external force to approach the direction of fixed end 7, wind curtain 6 folds to remove the stop of cold air outlet 5 or cold air inlet 4, does not affect the air circulation and heat dissipation efficiency in the case, and when the external force disappears, the sliding end 8 of wind curtain 6 is driven by elastic reset structure to slide to the direction away from fixed end 7, so that each wind curtain 6 unfolds to restore the stop of cold air outlet 5 or cold air inlet 4, effectively prevent hot air backflow.

[0034] Specifically, each wind curtain 6 is arranged at each cold air outlet 5, and the fan mounting frame 1 is provided with a sliding frame 9 at both ends of each cold air outlet 5. The first mounting hole is formed in the sliding frame 9, and the second mounting hole is formed in the side wall of the fan mounting frame 1 corresponding to the sliding frame 9. The sliding frame 9 is mounted on the fan mounting frame 1 by screwing the first mounting hole and the second mounting hole. The sliding groove 10 is formed in the side wall of the sliding frame 9. The sliding block 11 is arranged on both sides of the sliding end 8 and cooperates with the sliding groove 10. The sliding block 11 is slidably arranged in the sliding groove 10. The sliding block 11 slides in the sliding groove 10 to drive the sliding end 8 to slide in the fan installation cavity 3, so that the wind curtain 6 is folded or unfolded. The cooperation between the sliding groove 10 and the sliding block 11 at both ends ensures the stability of the sliding end.

[0035] Specifically, a plurality of partitions 12 are arranged on each fan mounting rack 1, and each partition 12 divides the fan mounting rack 1 into a plurality of fan mounting cavities 3. One end of each partition 12 close to the cold air outlet 5 is fixedly connected with a sliding frame 9. The sliding frame 9 is fixedly connected with the partition 12, and preferably, the sliding frame 9 is integrally formed with the partition 12. Each fan mounting cavity 3 is separated by the partition 12, and the sliding frame 9 fixedly connected with the partition 12 is arranged, so that the partition 12 is detachably connected with the fan mounting rack 1 through the sliding frame 9, the installation process is simplified, and the operation convenience is improved.

[0036] Specifically, each sliding slot 10 is further provided with a limiting baffle 13, and each limiting baffle 13 is used for preventing each sliding end 8 from sliding out of the sliding slot 10, so as to ensure the safety and stability of the wind screen 6 during the expansion and contraction process.

[0037] Specifically, the elastic return structure includes a plurality of return springs 14 and a plurality of guide columns 15. Each guide column 15 is vertically arranged, and the bottom of the fan mounting rack 1 is provided with a fixed seat 16. Each guide column 15 is fixed on the fixed seat 16. Each return spring 14 and each wind screen 6 are sleeved on each guide column 15. One end of each return spring 14 is fixedly connected to the fixed seat 16, and the other end of each return spring 14 is connected to the sliding end 8 of each wind screen 6.

[0038] Specifically, the top of the fixed seat 16 is welded with a first connecting lug, one end of the return spring 14 is fixedly connected to the first connecting lug, the sliding end 8 of the wind screen 6 is provided with a second connecting lug, and the other end of the return spring 14 is fixedly connected to the second connecting lug. When the wind screen 6 is subjected to an external force, the guide column 15 provides guidance for the sliding end 8 of the wind screen 6 during the folding process of the wind screen 6 caused by the downward movement of the sliding end 8, and the guide column 15 can avoid the return spring 14 from tilting during the process of being compressed to accumulate elastic potential energy, thereby improving the stability of the folding process of the wind screen 6. When the external force disappears, the return spring 14 releases the elastic potential energy, drives the sliding end 8 of the wind screen 6 to slide upward, and restores the wind screen 6 to the unfolded state. The guide column 15 provides guidance for the sliding end 8 of the wind screen 6 and the return spring 14, ensures the stability and accuracy of the wind screen 6 during the expansion and contraction process, and improves the structural stability of the entire fan wall.

[0039] Specifically, two guide columns 15 are arranged in each fan mounting cavity 3, and the two guide columns 15 are arranged on both sides of each sliding end 8. Two through holes for avoiding the guide columns 15 are formed in each sliding end 8, which further improves the stability of the wind screen 6 during the expansion and contraction process.

[0040] In other embodiments, the elastic reset structure comprises a plurality of elastic ropes, two elastic ropes are installed in each fan mounting cavity 3, and the two elastic ropes are arranged on the two sides of the wind screen 6, one end of each elastic rope is connected with the top wall of the fan mounting cavity 3, and the other end of each elastic rope is connected with the sliding end 8 of the wind screen 6.

[0041] In other embodiments, each fan mounting cavity 3 is provided with one guide column 15.

[0042] In other embodiments, each fan mounting cavity 3 is provided with more than two guide columns 15.

[0043] In other embodiments, each wind screen 6 is arranged at each cold air inlet 4, and one end of each baffle 12 close to each cold air inlet 4 is fixedly connected with a sliding frame 9, both sides of each sliding end 8 are provided with a sliding block 11 matched with each sliding groove 10, each sliding block 11 is slidingly arranged in each sliding groove 10, and each sliding block 11 drives each wind screen 6 to fold or unfold when sliding in the sliding groove 10.

[0044] The cooling structure of the preferred embodiment of the embodiment of the utility model, including above-mentioned prevent fooling formula backflow's fan wall structure, still include fan module 2, one side of each fan module 2 is equipped with the pressing plate 17, each fan module 2 is installed in each fan mounting cavity 3, make the pressing plate 17 drive sliding end 8 to the fixed end 7 sliding, make wind screen 6 fold.

[0045] When the fan module 2 is installed, the pressing plate 17 acts on the sliding end 8, drives the sliding end 8 to slide in the direction close to the fixed end 7 to make the wind screen 6 fold to remove the stop of the cold air outlet 5 or the cold air inlet 4, does not affect the air circulation and the heat dissipation efficiency in the case, when the fan module 2 is disassembled, the elastic reset structure drives the sliding end 8 to slide in the direction away from the fixed end 7 to make the wind screen 6 unfold to restore the stop of the cold air outlet 5 or the cold air inlet 4, effectively prevents the hot air backflow.

[0046] Specifically, the fan module 2 comprises a mounting box 18, a damping rubber nail 19, a fan body 20 and a fixed plate 21, the fan body 20 is fixedly installed in the mounting box 18, the fan body 20 is fixed in the specified position in the fan wall through the mounting box 18, and the fan is prevented from shaking or shifting during operation; the fixed plate 21 is used for further reinforcing the connection of the fan body 20 and the mounting box 18, and the stability of the fan during operation is ensured.

[0047] Specifically, the mounting box 18, the fan body 20 and the fixed plate 21 are provided with connecting holes on the circumferential side, the three are fixedly connected through the damping rubber nail 19, the damping rubber nail 19 can also reduce the vibration and noise generated when the fan operates, and the overall mute performance of the server is improved.

[0048] Specifically, the heat dissipation structure further comprises a locking structure, the locking structure comprises an elastic buckle and a limiting clamping groove, the limiting clamping groove is matched with the shape of the elastic buckle, the elastic buckle is arranged on the side wall of the fan module 2, and the limiting clamping groove is arranged on the side wall of the fan mounting cavity 3. When the fan module 2 is installed, the elastic buckle is gradually deformed with the insertion of the fan module 2, and is bounced back when reaching the position of the limiting clamping groove, so as to be firmly clamped in the limiting clamping groove, and the fan module 2 is locked in the fan mounting cavity 3.

[0049] The server case of the preferred embodiment of the utility model embodiment, including above-mentioned heat dissipation structure still includes case main part 22, sealing strip 23, fan control panel 24 and upper cover 25, fan wall sets up in case main part 22, and fan wall divides case main part 22 into two areas: the side wall of front end area case main part 22 has air inlet 28 to introduce external cold air, is called cold air area 26;The rear end area is installed with mainboard, CPU and various working devices, and the mainboard, CPU and various working devices work and heat, so that the air temperature of this part is higher, and is called hot air area 27, and the side wall of rear end area case main part 22 is equipped with air outlet 29 to discharge the high-temperature gas of hot air area 27 to the outside of case main part 22;Sealing strip 23 is arranged at the closure of case main part 22, such as door plate, side plate and the like, to provide the tight sealing effect;Upper cover 25 is arranged at the top of case main part 22, for closing the internal space of case main part 22 and protecting internal hardware.

[0050] The working process of the utility model is as follows:

[0051] The operator installs the fan module 2 into the fan mounting cavity 3, and installs the fan module 2 downwards, the guide column 15 passes through the through hole on the pressing plate 17 to guide the installation of the fan module 2, the pressing plate 17 of the fan module 2 acts on the sliding end 8 of the wind curtain 6, and along with the downward pushing of the fan module 2, the sliding end 8 of the wind curtain 6 slides downwards along the sliding groove 10 to drive the folding process of the wind curtain 6, the guide column 15 passes through the through hole on the sliding end 8 to guide the sliding end 8, and the guide column 15 can avoid the inclination of the reset spring 14 in the process of accumulating elastic potential energy, when the fan module 2 is installed in place, the wind curtain 6 is folded to release the blocking of the cold air outlet, so that the normal work of the fan module 2 is ensured, and the air circulation and heat dissipation efficiency in the cabinet are not affected, the elastic buckle arranged on the side wall of the fan module 2 is gradually deformed along with the insertion of the fan module 2, and is buckled into the limiting buckle slot on the side wall of the fan mounting cavity 3 when reaching the limiting buckle slot position, so that the fan module 2 is locked in the fan mounting cavity 3; when the fan module 2 needs to be disassembled, a suitable tool is selected to pry the elastic buckle outward, so that the elastic buckle is buckled out of the limiting buckle slot, and the operator disassembles the fan module 2, along with the upward movement of the fan module 2, the reset spring 14 releases the elastic potential energy, drives the sliding end 8 of the wind curtain 6 to slide upwards, so that the wind curtain 6 returns to the unfolded state, the blocking of the cold air outlet is recovered, hot air backflow is effectively prevented, the heat dissipation effect of the server cabinet is ensured, the guide column 15 guides the sliding end 8 of the wind curtain 6 and the reset spring 14, and the stability and accuracy of the wind curtain 6 in the telescopic process are ensured.

[0052] In conclusion, the utility model discloses a kind of fan wall structure, heat dissipation mechanism and server cabinet of foolproof backflow prevention, by being provided with foldable wind curtain at the cold air outlet or cold air inlet in each fan mounting cavity, when fan module is installed in place, fan module acts on the sliding end of wind curtain, so that the sliding end of wind curtain slides in the direction close to fixed end to release the blocking of cold air outlet or cold air inlet, ensure the normal work of fan module, do not affect the air circulation and heat dissipation efficiency in cabinet, when fan module is disassembled, under the action of elastic reset structure, the sliding end of wind curtain slides in the direction away from fixed end to unfold wind curtain, recover the blocking of cold air outlet or cold air inlet, effectively prevent hot air backflow, ensure the heat dissipation effect of server cabinet is not affected.This design does not need operator to manually insert or take out wind curtain, reduce the error of human operation, improve the convenience of operation, provide a kind of fan wall structure of foolproof backflow prevention for server cabinet.

[0053] The above only describes preferred embodiments of the utility model, and it should be pointed out that for ordinary technical personnel in the prior art, without departing from the technical principles of the utility model, a plurality of improvements and replacements can be made, and these improvements and replacements should be regarded as the protection scope of the utility model.

Claims

1. A fool-proof backflow-preventing fan wall structure, comprising a fan mounting frame (1) for being mounted between a cold air area (26) and a hot air area (27) of a cabinet main body (22), wherein a plurality of fan mounting cavities (3) are arranged on the fan mounting frame (1), each of the fan mounting cavities (3) has a cold air inlet (4) and a cold air outlet (5) in communication with each other, so as to introduce low-temperature gas in the cold air area (26) into the hot air area (27), characterized in that: Each of the fan mounting frames (1) at the cold air inlets (4) or the cold air outlets (5) is provided with a wind curtain (6) for blocking the cold air outlet (5) or the cold air inlet (4), and is further provided with an elastic reset structure, one end of each of the wind curtains (6) is a fixed end (7), the other end of each of the wind curtains (6) is a sliding end (8), each of the fixed ends (7) is fixedly connected with the inner wall of the fan mounting cavity (3), each of the sliding ends (8) is slidingly arranged in the fan mounting cavity (3), one end of each of the elastic reset structures is connected with the fixed end (7) or the inner wall of the fan mounting cavity (3), and the other end of each of the elastic reset structures is connected with the sliding end (8). Each of the sliding ends (8) can be slid to the fixed end (7) under an external force, so that each of the wind curtains (6) is folded to release the blocking of the cold air outlet (5) or the cold air inlet (4), and the elastic reset structure can drive the sliding end (8) to reset.

2. A fool-proof backdraft-preventing fan wall structure according to claim 1, characterized in that: Each of the wind curtains (6) is arranged at the cold air outlet (5), and each of the fan mounting frames (1) is provided with a sliding frame (9) at both ends of the cold air outlet (5), a sliding groove (10) is formed in the side wall of each of the sliding frames (9), each of the sliding ends (8) is provided with a sliding block (11) matched with the sliding groove (10), each of the sliding blocks (11) is slidingly arranged in the sliding groove (10), and each of the sliding blocks (11) drives each of the wind curtains (6) to fold or unfold when sliding in the sliding groove (10).

3. A fool-proof, backdraft-preventing fan wall structure according to claim 2, characterized in that: A plurality of partition plates (12) are arranged on each of the fan mounting frames (1) at intervals, each of the partition plates (12) divides the fan mounting frame (1) into a plurality of fan mounting cavities (3), and one end of the partition plate (12) close to the cold air outlet (5) is fixedly connected with the sliding frame (9).

4. A fool-proof backdraft-preventing fan wall structure according to claim 3, characterized in that: The top of each of the sliding grooves (10) is further provided with a limiting baffle (13), and each of the limiting baffles (13) is used to prevent the sliding end (8) from sliding out of the sliding groove (10).

5. A fool-proof, backdraft-preventing fan wall structure according to claim 4, characterized in that: The elastic reset structure comprises a plurality of reset springs (14) and a plurality of guide columns (15), each of the guide columns (15) is vertically arranged, the bottom of the fan mounting frame (1) is provided with a fixed seat (16), each of the guide columns (15) is fixed on the fixed seat (16), each of the reset springs (14) and each of the wind curtains (6) are sleeved on each of the guide columns (15), one end of the reset spring (14) is fixedly connected with the fixed seat (16), and the other end of the reset spring (14) is connected with the sliding end (8) of the wind curtain (6).

6. A fool-proof, backdraft-preventing fan wall structure according to claim 5, characterized in that: Two guide columns (15) are arranged in each of the fan mounting cavities (3) at intervals, and the two guide columns (15) are arranged on both sides of each of the sliding ends (8), and two through holes for avoiding the guide columns (15) are formed in each of the sliding ends (8).

7. A fool-proof, backdraft-preventing fan wall structure according to claim 4, characterized in that: The elastic reset structure comprises a plurality of elastic ropes, two elastic ropes are arranged in each fan mounting cavity (3) at intervals, two elastic ropes are arranged on both sides of each sliding end (8), one end of each elastic rope is connected with the top wall of the fan mounting cavity (3), and the other end of each elastic rope is connected with the sliding end (8) of the wind screen (6).

8. A heat dissipating structure characterized by: The fan wall structure with fool-proof and backflow prevention function comprises a plurality of fan modules (2) and a plurality of wind screens (6). Each fan module (2) is provided with a pressing plate (17) on one side, each fan module (2) is arranged in each fan mounting cavity (3), the pressing plate (17) drives the sliding end (8) to slide towards the fixed end (7), and the wind screen (6) is folded.

9. A server chassis, characterized by: The heat dissipation structure comprises the fan wall structure with fool-proof and backflow prevention function.

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