Fan module and server

Abstract

The application provides a fan module and a server, and relates to the technical field of electronic equipment cooling. The fan module comprises a fan shell, at least one fan structure, a flow guide structure and a noise reduction structure. The flow guide structure changes the airflow direction entering the fan structure, so that the airflow entering the air inlet more smoothly enters the fan structure, the occurrence of turbulence is reduced, and thus the vibration of the fan structure is reduced. The noise generated by the fan structure enters the noise reduction space, and the noise generated by the fan structure is absorbed through the noise reduction space. The noise reduction structure and the flow guide structure solve the problem that the performance of components such as hard disks in the server is reduced due to noise and air vibration.

Description

Technical Field

[0001] This application relates to the field of electronic device cooling technology, and in particular to a fan module and a server. Background Technology

[0002] With the development of artificial intelligence (AI), high-performance computing (HPC), and cloud computing, the performance requirements of servers, as the core computing power carriers of data centers, are growing exponentially. However, when servers process large amounts of data and perform complex computing tasks, the various electronic components within the server generate significant heat. If this heat cannot be dissipated in a timely manner, it will affect the stable operation of the server.

[0003] Currently, in order to dissipate heat from inside servers, high-speed fans are usually installed inside the servers. These high-speed fans remove heat through forced convection and heat conduction.

[0004] However, high-speed fans inevitably generate noise and air vibrations, which can reduce the performance and efficiency of internal server components such as hard drives. Utility Model Content

[0005] This application provides a fan module and server to solve the problem of noise and air vibration reducing the performance of internal components such as hard drives in servers.

[0006] In a first aspect, this application provides a fan module, including:

[0007] The fan housing has at least one mounting cavity inside; the fan housing has an air inlet and an air outlet on opposite sides that communicate with the mounting cavity;

[0008] At least one fan structure is disposed within the mounting cavity;

[0009] A flow guiding structure is disposed on the air inlet side of the fan housing; the flow guiding structure changes the direction of airflow entering the fan structure;

[0010] A noise reduction structure is disposed between the airflow guiding structure and the fan structure along the airflow direction; at least one noise reduction hole group is provided on the noise reduction structure; there is a gap between the airflow guiding structure and the noise reduction structure, and the gap between the airflow guiding structure and the noise reduction structure is a noise reduction space, which absorbs the noise generated by the fan structure.

[0011] By setting up noise reduction and airflow guiding structures, the airflow entering the fan structure through the air inlet is made smoother, reducing turbulence and thus reducing fan structure vibration; the noise generated by the fan structure enters the noise reduction space and is absorbed by the noise reduction space; thus solving the problem of noise and air vibration causing a reduction in the performance of internal server components such as hard drives.

[0012] This application provides a fan module, wherein the airflow guiding structure includes:

[0013] A flow guide body, wherein at least one air inlet is provided on the flow guide body; the air inlet is arranged in accordance with the fan structure along the airflow direction;

[0014] At least one guide vane, the extension direction of which is angled to the guide body; the guide vane changes the direction of airflow entering the air inlet.

[0015] By setting the air guide plate, the airflow direction entering the air inlet can be changed, allowing the airflow to enter the fan structure more smoothly and solving the problem of airflow turbulence.

[0016] This application provides a fan module in which the extension direction of the air guide plate forms an angle α with the air guide body, wherein the range of α is greater than or equal to 30° and less than or equal to 60°.

[0017] By limiting the range of α, the optimal flow guidance effect can be ensured.

[0018] This application provides a fan module, wherein the fan housing includes:

[0019] Outer shell;

[0020] The handle structure is rotatably connected to the top of the outer shell body; the handle structure includes a handle state away from the outer shell body and an air-guiding state close to the outer shell body; when the handle structure is in the air-guiding state, part of the handle structure is located at the air outlet and changes the airflow direction of the air outlet.

[0021] By setting the handle structure, on the one hand, it is convenient to lift the outer shell body, which has the advantage of quick disassembly; on the other hand, the handle structure can change the direction of airflow at the air outlet, avoiding the airflow from floating upwards at the air outlet and affecting the heat dissipation effect.

[0022] This application provides a fan module, the fan structure comprising:

[0023] Fan compartment;

[0024] The fan body is rotatably mounted inside the fan housing.

[0025] By placing the fan body inside the fan compartment, the fan compartment serves to limit the position of the fan body, thereby increasing assembly efficiency.

[0026] This application provides a fan module, wherein the fan structure further includes:

[0027] A connector adapted to pass through the fan housing and the fan body; the connector is threaded, and the fan body is connected to the fan housing by means of a threaded engagement with a nut on the connector.

[0028] By setting the connector, the fan housing can be adapted to different models of fan bodies, increasing compatibility.

[0029] This application provides a fan module in which one of the fan housing and the outer casing is provided with at least one latch structure and the other is provided with at least one slot; the latch structure engages with the slot.

[0030] The fan compartment and the outer shell are connected by a snap-fit ​​mechanism, which has the advantage of being easy to install and disassemble.

[0031] Secondly, this application provides a server, including a chassis base and a fan module connected to the chassis base as described in any one of the first aspects.

[0032] This application provides a server in which one of the chassis base and the fan housing is provided with at least one positioning pin and the other is provided with at least one positioning groove; the positioning pin and the positioning groove are engaged.

[0033] The chassis base and the fan are connected by the positioning pin and the positioning slot, which can achieve quick positioning and increase installation efficiency.

[0034] This application provides a server in which one of the chassis base and the fan housing is provided with at least one positioning guide pin and the other is provided with at least one positioning guide groove; the positioning guide pin and the positioning guide groove are engaged.

[0035] The chassis base and the fan are connected by the positioning guide pin and the positioning guide groove, which further increases the installation efficiency.

[0036] This application provides a fan module and a server. The fan module includes a fan housing, at least one fan structure, an airflow guiding structure, and a noise reduction structure. The airflow guiding structure changes the airflow direction entering the fan structure, allowing the airflow entering the fan structure more smoothly, reducing turbulence, and thus reducing the vibration of the fan structure. The noise generated by the fan structure enters the noise reduction space, where the noise generated by the fan structure is absorbed. The noise reduction structure and the airflow guiding structure solve the problem of reduced performance of internal server components such as hard drives caused by noise and air vibration. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0038] Figure 1 An exploded view of a fan module provided in this application;

[0039] Figure 2 This application provides a schematic diagram of the fan housing of a fan module from a first angle.

[0040] Figure 3 This application provides a second-angle schematic diagram of the fan housing of a fan module.

[0041] Figure 4 This application provides an overall structural diagram of the fan housing of a fan module.

[0042] Figure 5 A schematic diagram of the airflow guiding structure of a fan module provided in this application;

[0043] Figure 6 A schematic diagram of a noise reduction structure for a fan module provided in this application;

[0044] Figure 7 A cross-sectional view of a noise reduction structure for a fan module provided in this application;

[0045] Figure 8 This is a schematic diagram of the fan structure of a fan module provided in this application;

[0046] Figure 9 A schematic diagram of the fan body of a fan module provided in this application;

[0047] Figure 10 A schematic diagram of a fan compartment for a fan module provided in this application;

[0048] Figure 11 A schematic diagram of the overall structure of a server provided in this application;

[0049] Figure 12 This is a partially enlarged schematic diagram of a server provided in this application.

[0050] Figure label:

[0051] 100. Fan housing; 101. Air inlet; 102. Air outlet; 103. Mounting cavity; 110. Main body of the housing; 120. Handle structure; 121. First plate; 122. Second plate; 130. Slot; 140. Positioning slot; 150. Positioning guide slot;

[0052] 200. Fan structure; 210. Fan housing; 220. Fan body; 230. Connector; 231. Thread; 232. Nut; 240. Clamping tongue structure;

[0053] 300. Airflow guiding structure; 301. Air inlet; 310. Airflow guiding body; 320. Airflow guide plate;

[0054] 400. Noise reduction structure; 401. Noise reduction hole group; 402. Noise reduction space;

[0055] 500. Chassis base; 510. Positioning pin; 520. Positioning guide pin.

[0056] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0057] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0058] First, let me explain the terms used in this application:

[0059] Server: A server is a high-performance computer used to store, process, and manage data, applications, or network resources, and to provide various services to clients (such as personal computers, mobile phones, etc.).

[0060] Fans: Fans are a crucial component of server hardware, responsible for maintaining the device at a safe operating temperature and preventing performance degradation or hardware damage due to overheating. They dissipate heat from heat-generating components such as the CPU, GPU, memory, and hard drive through airflow.

[0061] With the development of artificial intelligence (AI), high-performance computing (HPC), and cloud computing, the performance requirements of servers, as the core computing power carriers of data centers, are growing exponentially. However, when servers process large amounts of data and perform complex computing tasks, the various electronic components inside the server generate significant heat. If this heat cannot be dissipated in a timely manner, it will affect the stable operation of the server. Currently, in order to dissipate heat from the server, high-speed fans are usually installed inside the server. These high-speed fans remove heat through forced convection and heat conduction.

[0062] However, high-speed fans inevitably generate noise and air vibrations, which can reduce the performance and efficiency of internal server components such as hard drives.

[0063] To address the aforementioned issues, this application provides a fan module and server. The fan module includes a fan housing, a fan structure, an airflow guiding structure, and a noise reduction structure. The airflow guiding structure alters the airflow direction entering the fan structure, allowing the airflow entering the fan structure more smoothly and reducing turbulence, thereby reducing fan structure vibration. The noise reduction structure absorbs noise generated by the fan structure, further reducing its noise level. Furthermore, the noise generated by the fan structure also enters the noise reduction space, further absorbing the noise, thus solving the problem of noise and air vibration reducing the performance of internal server components such as hard drives.

[0064] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0065] Firstly, such as Figure 1As shown, this embodiment provides a fan module, including a fan housing 100, at least one fan structure 200, a flow guiding structure 300, and a noise reduction structure 400. The fan housing 100 has at least one mounting cavity 103 inside, and air inlets 101 and outlets 102 communicating with the mounting cavities 103 are opened on opposite sides of the fan housing 100. The fan structure 200 is disposed within the mounting cavity 103. The flow guiding structure 300 is disposed on one side of the air inlet 101 of the fan housing 100, changing the direction of airflow entering the fan structure 200. The noise reduction structure 400, along the airflow direction, is disposed between the flow guiding structure 300 and the fan structure 200. The noise reduction structure 400 has at least one noise reduction hole group 401. There is a gap between the flow guiding structure 300 and the noise reduction structure 400, which is a noise reduction space 402, absorbing the noise generated by the fan structure 200.

[0066] By setting up a noise reduction structure 400 and a flow guiding structure 300, the airflow entering through the air inlet 101 can enter the fan structure 200 more smoothly, reducing turbulence and thus reducing the vibration of the fan structure 200. The noise generated by the fan structure 200 will enter the noise reduction space 402, where the noise generated by the fan structure will be absorbed. This solves the problem of noise and air vibration reducing the performance of internal components such as hard drives in the server.

[0067] Specifically, such as Figure 4 As shown, the number of mounting cavities 103 is the same as the number of fan structures 200, and the number of noise reduction hole groups 401 is the same as the number of fan structures 200.

[0068] Among them, such as Figure 6 As shown, the noise reduction aperture group 401 consists of several small noise reduction apertures. Figure 7 As shown, it should be noted that the noise reduction space 402 is a Helmholtz anechoic chamber. When the sound wave enters the Helmholtz anechoic chamber through the noise reduction hole, it will form an air column vibration at the neck of the hole, which will resonate with the air in the cavity and convert the sound energy into heat energy (friction dissipation).

[0069] As an alternative implementation, to further enhance the noise reduction effect, the cavity depth determines the resonant frequency, with deeper cavities absorbing low-frequency noise. Porous sound-absorbing materials (such as polyester fiber or glass wool) can also be filled into the noise reduction space 402 to enhance the broadband sound absorption effect.

[0070] Specifically, such as Figure 2 and Figure 3As shown, in this embodiment, the fan housing 100 has six mounting cavities 103 arranged side by side along the length of the fan housing 100, and the fan structure 200 also has six cavities. It should be noted that the more mounting cavities 103 there are in the fan housing 100, the larger the size of the fan housing 100 will be. The number of mounting cavities 103 in the fan housing 100 can be reasonably increased or decreased according to the reserved space in the server.

[0071] Furthermore, such as Figure 5 As shown, the airflow guiding structure 300 includes an airflow guiding body 310 and at least one airflow guiding plate 320. The airflow guiding body 310 is provided with at least one air inlet 301, and the air inlet 301 is provided in the direction of airflow movement corresponding to the fan structure 200. The airflow guiding plate 320 extends at an angle to the airflow guiding body 310, and the airflow guiding plate 320 changes the direction of the airflow entering the air inlet 301.

[0072] By setting the air guide plate 320, the airflow direction entering the air inlet 301 can be changed, so that the airflow can enter the fan structure 200 more smoothly.

[0073] It should be noted that air tends to maintain its original direction (inertia) when it flows, and the deflector 320 forces a change in its path by physically blocking it.

[0074] Specifically, the airflow guide body 310 has six air inlets 301, each corresponding to a fan structure 200, ensuring that airflow can enter the fan structure 200 through the air inlets 301.

[0075] Furthermore, each air inlet 301 has two air guide plates on opposite sides; as an alternative implementation, each air inlet 301 can be provided with four air guide plates in four directions respectively.

[0076] In this embodiment, the angle between the extension direction of the guide plate 320 and the guide body 310 is α, where α is greater than or equal to 30° and less than or equal to 60°. It should be noted that the angle α should not be too large or too small, as both excessively large and small angles will result in unsatisfactory airflow guidance. When the angle is greater than 60°, the end face of the guide plate 320 is nearly parallel to the end face of the air inlet 101, and the airflow is unlikely to enter through the air inlet 101 under the guidance of the guide plate 320. When the angle is less than 30°, the end face of the guide plate 320 is nearly perpendicular to the direction of the airflow at the end face of the air inlet 101, making it difficult to effectively break the straight flow trend of the airflow, resulting in the guide plate 320 failing to guide the airflow.

[0077] It is understandable that the angle α can be selected according to the actual situation. For example, the angle α can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0078] Specifically, in this embodiment, the angle between the extension direction of the guide plate 320 and the guide body 310 is 45°.

[0079] It should be noted that by setting the guide vane 320, the airflow near the air inlet 101 can enter the mounting cavity 103 along the extension direction of the guide vane, allowing the airflow to enter the fan more smoothly, thereby reducing the generation of turbulence. The vibration of the fan structure 200 mainly comes from mechanical imbalance and airflow disturbance. When the airflow is turbulent (turbulent flow, eddies), the vibration of the fan will increase. Therefore, by setting the guide vane 320 to reduce the occurrence of turbulence, the vibration of the fan structure 200 can be reduced.

[0080] Furthermore, in the fan module provided in this embodiment, the fan housing 100 includes a housing body 110 and a handle structure 120, wherein the handle structure 120 is rotatably connected to the top of the housing body 110, and the handle structure 120 includes a handle state away from the housing body 110 and an air guiding state close to the housing body 110; when the handle structure 120 is in the air guiding state, part of the handle structure 120 is located at the air outlet 102, and changes the airflow direction of the air outlet 102.

[0081] By setting the handle structure 120, on the one hand, it is convenient to lift the outer shell body 110, which has the advantage of quick disassembly; on the other hand, the handle structure 120 can change the direction of the airflow at the air outlet 102, so as to avoid the airflow at the air outlet 102 from floating upward and affecting the heat dissipation effect.

[0082] Specifically, such as Figure 7 As shown, the handle structure 120 includes a first plate 121 and a second plate 122 connected together. The first end of the first plate 121 is rotatably connected to the top of the outer shell body 110, and the second end of the first plate 121 is fixedly connected to one end of the second plate 122. The extension direction of the first plate 121 is set at an angle to the extension direction of the second plate 122. When the handle structure 120 is in the handle state, the first plate 121 is perpendicular to the top surface of the outer shell body 110. At this time, the operator can lift the entire outer shell body 110 by pulling the second plate 122. The handle can avoid directly grasping the edge of the fan body and reduce the risk of hand injury. When the handle structure 120 is in the air guiding state, the first plate 121 is in contact with the top surface of the outer shell body 110. At this time, the second plate 122 is located at the air outlet 102 and changes the airflow direction of the air outlet 102.

[0083] Gas flow generally exhibits an upward floating phenomenon. By placing the second plate 122 at the air outlet 102, the upward floating of airflow is resolved, the loss of air volume is reduced, and the airflow is smoothly introduced into the whole system.

[0084] It should be noted that the angle between the extension direction of the first plate 121 and the extension direction of the second plate 122 should not be too large or too small. If the angle is too large, it will increase wind resistance, and if the angle is too small, it will reduce the air guiding effect. The angle between the extension direction of the first plate 121 and the extension direction of the second plate 122 has the same effect as the angle between the extension direction of the guide plate 320 and the guide body 310.

[0085] In this embodiment, the angle between the extending direction of the first plate 121 and the extending direction of the second plate 122 is greater than or equal to 30° and less than or equal to 60°. Specifically, the first plate 121 and the second plate 122 are integrally formed.

[0086] It is understandable that the angle between the extension direction of the first plate 121 and the extension direction of the second plate 122 can be selected according to the actual situation. For example, the angle α can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0087] Specifically, in this embodiment, the angle between the extending direction of the first plate 121 and the extending direction of the second plate 122 is 45°.

[0088] Furthermore, such as Figure 10 As shown, the fan module provided in this embodiment includes a fan housing 210 and a fan body 220, wherein the fan body 220 is rotatably disposed within the fan housing 210.

[0089] By placing the fan body 220 inside the fan compartment 210, the fan body 220 is positioned to limit its movement, thereby increasing assembly efficiency.

[0090] The fan body 220 is also equipped with a connection terminal, through which the fan body 220 is connected to the power supply.

[0091] Specifically, the fan structure 200 also includes a connector 230, which is adapted to pass through the fan housing 210 and the fan body 220; the connector 230 is provided with a thread 231, and the fan body 220 is connected to the fan housing 210 by the thread 231 on the connector 230 engaging with a nut 232.

[0092] The outer surface of the end of the connector 230 away from the fan compartment 210 is provided with threads 231, and the length of the threads 231 on the connector 230 is determined according to actual needs.

[0093] It should be noted that one side of the fan body 220 abuts against the inner wall of the fan housing 210, and the other side abuts against the nut 232. The fan body 220 is fixed inside the fan housing 210 by connecting the nut 232 with the thread 231. This method of fixing the fan body 220 to the fan housing 210 by connecting the nut 232 with the thread 231 can accommodate different models of fan bodies 220.

[0094] like Figure 8 and Figure 9 As shown, Figure 8 The fan body 220 is larger than Figure 9 The size of the fan body 220 can be adapted to different models of fan body 220 simply by changing the position of the nut 232 on the connector 230.

[0095] In this embodiment, the connector 230 is composed of multiple strands of steel wire, which achieve microscopic sliding and friction through a multi-level twisted structure, converting vibration energy into heat energy. The nonlinear contact damping between the steel wires can attenuate broadband vibrations, thereby further isolating the vibrations generated by the high-speed operation of the fan body 220 from being transmitted to the server.

[0096] Specifically, the fan compartment 210 and the outer casing 110 are provided with at least one latch structure 240 and at least one slot 130; the latch structure 240 engages with the slot 130.

[0097] The fan compartment 210 and the outer casing 110 are connected by a snap-fit ​​mechanism, which has the advantage of being easy to install and disassemble.

[0098] In this embodiment, a latch structure 240 is provided on each of the opposite sides of the fan compartment 210, and a slot 130 is provided on each of the opposite sides of the outer casing 110.

[0099] Secondly, such as Figure 11 and Figure 12 As shown, this embodiment provides a server, including a chassis base 500 and a fan module of any one of the first aspects connected to the chassis base 500.

[0100] Furthermore, the chassis base 500 and the fan housing 100 are provided with at least one positioning pin 510 and at least one positioning groove 140 respectively; the positioning pin 510 and the positioning groove 140 are engaged.

[0101] In this embodiment, a positioning pin 510 is provided on the chassis base 500, and a positioning groove 140 is provided on the fan housing 100.

[0102] Furthermore, at least one positioning guide pin 520 is provided on the chassis base 500 and the fan housing 100, and at least one positioning guide groove 150 is provided on the other; the positioning guide pin 520 and the positioning guide groove 150 are engaged.

[0103] In this embodiment, a positioning guide pin 520 is provided on the chassis base 500, and a positioning guide groove 150 is provided on the fan housing 100.

[0104] It should be noted that both the locating pin 510 and the locating guide pin 520 have a guiding function, which shortens the assembly time and supports tool-less insertion and removal, asymmetrical design or differentiated size, forces the parts to be uniquely aligned and prevents reverse installation.

[0105] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0106] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A fan module, characterized in that, include: The fan housing (100) has at least one mounting cavity (103) inside; the fan housing (100) has an air inlet (101) and an air outlet (102) on opposite sides that communicate with the mounting cavity (103). At least one fan structure (200) is disposed within the mounting cavity (103); A flow guiding structure (300) is disposed on one side of the air inlet (101) of the fan housing (100); the flow guiding structure (300) changes the direction of airflow entering the fan structure (200); A noise reduction structure (400) is disposed between the airflow guiding structure (300) and the fan structure (200) along the airflow direction; at least one noise reduction hole group (401) is provided on the noise reduction structure (400); there is a gap between the airflow guiding structure (300) and the noise reduction structure (400), and the gap between the airflow guiding structure (300) and the noise reduction structure (400) is a noise reduction space (402), which absorbs the noise generated by the fan structure (200).

2. The fan module according to claim 1, characterized in that, The flow guiding structure (300) includes: The airflow guide body (310) has at least one air inlet hole (301) on it; along the airflow direction, the air inlet hole (301) is provided corresponding to the fan structure (200); At least one guide plate (320) is provided, the extension direction of which is angled to the guide body (310); the guide plate (320) changes the direction of the airflow entering the air inlet (301).

3. The fan module according to claim 2, characterized in that, The angle between the extension direction of the guide plate (320) and the guide body (310) is α, where α is greater than or equal to 30° and less than or equal to 60°.

4. The fan module according to any one of claims 1-3, characterized in that, The fan housing (100) includes: Outer shell (110); A handle structure (120) is rotatably connected to the top of the outer shell body (110); the handle structure (120) includes a handle state away from the outer shell body (110) and a wind-guiding state close to the outer shell body (110); when the handle structure (120) is in the wind-guiding state, part of the handle structure (120) is located at the air outlet (102) and changes the airflow direction of the air outlet (102).

5. The fan module according to claim 4, characterized in that, The fan structure (200) includes: Fan compartment (210); The fan body (220) is rotatably disposed within the fan housing (210).

6. The fan module according to claim 5, characterized in that, The fan structure (200) also includes: A connector (230) is adapted to pass through the fan housing (210) and the fan body (220); the connector (230) is provided with a thread (231), and the fan body (220) is connected to the fan housing (210) by means of the thread (231) on the connector (230) engaging with a nut (232).

7. The fan module according to claim 5, characterized in that, The fan compartment (210) and the outer shell body (110) are provided with at least one latch structure (240) and at least one slot (130); the latch structure (240) engages with the slot (130).

8. A server, characterized in that, The system includes a chassis base (500) and a fan module as described in any one of claims 1-7 connected to the chassis base (500).

9. The server according to claim 8, characterized in that, The chassis base (500) and the fan housing (100) are provided with at least one positioning pin (510) on one and at least one positioning groove (140) on the other; the positioning pin (510) and the positioning groove (140) are engaged.

10. The server according to claim 8, characterized in that, The chassis base (500) and the fan housing (100) are provided with at least one positioning guide pin (520) and at least one positioning guide groove (150); the positioning guide pin (520) and the positioning guide groove (150) are engaged.

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