Network device, cabinet, and data center

Abstract

A network device, comprising a front panel, a rear panel, and a fan assembly. The front panel is provided with a plurality of first network components; the rear panel is provided with a plurality of second network components; the fan assembly is arranged on the rear panel; the fan assembly comprises an air duct switching assembly, wherein the air duct switching assembly is configured with a first operating mode and a second operating mode; in the first operating mode, air flows along outer wall surfaces of the first network components and the second network components; and in the second operating mode, air flows along the outer wall surfaces of the first network components. In the present application, the egress interface capacity of a switch is improved without losing online maintenance features of the fan assembly. The fan assembly is adapted to two scenarios: the first network components require cooling, whereas the second network components do not; and the first network components and the second network components all require cooling. During cooling of the first network components, the air resistance is lower, thereby achieving lower fan power consumption.

Description

Network device, cabinet and data center

[0001] The present application claims priority to the Chinese patent application No. 2024113226137, filed on September 23, 2024, entitled "Network device, cabinet and data center", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a network device, a cabinet and a data center. BACKGROUND

[0003] In the field of communication technology, a switch is a network device that expands a network and can provide more connection ports for the network to connect more network devices (such as servers), so the number of external ports that can be provided is one of the key indicators of the switch. The existing network device generally only provides external ports in the front panel, which limits the number of external ports. SUMMARY

[0004] To solve the above problems, the embodiments of the present application provide a network device, a cabinet and a data center. The network device has network component ports provided in the front panel and also has network component ports provided in the rear panel, so that the switch can provide more external ports.

[0005] To this end, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the embodiments of the present application provide a network device, comprising a front panel, a rear panel and a fan assembly. The front panel is provided with a plurality of first network components; the rear panel is provided with a plurality of second network components; the fan assembly is arranged on the rear panel, and the fan assembly comprises a duct switching assembly, the duct switching assembly is provided with a first working mode and a second working mode; wherein, under the driving of the fan assembly, when the duct switching assembly is switched to the first working mode, air flows through the outer wall surfaces of the first network components and the second network components; under the driving of the fan assembly, when the duct switching assembly is switched to the second working mode, air flows through the outer wall surface of the first network components.

[0007] In the embodiments of the present application, considering that the front panel and the rear panel of the network device are generally panels for providing interactive operation, the first network component is configured on the front panel to provide the first port, and the second network component is configured on the rear panel, thereby solving the problem that the switch can only provide external ports on the front panel and the total number of external ports of the switch is limited. Taking a 2U switch as an example, the front panel can generally provide 64 first ports, which cannot meet the demand of providing more external ports, and in the embodiments of the present application, the front panel of the switch can provide 64 first interfaces, and on the premise of guaranteeing the online maintenance function of the fan assembly and the like, the rear panel can further provide at least 32 second ports, and the provision capacity of the external ports of the switch is improved by at least 50%. In addition, the fan assembly is arranged on the rear panel, that is, on the premise that the output interface capacity of the switch is improved, the online maintenance characteristics of the fan assembly are not lost. The fan assembly can take away the heat generated by the second network component, thereby solving the problem that when the fan assembly is plugged into the rear panel, it is difficult to dissipate heat for the second network component also arranged on the rear panel. The air duct switching assembly is provided with a first working mode and a second working mode. When the air duct switching assembly is switched to the first working mode, the fan assembly can take away the heat generated by the first network component and the second network component at the same time; when the air duct switching assembly is switched to the second working mode, the fan assembly can take away the heat generated by the first network component and the second network component, which indicates that the fan assembly can be adapted to two different scenarios through the adjustment of the air duct switching assembly: the first network component needs to be cooled, and the second network component does not need to be cooled; both the first network component and the second network component need to be cooled. When the first network component needs to be cooled and the second network component does not need to be cooled, the air duct switching assembly is switched to the second working mode, and the air resistance is smaller when the fan assembly cools the first network component, and the fan power consumption is lower.

[0008] In one possible implementation, the network device is a switch, the first network component is a first optical module, and the second network component is a second optical module; a plurality of first ventilation openings are formed in the front panel around the first network component; and a second ventilation opening is arranged on the rear panel around the second network component. When the air duct switching assembly is switched to the first working mode, the first ventilation opening and the second ventilation opening are communicated to form a first air duct; under the drive of the fan assembly, the air in the first air duct flows through the outer wall surface of the first optical module to take away the heat generated by the first optical module, and flows through the outer wall surface of the second optical module to take away the heat generated by the second optical module.

[0009] In the implementation, the switch is provided with a plurality of first optical modules on the front panel, and the first ports provided are optical interfaces; the rear panel is also provided with a plurality of second optical modules, and the second ports provided are optical interfaces. At this time, the first optical modules and the second optical modules all need to be cooled, and the fan assembly can simultaneously cool the first optical modules and the second optical modules without losing the online maintenance feature of the fan assembly.

[0010] In a possible implementation, the network device is a switch, the first network component is a first optical module, and the second network component is an electrical module; a plurality of first air vents are formed on the front panel around the first network component; the fan assembly is provided with a third air vent, which is in communication with the outside. When the air duct switching assembly is switched to the second working mode, the first air vent and the third air vent are in communication to form a second air duct; under the drive of the fan assembly, air in the second air duct flows through the outer wall surface of the first optical module to take away the heat generated by the first optical module.

[0011] In the implementation, another switch is provided, the front panel of the switch is provided with a plurality of first optical modules, and the first ports provided are optical interfaces; the rear panel is also provided with a plurality of electrical modules, and the second ports provided are electrical interfaces. At this time, the first optical modules need to be cooled, the electrical modules do not need to be cooled because they do not generate heat, and the fan assembly needs to cool the first optical modules without losing the online maintenance feature of the fan assembly. Wherein, the air of the fan assembly flows through the surface of the first optical module and is directly discharged to the outside, without flowing through the outer wall surface of the electrical module, so that the air resistance is smaller and the fan power consumption is lower.

[0012] In a possible implementation, the fan assembly further includes a first mounting bracket, and the air duct switching assembly includes an air deflector, which is rotationally connected to the first mounting bracket. Wherein, the air deflector is rotated to the first position, and the air duct switching assembly is switched to the first working mode; the air deflector is rotated to the second position, and the air duct switching assembly is switched to the second working mode.

[0013] In the implementation, a first example of the air duct switching assembly is provided. In the first example, the air duct switching assembly includes an air deflector, which is simpler in structure and lower in cost.

[0014] In a possible implementation, the fan assembly further comprises a first fan, the interior of the first mounting bracket is a cavity structure, the cavity structure is provided with a first slot, a second slot and a third vent, the first fan is fixedly installed in the first slot, and the air deflector is rotatably installed in the second slot; a plurality of first vents are arranged on the front panel around the first network component; a second vent is arranged on the rear panel around the second network component. When the air deflector rotates to a first position, the first slot and the second slot are communicated, the first vent, the first slot, the second slot and the second vent form a first air duct, and the air duct switching assembly is switched to a first working mode; when the air deflector rotates to a second position, the first slot and the third vent are communicated, the first vent, the first slot and the third vent form a second air duct, and the air duct switching assembly is switched to a second working mode.

[0015] In this implementation, the specific structures of the first fan, the air deflector and the first mounting bracket are limited. By rotating the air deflector, the air of the first fan can be switched between flowing out of the second slot and flowing out of the third vent, so that switching between the first air duct and the second air duct is realized.

[0016] In a possible implementation, the fan assembly comprises a second fan and a second mounting bracket, the second fan is connected to the air duct switching assembly, and the air duct switching assembly and the second mounting bracket are slidingly connected. When the second fan slides to a third position, the air duct switching assembly is switched to a first working mode; when the second fan slides to a fourth position, the air duct switching assembly is switched to a second working mode.

[0017] In this implementation, a second example of the air duct switching assembly is provided. In the second example, the air duct switching assembly comprises a second fan, and the second fan can slide to different positions, so that the air duct switching assembly is switched to different working modes. This implementation is more convenient for controlling the position of the second fan and is easy to realize automatic control of the position of the second fan.

[0018] In a possible implementation, the air duct switching assembly comprises a sliding rail assembly, the sliding rail assembly is connected with the second fan and the second mounting bracket respectively, and the sliding rail assembly drives the second fan to slide to the third position and the fourth position.

[0019] In this implementation, the sliding rail assembly can be implemented by a screw nut, a gear and a rack or the like. The specific implementation of the sliding rail assembly is not limited in the embodiments of the application.

[0020] In a possible implementation, the fan assembly comprises a third fan and a third mounting bracket, the third fan is connected to the air duct switching assembly, and the air duct switching assembly and the third mounting bracket are rotatably connected. When the third fan rotates to a fifth position, the air duct switching assembly is switched to a first working mode; when the third fan rotates to a sixth position, the air duct switching assembly is switched to a second working mode.

[0021] In the implementation, a third example of the air duct switching assembly is provided. In the third example, the air duct switching assembly includes a third fan, and the third fan can be rotated to different positions so that the air duct switching assembly switches to different working modes. The implementation is more convenient for controlling the position of the third fan and easy to realize automatic control of the position of the third fan.

[0022] In a possible implementation, the air duct switching assembly includes a linkage assembly, and the third fan is mounted with the linkage assembly. The linkage assembly is rotationally connected with the third mounting bracket, and the linkage assembly drives the fan to rotate to the fifth position and the sixth position.

[0023] In the implementation, the air duct switching assembly includes a linkage assembly, such as a parallelogram mechanism, which is convenient for controlling the fan to rotate to the fifth position and the sixth position, and has a simple structure and is easy to implement. The embodiments of the present application do not limit the specific implementation of the linkage assembly.

[0024] In a possible implementation, the network device includes a heat generating device and a wind shield. The wind shield can be arranged on the heat generating device to block heat generated by the heat generating device from being transmitted to the heat dissipation air duct of the fan assembly, such as the first air duct and the second air duct described above.

[0025] In the implementation, the network device can include multiple heat generating devices, such as processors, processing circuits, etc. Through the wind shield structure, heat generated by the heat generating device can be blocked from being transmitted to the first air duct and the second air duct, avoiding the adverse effect of heat generated by the heat generating device on the heat dissipation of the first network component and the second network component.

[0026] In a possible implementation, the network device further includes a liquid cooling water inlet, a cold plate, and a liquid cooling water outlet. The cold plate is in communication with the liquid cooling water inlet and the liquid cooling water outlet, respectively. The cold plate is arranged around the heat generating device, and the wind shield is arranged on the cold plate. The cooling medium flows into the liquid cooling water inlet, flows through the cold plate, and flows out of the liquid cooling water outlet.

[0027] In the implementation, the network device is further provided with a liquid cooling device, and the wind shield is arranged on the cold plate to block heat generated by the cooling medium in the cold plate from being transmitted to the heat dissipation channel of the first network component or the first network component and the second network component.

[0028] In a second aspect, the embodiments of the present application provide a cabinet for installing any one of the network devices provided in the first aspect and possible implementation manners thereof, the cabinet comprising a first cabling space arranged at a front side plate and a second cabling space arranged at a rear side plate. The first cabling space is used for accommodating a plurality of first cables connected to a first network component of the front panel, and the first network component is communicatively connected to other network devices through the first cables. The second cabling space is used for accommodating a plurality of second cables connected to a second network component of the rear panel, and the second network component is communicatively connected to other network devices through the second cables.

[0029] In this implementation manner, the cables can be respectively led out from the first cabling space at the front and the second cabling space at the rear to other network devices, thereby meeting the requirement of cabling space at the front and the rear when the front and rear panels of the network device both provide ports.

[0030] In a third aspect, the embodiments of the present application provide a data center comprising a plurality of network devices provided in the first aspect and possible implementation manners thereof. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings needed to be used in the following embodiments or technical descriptions are briefly introduced.

[0032] FIG. 1 is a schematic diagram of a data center network provided in the embodiments of the present application;

[0033] FIG. 2a is a schematic diagram of a perspective view of a switch provided in the embodiments of the present application;

[0034] FIG. 2b is a schematic diagram of a front view of a front panel of a switch provided in the embodiments of the present application;

[0035] FIG. 2c is a schematic diagram of another perspective view of a switch provided in the embodiments of the present application;

[0036] FIG. 2d is a schematic diagram of a front view of a rear panel of a switch provided in the embodiments of the present application;

[0037] FIG. 2e is a schematic diagram of a top view of a switch after removing a top cover provided in the embodiments of the present application;

[0038] FIG. 2f is a schematic diagram of a top view of a switch after removing a top cover, a fan assembly and a power supply assembly provided in the embodiments of the present application;

[0039] FIG. 3a is a schematic diagram of a perspective view of a first example of an air duct switching assembly provided in the embodiments of the present application;

[0040] FIG. 3b is a schematic diagram of a first air duct of the first example of the air duct switching assembly provided in the embodiments of the present application;

[0041] Fig. 3c is a schematic view of the second air duct of the first example of the air duct switching assembly provided in the embodiments of the present application;

[0042] Fig. 4a is a schematic view of the working process of the first air duct of the first example of the air duct switching assembly provided in the embodiments of the present application;

[0043] Fig. 4b is a schematic view of the working process of the second air duct of the first example of the air duct switching assembly provided in the embodiments of the present application;

[0044] Fig. 5a is a schematic view of the first example of the driving assembly of the air deflector of the first example of the air duct switching assembly provided in the embodiments of the present application;

[0045] Fig. 5b is a schematic view of the second example of the driving assembly of the air deflector of the first example of the air duct switching assembly provided in the embodiments of the present application;

[0046] Fig. 5c is a schematic view of the third example of the driving assembly of the air deflector of the first example of the air duct switching assembly provided in the embodiments of the present application;

[0047] Fig. 6a is a schematic view of the second air duct of the second example of the air duct switching assembly provided in the embodiments of the present application;

[0048] Fig. 6b is a schematic view of the first air duct of the second example of the air duct switching assembly provided in the embodiments of the present application;

[0049] Fig. 7a is a schematic view of the working process of the first air duct of the second example of the air duct switching assembly provided in the embodiments of the present application;

[0050] Fig. 7b is a schematic view of the working process of the second air duct of the second example of the air duct switching assembly provided in the embodiments of the present application;

[0051] Fig. 7c is a schematic view of the movement of the fan assembly to the initial position when the sliding rail assembly moves obliquely in the second example of the air duct switching assembly provided in the embodiments of the present application;

[0052] Fig. 7d is a schematic view of the movement of the fan assembly to the intermediate position when the sliding rail assembly moves obliquely in the second example of the air duct switching assembly provided in the embodiments of the present application;

[0053] Fig. 7e is a schematic view of the movement of the fan assembly to the final position when the sliding rail assembly moves obliquely in the second example of the air duct switching assembly provided in the embodiments of the present application;

[0054] Fig. 8a is a schematic view of the second air duct of the third example of the air duct switching assembly provided in the embodiments of the present application;

[0055] Fig. 8b is a schematic view of a first air duct of a third example of the air duct switching assembly provided in the embodiments of the present application;

[0056] Fig. 9a is a schematic view of a working process of the first air duct of the third example of the air duct switching assembly provided in the embodiments of the present application;

[0057] Fig. 9b is a schematic view of a working process of a second air duct of the third example of the air duct switching assembly provided in the embodiments of the present application;

[0058] Fig. 10a is a schematic view of a heat dissipation device of a heat generating device provided in the embodiments of the present application;

[0059] Fig. 10b is a schematic view of a corresponding wind shield of the heat dissipation device of the heat generating device provided in the embodiments of the present application;

[0060] Fig. 11a is a schematic view of a perspective direction of a server provided in the embodiments of the present application;

[0061] Fig. 11b is a schematic view of another perspective direction of the server provided in the embodiments of the present application;

[0062] Fig. 12a is a schematic view of a front view direction of a network equipment group provided in the embodiments of the present application;

[0063] Fig. 12b is a schematic view of a rear view direction of the network equipment group provided in the embodiments of the present application;

[0064] Fig. 12c is a schematic view of a right view direction of the network equipment group provided in the embodiments of the present application; DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0066] The term “and / or” in the present document is used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. The symbol “ / ” in the present document represents the relationship of “or”, for example, A / B represents A or B.

[0067] The terms “first” and “second” and the like in the present description and claims are used to distinguish different objects, rather than to describe a specific order of the objects. For example, the first response message and the second response message are used to distinguish different response messages, rather than to describe a specific order of the response messages.

[0068] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean "an example of" or "an example, only. Any embodiment or design solution described in the embodiments of the present application as "exemplary" or "for example" should not be construed as preferred or superior over other embodiments or design solutions. In fact, the words "exemplary" or "for example" are used to present concepts in a concrete manner.

[0069] In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more, for example, multiple processing units means two or more processing units, and the like; multiple elements means two or more elements, and the like.

[0070] In the description of the embodiments of the present application, unless otherwise specified, "several" means one or more, for example, several processing units means one or more processing units, and the like; several elements means one or more elements, and the like.

[0071] In order to facilitate the understanding of the scheme provided by the embodiments of the present application, first, some terms related to the present scheme are briefly introduced.

[0072] Switch, meaning "switch", also known as network switch, is a network device for forwarding optical and electrical signals, which is used to provide sharing service of network resources, to distribute limited network resources to each client, and mainly includes physical addressing, network topology, error checking, frame sequence and flow control. Optionally, the switch also has other functions, such as support for VLAN (Virtual Local Area Network), support for link aggregation, and even some switches have the function of firewall.

[0073] Server, also known as server, is a device that provides computing services. Since the server needs to respond to service requests and process them, in general, the server should have the ability to bear and guarantee the service. Optionally, the structure of the server includes processor, hard disk, memory, system bus, etc., that is, the architecture of the server is similar to that of a general computer.

[0074] An optical module is a module for data transmission by optical signal. It usually includes an optical transmitter and an optical receiver, and is used for converting electrical signals into optical signals for transmission, or converting optical signals into electrical signals for reception. The optical module is also referred to as an optical interface module, an optical port module, an optical port, etc. Generally, the optical module is a physical interface for connecting optical fiber cables, and the optical module usually has types such as SFP (Small Form-factor Pluggable), LC (Lucent connector), SC (Subscriber Cable), FC (ferrule contactor), ST (Straight Tip), and MPO (Multiple-fiber push-on). The principle of the optical module is to use total reflection of light from a light-dense medium to a light-lean medium to make the optical signal quickly propagate in the optical fiber. The working mode of the optical module mainly includes a single-channel working mode of single-receiving / single-transmitting and a four-channel working mode of four-receiving / four-transmitting. The interface of the optical module is mainly LC duplex, the information transmission is parameterized by wavelength, the core component is a laser, and the transmission distance can reach 5 km to 100 km.

[0075] An electrical module is a module for data transmission by electrical signal. It usually includes an electrical transmitter and an electrical receiver. Generally, the electrical module is a physical interface for transmitting electrical signals, and is used for transmitting and receiving electrical signals. The electrical module is also referred to as an electrical interface module, an electrical port module, an electrical port, etc. The interface of the electrical module is an RJ45 (Registered Jack), which is connected with various copper cables, and the transmission distance is different due to different cable parameters, and the transmission distance can reach 100 m.

[0076] U (Unit) is a unit for representing the external dimensions (such as height) of a network device. Specifically, U is a height unit defined by IEC60297 (19-inch standard), and 1U = 44.45 mm. A 27U cabinet means that the cabinet can effectively accommodate multiple network devices with a total height of 1210 mm (27*44.45 mm).

[0077] Referring to FIG. 1, FIG. 1 shows a schematic diagram of a data center network. As shown in FIG. 1, in the data center network, each switch 1 can interconnect tens of servers 2 together, and then connect hundreds or thousands of servers 2 into a large network through the upper-level switch 1. The more external ports provided by the switch 1, the more servers 2 can be connected. Therefore, as an equipment for expanding the network, if the switch 1 can provide more connection ports in the sub-network, more servers 2 can be connected. Therefore, the number of external ports that can be provided is one of the key indicators of the switch.

[0078] In one solution, the front face of the switch provides external ports, and the rear face is configured with interfaces for pluggable fan modules and power supply components to enable hot plugging and online replacement of the fan modules and power supply components.

[0079] In this solution, since only one face provides external ports, the data of the external ports is limited. For example, a 2U switch can only provide about 64 external ports. However, as the networking scale of data centers becomes larger, the switch is required to provide more external ports. Meanwhile, as the chip technology improves, the number of supported ports also increases. Therefore, the limited number of external ports provided by the switch becomes a bottleneck for the development of the networking scale of data centers.

[0080] Therefore, embodiments of the present application provide a network device, in which a plurality of first network components can be installed on the front panel, and a plurality of second network components can be installed on the rear panel. In one example, the network device is a switch, and the first network components and the second network components are optical modules, so that external ports can be provided on both faces of the switch, and the capability of the switch to provide external ports is improved.

[0081] For example, a 2U switch can provide 64 external interfaces on the front panel, and at least 32 external ports on the rear panel under the premise of ensuring the online maintenance function of hot plugging of fan components, power supply components, and the like. The capability of the switch to provide external ports is improved by at least 50%.

[0082] The embodiments of the present application are described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Those skilled in the art can know that, as the technology develops and new scenarios appear, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems. The first direction, the second direction, and the third direction in the accompanying drawings are used to distinguish the observation angle of the current drawing.

[0083] It should be noted that, in one application scenario, for example, the network device is a switch. The first network component includes a first optical module, and the second network component includes a second optical module. Alternatively, the first network component includes a first optical module, and the second network component includes an electrical module. In another application scenario, the network device is a server, where the first network component includes a first hard drive, and the second network component includes a second hard drive. Below, using a switch as an example, the first network component is described as a first optical module, and the second network component as either an electrical module or a second optical module, but this does not constitute a limitation on the network device. That is, the network device can also be a server or other devices; the relevant implementation methods and technical effects can be found in the description using a switch as an example. The statement that the network components plugged into the front or rear panel include optical modules means that all plugged-in network components can be optical modules, or some can be optical modules and some can be electrical modules.

[0084] As exemplarily shown in Figures 2a-2f, the switch includes a frame 100, a first port 210, and a second port 310. The frame 100 includes a front panel 110 and a rear panel 120. The first port 210 is mounted on the front panel 110 and provides an external port for transmitting optical signals. The second port 310 is mounted on the rear panel 120 and provides an external port for transmitting optical signals.

[0085] As shown in Figure 2a, optionally, the switch includes a frame 100, the frame 100 includes a front panel 110, and a first port 210 is disposed on the front panel 110 for providing a communication interface to the outside world. Each first port 210 corresponds to a first optical module or a first electrical module.

[0086] As shown in Figure 2b, optionally, a plurality of first ventilation openings are provided in the front panel 110, such as through holes 111 shown in the partially enlarged portion of Figure 2b. These through holes 111 are located on the outer side of the first port, providing a channel for airflow when dissipating heat from the first optical module. Optionally, mounting plates 700 are also provided on both sides of the switch. For example, the mounting plates 700 are provided with through holes 710 for fixing the switch.

[0087] As shown in Figure 2c, optionally, the frame 100 includes a rear panel 120, and a second port 310 is disposed on the rear panel 120 for providing a communication interface to the outside world. Each first port 310 corresponds to a second optical module or an electrical module.

[0088] Optionally, the rear panel 120 also houses the fan assembly 400 and the power supply assembly 500, enabling the fan assembly 400 and the power supply assembly 500 to be hot-swapped and maintained online.

[0089] As shown in FIG. 2d, optionally, in the rear panel 120, a plurality of second air vents are arranged, such as a plurality of through holes 121 shown in the partial enlarged portion in FIG. 2d. The plurality of through holes 121 are arranged on the outer side of the second optical module, and are used to provide an air flow channel when the second optical module is cooled.

[0090] As shown in FIG. 2e, an example is shown, in which the first optical module 220 corresponding to the first port 210 is shown, and the fan assembly 400 and the power supply assembly 500 are shown as being located inside the portion of the frame 100.

[0091] As shown in FIG. 2f, an example is shown, in which the second optical module 320 corresponding to the second port 310 is shown.

[0092] Generally, the switch is less used alone, and the switch is generally provided in a group. In an example, a plurality of switches are inserted into a cabinet side by side, the front end face and the rear end face of the cabinet are open, and the plurality of switches are respectively plugged into the cabinet from the front end face. The front end face of the plurality of switches in the cabinet is used to improve the external port service, and the rear end face of the plurality of switches is used to provide an online maintenance service, such as a hot plug of a vulnerable component, such as a fan module, a power supply assembly, and the like.

[0093] In the embodiment of the present application, the frame 100 of the switch is generally provided with a plurality of panels, the first network component is plugged into the front panel, and the second network component is plugged into the rear panel, thereby solving the problem that the switch can only provide external ports on one panel and the total number of external ports of the switch is limited. Taking a 2U switch as an example, the front panel of the switch can provide 64 external interfaces, and on the premise of ensuring the hot plug of the fan assembly, the power supply assembly, and the like, the rear panel can at least provide 32 external ports, and the provision capacity of the external ports of the switch is improved by at least 50%.

[0094] In a possible implementation, the front panel 110 and the rear panel 120 are opposite panels in the frame.

[0095] In this implementation, for a box-type switch, generally, the front end face and the rear end face are used as operable panels to realize communication with devices outside and online maintenance functions. When the front panel 110 of the front end face and the rear panel 120 of the rear end face both provide external ports, the port provision capacity of the switch can be significantly improved. In other implementations, for other types of switches, the front panel 110 and the rear panel 120 can also not be opposite panels in the frame, such as adjacent panels.

[0096] In a possible implementation, the network device further comprises: a fan assembly 400. The fan assembly 400 is plugged to the rear panel 120, and the fan assembly 400 is used to take away the heat generated by the first network component or the first network component and the second network component.

[0097] Generally, due to the fact that the switch is connected to multiple servers at the same time, the influence range of the switch failure is large, so generally, the vulnerable components of the switch are designed to be replaced online without affecting the service, such as fan modules, power supply assemblies, etc. The module to be replaced online occupies the space of the panel, which weakens the ability of the switch to provide external ports.

[0098] In this implementation, the front panel 110 can be understood as a front end that provides external ports, and the rear panel 120 can be understood as a rear end that plugs the fan assembly 400, so the fan assembly 400 plugged to the rear panel 120 can take away the heat generated by the first optical module installed on the front panel 110. The second optical module installed on the rear panel 120 can be understood as an additional optical module, which can provide more external ports compared with the existing solutions, and the heat dissipation problem of the additional optical module needs to be further solved. In the embodiment of the present application, the fan assembly 400 plugged to the rear panel 120 can also dissipate heat for the second optical module installed on the rear panel 120, so although the optical module and the corresponding external port are increased, the fan assembly 400 is not increased, that is, it does not occupy more area of the panel (i.e. the rear panel 120), which improves the utilization efficiency of the rear panel 120 and enables the switch to provide more external ports. That is, the fan assembly 400 can take away the heat generated by the first network component, and can also take away the heat generated by the first network component and the second network component in a "shared" manner.

[0099] In a possible implementation, on the outside of the first network component, the front panel 110 is provided with a plurality of first ventilation openings, and on the outside of the second network component, the rear panel 120 is provided with a plurality of second ventilation openings. The fan assembly 400 comprises: a mounting bracket provided with a plurality of third ventilation openings, the third ventilation openings being in communication with the outside; a fan installed on the mounting bracket; and a duct switching assembly installed on the mounting bracket and used to switch between a first air duct and a second air duct formed when the fan is working. The first air duct refers to an air duct formed by the first ventilation openings and the second ventilation openings, and the fan takes away the heat generated by the first network component and the second network component through the first air duct; the second air duct refers to an air duct formed by the first ventilation openings and the third ventilation openings, and the fan takes away the heat generated by the first network component through the second air duct.

[0100] In the implementation, when the first network component and the second network component generate heat when working, the air duct switching component switches the air duct to the first air duct, and the fan carries away the heat generated by the first network component and the second network component through the first air duct, so as to achieve the purpose of dissipating heat for the first network component and the second network component; when the first network component generates heat when working, and the second network component does not generate heat when working, the air duct switching component switches the air duct to the second air duct, and the fan carries away the heat generated by the first network component through the second air duct, so as to achieve the purpose of dissipating heat for the first network component and the second network component. In this way, when the first network component and the second network component generate heat when working, the first network component and the second network component can be dissipated; when the second network component does not generate heat when working, the air duct is switched to the second air duct, and only the first network component is dissipated, so that the air does not pass through the second air vent around the second network component, reducing the resistance when the air flows, and reducing the power consumption of the fan.

[0101] It can be understood that the air duct switching component has two working modes: a first working mode and a second working mode. The air duct switching component can be switched between the first working mode and the second working mode. When the air duct switching component is switched to the first working mode, a first air duct is formed inside the network device, and when the fan assembly works, the air in the first air duct carries away the heat generated by the first network component and the second network component. When the air duct switching component is switched to the second working mode, a second air duct is formed inside the network device, and when the fan assembly works, the air in the second air duct carries away the heat generated by the first network component.

[0102] That is, when the first network component includes a plurality of first optical modules, and the second network component includes a plurality of second optical modules, the air duct switching component is switched to the first air duct, and the fan assembly dissipates heat for the plurality of first optical modules and the plurality of second optical modules. When the first network component includes a plurality of first optical modules, and the second network component includes a plurality of electrical modules, since the electrical modules do not generate heat when working, the air duct switching component is switched to the second air duct, and the fan assembly dissipates heat for the plurality of first optical modules, so that the air does not pass through the second air vent around the second optical module, reducing the resistance when the air flows, and reducing the power consumption of the fan.

[0103] That is, the air duct switching component switches between the first air duct and the second air duct, so that the fan assembly 400 can carry away the heat generated by the first network component, or in a "shared" manner, carry away the heat generated by the first network component and the second network component at the same time.

[0104] The following three examples are used for illustrative purposes, which are intended to illustrate possible implementations of the fan assembly 400, and do not constitute a limitation on the fan assembly 400.

[0105] In the first example, the air duct switching assembly includes a deflector plate, which is rotatably connected to the first mounting bracket. The deflector plate is rotated to a first position, the first air vent and the second air vent are communicated, forming the first air duct; the deflector plate is rotated to a second position, the first air vent and the third air vent are communicated, forming the second air duct. The deflector plate structure is simple, and the cost is low.

[0106] Optionally, the inside of the first mounting bracket is a cavity structure, the cavity structure is provided with a first slot, a second slot and a third air vent, the fan is fixedly installed in the first slot, and the deflector plate is rotatably installed in the second slot; wherein the deflector plate is rotated to a first position, the first slot and the second slot are communicated, the first air vent, the first slot, the second slot and the second air vent form the first air duct; the deflector plate is rotated to a second position, the first slot and the third air vent are communicated, the first air vent, the first slot and the third air vent form the second air duct.

[0107] The structure of the first example will be described below in conjunction with FIGS. 3a to 3c.

[0108] As shown in FIG. 3a, the fan assembly 400 includes an air duct switching assembly, which includes a mounting bracket 411 and a fan 412. The fan 412 is installed in the mounting bracket 411. The fan 412 is also referred to as a first fan, and the mounting bracket 411 is also referred to as a second mounting bracket.

[0109] As shown in FIG. 3b, the air duct switching assembly includes a deflector plate 413, which is rotatably connected to the mounting bracket 411. The first position to which the deflector plate 413 is rotated is shown in FIG. 3b. When the deflector plate 413 is rotated to the first position, under the driving of the fan 412, air enters the fan 412, a first slot at the installation position of the fan 412 and a second slot at the installation position of the deflector plate 413 in sequence. After passing through the second slot, the air passes through the second air vent around the second network component, thereby achieving heat dissipation for the second network component.

[0110] As shown in FIG. 3b, optionally, the fan assembly 400 further includes a plug-in power terminal 415. When the fan assembly 400 is plugged into the rear panel of the switch, the plug-in power terminal 415 is connected with the corresponding interface in the switch, thereby achieving power supply for the fan 412.

[0111] Optionally, the fan assembly 400 further includes a handle 416, which is used to realize the hand-holding position for plugging in and pulling out the fan assembly 412.

[0112] Optionally, the fan assembly 400 further includes an unlocking pedal 417, which is used to realize locking after plugging in the fan assembly 412, so as to fix the fan assembly 412; after the unlocking pedal 417 is pressed down, the locking of the fan assembly 412 can be unlocked, so as to pull out the fan assembly 412.

[0113] As shown in FIG. 3c, when the second network component does not need to be cooled, the air deflector 413 can be turned to the second position. When the air deflector 413 is turned to the second position, the air deflector 413 blocks the first slot and opens the passage from the first slot to the third slot. Thus, under the drive of the fan 412, the air enters the fan 412, the first slot at the installation position of the fan 412, and the third vent of the installation support 411 in sequence, and then is directly discharged to the outside without passing through the second vent around the second network component, thereby reducing the resistance when the air flows and improving the power consumption of the fan 412.

[0114] The working mode of the first example will be described below in combination with FIGS. 4a to 4c.

[0115] As shown in FIG. 4a, in the first example, the air deflector 413 is turned to the first position, the first slot and the second slot are communicated, and the first vent, the first slot, the second slot, and the second vent form a first air duct. Specifically, under the drive of the fan 412, the air flows through the first vent around the first network component, thereby cooling the first network component; the air flows through the fan 412 and the first slot; under the guiding effect of the air deflector 413, the air enters the second slot below; the air enters the second vent around the second network component and flows to the outside, thereby cooling the second network component.

[0116] As shown in FIG. 4b, in the first example, the air deflector 413 is turned to the second position, the first slot and the third vent are communicated, and the first vent, the first slot, and the third vent form a second air duct. Specifically, under the drive of the fan 412, the air flows through the first vent around the first network component, thereby cooling the first network component; the air flows through the fan 412 and the first slot; the air deflector 413 blocks the first slot and opens the passage from the first slot to the third vent, the air enters the third vent; and the air flows to the outside from the third vent.

[0117] It should be noted that, in order to form the first air duct or the second air duct and guide the air into the installation support 411, the space in the frame needs to be sealed to a certain extent. For example, as shown in FIG. 4a, at position A, the outer wall surface of the air baffle closely abuts against the outer wall surface of the installation support 411, which can ensure that the air flows through the fan 412 and the first slot, thereby forming the first air duct or the second air duct.

[0118] Optionally, the turning of the air deflector 413 to the first position or the second position can be achieved manually. For example, the fan assembly 400 is pulled out, the air deflector 413 is manually pushed to turn from the second position to the first position; or the air deflector 413 is manually pulled to turn from the first position to the second position. This implementation is simple and low in cost.

[0119] Optionally, as shown in FIG. 3b, the turning of the air deflector 413 to the first position or the second position can be achieved by the driving assembly 414 of the air deflector. The driving assembly 414 of the air deflector is exemplarily described below in combination with FIGS. 5a-5c.

[0120] As shown in FIG. 5a, the driving assembly 414 includes a spring 414-1, a rotating component 414-2, a rotating component 414-3, a pulley 414-4, a rope 414-5, and a handrail 414-6. The rotating component 414-2 and the rotating component 414-3 can be components including rotating shafts.

[0121] When the air deflector 413 turns from the second position to the first position, the handrail 414-6 is pulled; under the action of the rotating component 414-3 and the pulley 414-4, the rope 414-5 is tightened; the air deflector 413 turns around the rotating component 414-2 to the first position; the handrail 414-6 fixes the rope 414-5; and the spring 414-1 is in a stretched state.

[0122] When the air deflector 413 turns from the first position to the second position, the fixing of the rope 414-5 by the handrail 414-6 is released; under the action of the spring force, the spring 414-1 changes from the stretched state to a normal state and drives the air deflector 413 to turn around the rotating component 414-2 to the second position.

[0123] As shown in FIG. 5b, the driving assembly 414 includes a spring 414-1, a rotating component 414-2, a rotating component 414-3, a pulley 414-4, a rope 414-5, and a handrail 414-6. The rotating component 414-2 and the rotating component 414-3 can be components including rotating shafts.

[0124] When the air deflector 413 turns from the second position to the first position, the handrail 414-6 is pulled; under the action of the rotating component 414-3 and the pulley 414-4, the rope 414-5 is tightened; the air deflector 413 turns around the rotating component 414-2 to the first position; the handrail 414-6 fixes the rope 414-5; and the spring 414-1 is in a compressed state.

[0125] When the air deflector 413 rotates from the first position to the second position, the handrail 414-6 releases the fixing of the rope 414-5; under the action of the elastic force, the spring 414-1 changes from the compressed state to the normal state, and drives the air deflector 413 to rotate around the rotating part 414-2 to the second position.

[0126] As shown in FIG. 5c, the driving assembly 414 includes a planar four-bar structure 414-7 and a motor 414-8. When the air deflector 413 rotates from the second position to the first position, the motor 414-8 drives the driving rod to rotate clockwise, and the air deflector 413 rotates around the rotating part 414-2 to the first position. When the air deflector 413 rotates from the first position to the second position, the motor 414-8 drives the driving rod to rotate counterclockwise, and the air deflector 413 rotates around the rotating part 414-2 to the first position.

[0127] In the second example, the fan and the second mounting bracket are slidingly connected; when the fan slides to the third position, the first air vent and the second air vent are communicated, and the first air vent and the second air vent form the first air duct; when the fan slides to the fourth position, the first air vent and the third air vent are communicated, and the first air vent and the third air vent form the second air duct.

[0128] Optionally, the fan is provided in a plurality of forms, and at least one of the plurality of fans is slidingly connected with the second mounting bracket.

[0129] Optionally, the air duct switching assembly includes a sliding rail assembly, the sliding rail assembly is connected with the fan and the second mounting bracket respectively, and the sliding rail assembly is used to drive the fan to slide to the third position and the fourth position.

[0130] The structure of the second example will be described below in combination with FIGS. 6a and 6b.

[0131] As shown in FIG. 6a, the fan assembly 400 includes a fan 421 and a mounting bracket 424, and the fan 421 is slidingly connected with the mounting bracket 424. Optionally, the fan assembly 400 further includes a plurality of fans such as the fan 422, so that the air flow of the first air duct can be increased, the heat dissipation of the first network component can be ensured, and the heat dissipation of the first network component can be ensured in time without being affected by the heat dissipation of the second network component. The fan 421 is also referred to as a second fan, and the mounting bracket 424 is also referred to as a second mounting bracket.

[0132] As shown in FIG. 6b, the fan assembly 400 includes the fan 421 and a sliding rail assembly 423. The sliding rail assembly 423 can be realized through a screw nut, a gear and a rack, and the specific implementation of the sliding rail assembly 423 will not be described herein.

[0133] The working mode of the first example will be described below in combination with FIGS. 7a to 7e.

[0134] As shown in FIG. 7a, in the second example, the slide rail assembly 423 slides to the third position, the first air vent and the second air vent are communicated, and the first air vent and the second air vent form the first air duct. Specifically, as shown by the solid arrows in FIG. 7a, under the driving of the fan 421, the air flows through the first air vent around the first network component, thereby achieving heat dissipation of the first network component; the air flows through the fan 421; the air enters the second air vent around the second network component and flows to the outside, thereby achieving heat dissipation of the second network component.

[0135] Optionally, as shown by the dashed arrows in FIG. 7a, the fan assembly 400 further includes a fan 422, under the driving of the fan 422, the air flows through the first air vent around the first network component, thereby achieving heat dissipation of the first network component; the air flows through the fan 422; the air enters the third air vent and flows to the outside, thereby ensuring heat dissipation of the first network component.

[0136] As shown in FIG. 7b, in the second example, the slide rail assembly 423 slides to the fourth position, the first air vent and the third air vent are communicated, and the first air vent and the third air vent form the second air duct. Specifically, as shown by the solid arrows in FIG. 7b, under the driving of the fan 421, the air flows through the first air vent around the first network component, thereby achieving heat dissipation of the first network component; the air flows through the fan 421; the air enters the third air vent and flows to the outside. Wherein, the air flow resistance is small, and the fan power consumption is low.

[0137] It should be noted that the slide rail assembly 423 can be provided in the form of a screw nut, a gear rack, etc. After the fan assembly is pushed to the final position, the fan 422 is slid to the working position. It can also be a slanting slide rail assembly, which slides the fan 422 to the working position during the process of pushing the fan assembly to the final position.

[0138] The slanting slide rail assembly will be described below in conjunction with FIGS. 7c to 7e.

[0139] As shown in FIG. 7c, in the second example, a slanting slide rail 423 is further provided in the frame 100, and a sliding column 424 is further provided on the mounting plate of the fan 422.

[0140] As shown in FIG. 7d, during the process of pushing the fan assembly to the final position, the sliding column 424 enters the upper section of the slanting slide rail 423, and as the fan assembly is pushed inward, the sliding column 424 gradually enters the middle section and the lower section of the slanting slide rail 423.

[0141] As shown in FIG. 7e, when the fan assembly is pushed to the final position, the sliding column 424 gradually enters a certain position in the lower section of the slanting slide rail 423, so that the fan 422 enters the working position and can start working.

[0142] Optionally, as shown in FIG. 7e, the fan assembly further comprises a guide shaft 425 for guiding the fan 422 during the process of pushing the fan assembly to the final position, preventing the fan 422 from being turned over.

[0143] It should be noted that, as shown in FIGS. 7c-7e, the screw nut, gear rack and other methods need a motor and other driving devices, which are more complex and more expensive. The structure of the inclined slide rail 423 and the sliding column 424 can slide the fan 422 to the working position during the process of pushing the fan assembly to the final position, without the need for additional driving devices, which is simpler in structure and lower in cost.

[0144] In a third example, the fan and the mounting bracket are rotationally connected; wherein the fan is rotated to a fifth position, the first air vent and the second air vent are communicated, and the first air vent and the second air vent form a first air duct; the fan is rotated to a sixth position, the first air vent and the third air vent are communicated, and the first air vent and the third air vent form a second air duct.

[0145] Optionally, the fan is provided in a plurality, and at least one of the plurality of fans is rotationally connected with the mounting bracket.

[0146] Optionally, the air duct switching assembly comprises a connecting rod assembly, the connecting rod assembly is connected with the fan and the mounting bracket respectively, and the connecting rod assembly is used to drive the fan to rotate to the fifth position and the sixth position.

[0147] The structure of the third example will be described below in conjunction with FIGS. 8a and 8b.

[0148] As shown in FIG. 8a, the fan assembly 400 comprises a fan 431, a mounting plate 432, a connecting rod 433, a triangular plate 434, a handle 435, and a mounting bracket 437. The fan 421 is fixedly connected with the mounting plate 432; the mounting plate 432 is rotationally connected with the mounting bracket 437; the connecting rod 433 is rotationally connected with the mounting plate 432; the connecting rod 433 is rotationally connected with the triangular plate 434; and the handle 435 is rotationally connected with the triangular plate 434. The mounting plate 432, the connecting rod 433, the triangular plate 434, and the mounting bracket 437 form a parallelogram mechanism. The fan 431 is also referred to as a third fan, and the mounting bracket 437 is also referred to as a third mounting bracket.

[0149] Optionally, the fan assembly 400 further comprises a plurality of fans such as the fan 436, which can increase the air flow of the first air duct, ensure the heat dissipation of the first network component, and prevent the heat dissipation of the first network component from being not timely due to the simultaneous heat dissipation of the first network component and the second network component.

[0150] As shown in Fig. 8b, by pushing the handle 435, the triangular plate 434, based on the principle of the motion of the parallelogram mechanism, the mounting plate 432 and the fan 431 rotate from the sixth position as shown in Fig. 8a to the fifth position as shown in Fig. 8b.

[0151] Wherein, the handle 435 is a folding handle. When the handle 435 is working, the handle 435 can be rotated to the position as shown in Fig. 8a, facilitating operation; when the handle 435 is not working, the handle 435 can be rotated to the position as shown in Fig. 8b, reducing the occupied space of the handle 435.

[0152] The working mode of the third example is described below in conjunction with Figs. 9a to 9c.

[0153] As shown in Fig. 9a, in the third example, the fan 431 rotates to the fifth position, the first air vent and the second air vent are communicated, and the first air vent and the second air vent form a first air duct. Specifically, as shown by the solid arrows in Fig. 9a, under the drive of the fan 421, air flows through the first air vent around the first network component, thereby achieving heat dissipation of the first network component; the air flows through the fan 431; the air enters the second air vent around the second network component and flows to the outside, thereby achieving heat dissipation of the second network component.

[0154] Optionally, as shown by the dashed arrows in Fig. 9a, the fan assembly 400 further comprises a fan 436, under the drive of the fan 436, air flows through the first air vent around the first network component, thereby achieving heat dissipation of the first network component; the air flows through the fan 436; the air enters the third air vent and flows to the outside, thereby ensuring heat dissipation of the first network component.

[0155] As shown in Fig. 9b, in the third example, the fan 431 rotates to the sixth position, the first air vent and the third air vent are communicated, and the first air vent and the third air vent form a second air duct. Specifically, as shown by the solid arrows in Fig. 9b, under the drive of the fan 431, air flows through the first air vent around the first network component, thereby achieving heat dissipation of the first network component; the air flows through the fan 431; the air enters the third air vent and flows to the outside. Wherein, the air flow resistance is small, and the fan power consumption is low.

[0156] Optionally, the air is cooled through the second air duct as shown in Fig. 9b, and there are various implementation methods. For example, as shown in Fig. 9b, after the fan assembly 400 rotates from the fifth position to the sixth position, the fan 431 blows air in the up-down direction, in order to meet the use requirements, the fan 431 can be rotated by a certain angle, such as ninety degrees, to blow air in the left-right direction, thereby meeting the requirement of providing power to the second air duct; or, the fan 436 as shown in Fig. 9b is added to provide power to the air flow of the second air duct, thereby achieving heat dissipation of the first network component.

[0157] In one possible implementation, the network device includes a heat generating device and a wind shield, the wind shield can be provided on the heat generating device to prevent the heat generated by the heat generating device from being transmitted to the heat dissipation air ducts of the fan assembly, such as the first air duct and the second air duct described above.

[0158] In this implementation, the network device can include a plurality of heat generating devices, such as processors, processing circuits, etc., and a wind shield or the like structure can be provided on the outside of these heat generating devices. The wind shield is a plate made of heat insulation material, which can be bent or processed into any shape to match the shape of the heat generating device and be provided on the outside of the heat generating device. Through the wind shield, the heat generated by the heat generating device can be blocked from being transmitted to the first air duct and the second air duct, avoiding the adverse effects of the heat generated by the heat generating device on the heat dissipation of the first network component and the second network component.

[0159] For example, the heat generating device is a chip, and the device for cooling the chip is a cold plate. The cold plate is provided on the outside of the chip, and the cold plate also generates some heat, or after the cold plate dissipates heat, there is still some residual heat in the chip; the wind shield is provided on the outside of the cold plate, and the wind shield can block the heat generated by the chip from being transmitted to the first air duct and the second air duct through the cold plate.

[0160] As shown in FIG. 2d and FIG. 10a, the switch further includes a chip (not shown), a water inlet 610, a water inlet pipeline 620, a cold plate 630, a water outlet pipeline 640, and a water outlet 650. Specifically, the cooling liquid of the external cooling device enters the water inlet 610, the water inlet pipeline 620, the cold plate 630, the water outlet pipeline 640, and the water outlet 650 in sequence, and the liquid flowing out of the water outlet 650 enters the external cooling device. The cold plate 630 is provided on the outside of the chip and can carry away the heat generated by the chip.

[0161] Optionally, as shown in FIG. 10a, the network device includes a power supply assembly 500, which is plugged into the rear panel 120.

[0162] As shown in FIG. 10b, the wind shield 660 is provided on the outside of the cold plate 630, and the wind shield 660 is used to block the heat generated by the chip from being transmitted to the first air duct and the second air duct through the cold plate 630, avoiding the adverse effects on the heat dissipation of the first network component or the first network component and the second network component.

[0163] It should be noted that the chip is an example of a heat generating device, that is, the heat generating device can also be other devices, which can be blocked from transmitting heat to the first air duct and the second air duct by the heat insulation plate.

[0164] In the embodiments of the present application, the fan assembly and the power supply assembly are supported for online maintenance. The fan assembly is also referred to as a fan module, and the power supply assembly is also referred to as a power supply module. The special air duct (i.e., the air duct switching assembly) formed by the fan module can provide heat dissipation for the optical modules output from the front of the switch and for the optical modules output from the rear of the switch. When the interfaces of the rear panel 120 of the switch are electrical modules, the air duct switching assembly of the fan module supports the requirement of providing heat dissipation only for the optical modules of the front panel 110 in the electrical module scenario.

[0165] As shown in FIGS. 11a and 11b, the present application also provides a server. As shown in FIGS. 11a and 11b, the server is another example of the network device other than the switch. In this example, the frame 910 is provided with a front panel 911 and a rear panel 912; the first network component is a plurality of first hard disks 920, which are plugged into the front panel 911; and the second network component is a plurality of second hard disks 930, which are plugged into the rear panel 912. The air duct switching assembly in the fan assembly 400 is switched to the first air duct, and the fan assembly 400 provides heat dissipation for the plurality of first hard disks and the plurality of second hard disks. The fan assembly 400 is described above and will not be described here again.

[0166] That is, the network device in the embodiments of the present application is not limited to the switch, and the network device can also be a server. The first network component and the second network component are respectively hard disks, so that the purpose of plugging the hard disks into multiple panels is achieved, the number of hard disks in the server is increased, and the performance of the server in data storage, RAID (Redundant Arrays of Independent Disks), fault disk replacement, hard disk hot plugging, and the like is improved. The fan assembly 400 that is hot-plugged can also provide heat dissipation for the plurality of hard disks plugged into the multiple panels.

[0167] As shown in FIGS. 12a and 12b, on the basis of the fan assembly, the switch, and the server provided above, the present application also provides a cabinet 830 and a network device group (an example of a data center), which includes a plurality of network devices and the cabinet 830. The plurality of network devices are plugged into the cabinet 830. Taking the switch as an example of the network device, the cabinet 830 is modified. On the premise that the wiring space is reserved on the front panel of the cabinet 830, the wiring space is also designed on the rear panel of the cabinet 830, so that the wiring space is provided on the front and rear panels of the cabinet 830, and the requirement of the front and rear panels of the switch to output the wires when the front and rear panels of the switch are plugged into the external network devices is met.

[0168] As shown in FIG. 12a, several switches are plugged into the cabinet 830. The front panel 110 of each switch is plugged into the first port 210, and communicates with external devices through the first cable 810; the plurality of first cables 810 form a cable bundle, which is connected to external devices after wiring through the first wiring space of the cabinet 820. The first wiring space is, for example, the left and right wiring spaces shown in FIG. 12a.

[0169] As shown in FIG. 12b, several switches are plugged into the cabinet 830. The front panel 120 of each switch is plugged into the second port 310, and communicates with external devices through the second cable 820; the plurality of second cables 820 form a cable bundle, which is connected to external devices after wiring through the second wiring space of the cabinet 820. The second wiring space is, for example, the left and right wiring spaces shown in FIG. 12b.

[0170] As shown in FIG. 12c, in the embodiment of the present application, the switch is installed in the wiring route of the cabinet 830, and the left side is the cable bundle formed by the first cable 810 of the first port 210; the right side is the cable bundle formed by the second cable 820 of the second port 310. That is, on the basis of the wiring amount of the first port 210, the wiring amount of the second port 310 is increased, so that the wiring capacity of the entire cabinet 830 is improved by at least 50%.

[0171] For example, after the switch is installed in the cabinet 820, the cable is divided into two parts after coming out of the switch, which ensures that the single switch can be easily replaced after failure, and the wiring mode does not exist in the process of plugging and unplugging the switch. Then, the cable goes out of the cabinet 820 along the side of the cabinet 820, and due to the limited space on the side of the cabinet 820, for example, the total cable-out capacity of the cabinet is limited to about 50mm on a single side of a standard 19-inch cabinet. In the embodiment of the present application, the cable can be wired out to the final device from the front first wiring space and the rear second wiring space, that is, the high-speed cable can be wired out from the front and rear of the switch, which solves the problem that the box-type switch can only wire out from one side, and the total wiring capacity of the switch is limited, and solves the problem that the switch can only be wired from one side of the cabinet after being installed in the cabinet, and the wiring capacity is limited.

[0172] The types, numbers, shapes, installation methods, structures, etc. of the components of the technical solutions provided in the embodiments of the present application are not limited to the above-described embodiments, and any technical solutions implemented under the principles of the present application are within the protection scope of the present application. Any one or more embodiments or drawings in the specification are combined in a suitable manner, and the technical solutions are within the protection scope of the present application.

[0173] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application. Those skilled in the art should understand that, although the present application has been described in detail with reference to the foregoing embodiments, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent replacements can be made to some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

1. A network device, comprising: The network device comprises: a front panel provided with a plurality of first network components; a rear panel provided with a plurality of second network components; a fan assembly arranged on the rear panel, the fan assembly comprising a duct switching assembly provided with a first working mode and a second working mode; wherein, when the duct switching assembly is switched to the first working mode, air flows through the outer wall surfaces of the first network components and the second network components under the driving of the fan assembly; and when the duct switching assembly is switched to the second working mode, air flows through the outer wall surfaces of the first network components under the driving of the fan assembly.

2. The network device of claim 1, wherein, The network device is a switch, the first network components are first optical modules, and the second network components are second optical modules; a plurality of first air vents are formed in the periphery of the first network components on the front panel; and second air vents are arranged on the periphery of the second network components on the rear panel; wherein, when the duct switching assembly is switched to the first working mode, the first air vents and the second air vents are communicated to form a first duct; and air in the first duct flows through the outer wall surfaces of the first optical modules and the second optical modules under the driving of the fan assembly.

3. The network device of claim 1, wherein, The network device is a switch, the first network components are first optical modules, and the second network components are electrical modules; a plurality of first air vents are formed in the periphery of the first network components on the front panel; and the fan assembly is provided with third air vents which are communicated with the outside; wherein, when the duct switching assembly is switched to the second working mode, the first air vents and the third air vents are communicated to form a second duct; and air in the second duct flows through the outer wall surfaces of the first optical modules and carries away the heat generated by the first optical modules under the driving of the fan assembly.

4. The network device according to any of claims 1-3, characterized by The fan assembly further comprises a first mounting bracket, and the duct switching assembly comprises a deflector plate which is rotatably connected to the first mounting bracket; wherein, when the deflector plate is rotated to a first position, the duct switching assembly is switched to the first working mode; and when the deflector plate is rotated to a second position, the duct switching assembly is switched to the second working mode. The fan assembly further comprises a first fan, the inside of the first mounting bracket is a cavity structure, the cavity structure is provided with a first slot, a second slot and third air vents, the first fan is fixedly installed in the first slot, and the deflector plate is rotatably installed in the second slot; a plurality of first air vents are formed in the periphery of the first network components on the front panel; and second air vents are arranged on the periphery of the second network components on the rear panel; 5. The network device of claim 4, wherein, wherein, when the deflector plate is rotated to the first position, the first slot and the second slot are communicated, the first air vents, the first slot, the second slot and the second air vents form a first duct, and the duct switching assembly is switched to the first working mode; and when the deflector plate is rotated to the second position, the first slot and the second slot are communicated, the first air vents, the first slot, the second slot and the second air vents form a second duct, and the duct switching assembly is switched to the second working mode. ​ The air deflector rotates to the second position, the first slot and the third vent are communicated, the first vent, the first slot and the third vent form a second air duct, and the air duct switching assembly switches to the second working mode.

6. The network device according to any one of claims 1-3, wherein, The fan assembly comprises a second fan and a second mounting bracket, the second fan is connected to the air duct switching assembly, and the air duct switching assembly and the second mounting bracket are slidingly connected. The second fan slides to a third position, and the air duct switching assembly switches to the first working mode. The second fan slides to a fourth position, and the air duct switching assembly switches to the second working mode.

7. The fan assembly of claim 6, wherein, The air duct switching assembly comprises a sliding rail assembly, the sliding rail assembly is connected to the second fan and the second mounting bracket respectively, and the sliding rail assembly drives the second fan to slide to the third position and the fourth position.

8. The network device of any of claims 1-3, wherein, The fan assembly comprises a third fan and a third mounting bracket, the third fan is connected to the air duct switching assembly, and the air duct switching assembly and the third mounting bracket are rotatably connected. The third fan rotates to a fifth position, and the air duct switching assembly switches to the first working mode. The third fan rotates to a sixth position, and the air duct switching assembly switches to the second working mode.

9. The network device of claim 8, wherein, The air duct switching assembly comprises a connecting rod assembly, the third fan is mounted on the connecting rod assembly, the connecting rod assembly is rotatably connected to the third mounting bracket, and the connecting rod assembly drives the fan to rotate to the fifth position and the sixth position.

10. The network device of any of claims 1-9, wherein, The network device comprises a heat generating device and a wind shield, the wind shield covers the heat generating device to prevent heat generated by the heat generating device from being transmitted to a heat dissipation air duct of the fan assembly.

11. The network device of claim 10, wherein, The network device further comprises a liquid cooling water inlet, a cold plate and a liquid cooling water outlet, the cold plate is in communication with the liquid cooling water inlet and the liquid cooling water outlet respectively, the cold plate is arranged around the heat generating device, and the wind shield covers the cold plate; wherein cooling medium flows into the liquid cooling water inlet, flows through the cold plate, and flows out of the liquid cooling water outlet.

12. A cabinet, characterized by A cabinet is used for mounting a plurality of network devices as claimed in any one of claims 1-11, the cabinet comprises a first wiring space arranged on a front panel and a second wiring space arranged on a rear panel. The first wiring space is used for accommodating a plurality of first cables connected to the first network components on the front panel, and the second wiring space is used for accommodating a plurality of second cables connected to the second network components on the rear panel.

13. A data center, characterized by, The cabinet comprises a plurality of network devices as claimed in any one of claims 1-11.

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