Optical module and optical communication device

Abstract

An optical module (10) and an optical communication device (100). The optical module (10) comprises a housing (130), a printed circuit board assembly (120), and an optical port connector (110). The optical module housing (130) comprises a hollow cavity (130a) capable of accommodating a liquid cooling working medium and, leading to the hollow cavity (130a), an input port (130b) and an output port (130c), wherein the input port (130b) and the output port (130c) are located at the front part of the housing (130), both arranged towards the rear end side of the optical module (10), and respectively used for adaptively connecting to liquid path ports on a device main body (20) side, so as to establish a liquid cooling working medium loop. The optical module (10) can implement an electrical connection to the device main body (20) and an connection of the liquid cooling working medium loop by means of a single plugging operation, exhibits good operability, and can avoid possible adverse effects of liquid leakage on an electrical connection link to ensure the reliability of device operation.

Description

Optical module and optical communication device

[0001] The present application claims priority to the Chinese patent application No. 202411376671.8, filed on September 29, 2024, and entitled "Optical module and optical communication device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of optical communication, and in particular to an optical module and an optical communication device. BACKGROUND

[0003] With the development of optical communication technology and the increase of device capacity, the power density of optical modules is becoming higher and higher. Traditional air cooling cannot meet the heat dissipation requirements of higher power optical modules, and immersion liquid cooling technology can provide good heat dissipation capacity, but the air tightness problem of optical coupling path has not been solved. Therefore, the development of optical module power is bottlenecked. SUMMARY

[0004] Embodiments of the present application provide an optical module and an optical communication device, which effectively improve the heat dissipation capacity while having good operability and running reliability through the structural configuration optimization of the optical module.

[0005] In a first aspect, an optical module is provided, which is used for plugging and adapting with a device main body. The optical module comprises a shell, a printed circuit board assembly (PCBA) and an optical port connector. The optical port connector is located at the front end of the shell and is connected with the printed circuit board assembly. At least the part of the printed circuit board assembly provided with a heating device is located in the shell, and the rear end of the printed circuit board assembly forms an electrical interface. The shell of the optical module comprises a hollow cavity capable of accommodating a liquid cooling working medium, and an input port and an output port communicating with the hollow cavity. The input port and the output port are located at the front part of the shell, and are both arranged towards the rear end side of the optical module and are respectively used for adapting and connecting with the liquid path interface of the device main body side to establish the circulation of the liquid cooling working medium.

[0006] After the optical module is inserted into the optical cage, the electrical interface on the PCBA is connected with the electrical port connector on the side of the device main body to realize electrical signal communication. Meanwhile, the input port and the output port on the optical module can be respectively connected with the liquid path interface on the side of the device main body to form a liquid cooling working medium circulation. The low-temperature liquid cooling working medium can enter the hollow cavity of the shell of the optical module through the input port, exchange heat with the shell wall, and then the high-temperature liquid cooling working medium flows out of the shell of the optical module through the output port. In this way, based on the liquid cooling working medium circulation, the heat generated by the internal devices of the shell can be quickly taken away, and the heat dissipation capacity of the optical module is effectively improved. By using the optical module provided in the embodiments of the present application, one-time plug-in operation can realize electrical connection between the optical module and the device main body, and complete the connection of the liquid cooling working medium circulation, and has good operability. Moreover, the operation and maintenance of the optical module can be conveniently performed, and the overall operation cost is relatively low.

[0007] In addition, the input port and the output port are located on the front end side of the shell, and the input port and the output port on the side of the optical module are away from the electrical interface at the connection position with the liquid path interface on the side of the device main body. If abnormal liquid leakage occurs at the connection position, the adverse effects of the liquid leakage on the electrical connection link can be avoided, and the reliability of the device operation is ensured.

[0008] In addition, for the optical communication device, the number of optical signal transmissions per panel is an important indicator of communication capacity, that is, a higher fiber port density needs to be obtained in the same space to realize more connections in a limited space and meet the trend of gradually increasing network rate. The configuration of the connection interface on the side of the optical module provided in the embodiments of the present application does not occupy the space on the rear end side of the optical module. While establishing the liquid cooling working medium circulation, the air cooling heat dissipation flow section between the optical module and the optical cage can be ensured, and the air cooling heat dissipation effect is also achieved, which has good adaptability. Compared with the implementation scheme in which the liquid cooling connector of the optical module and the device main body is located on the rear end side of the optical module, when the device main body needs to be configured with optical modules of the same arrangement density, the present embodiment does not need to increase the flow section between the optical module and the optical cage, and the occupation of the device space can be reasonably controlled, and good air cooling compatibility is achieved.

[0009] Based on the first aspect, the embodiments of the present application also provide a first implementation manner of the first aspect: the input port and the output port of the optical module are respectively provided with first connectors, and the connection interface of the first connector is arranged on the rear end side of the optical module and is used for adaptively connecting with the second connector on the side of the device main body. The first connector corresponding to the input port is an input connector, and the first connector corresponding to the output port is an output connector. Correspondingly, the liquid outlet connector adaptively connected with the input connector on the side of the device main body, and the liquid return connector adaptively connected with the output connector. In this way, the connection and adaptation of the liquid cooling circuit can be quickly realized.

[0010] Based on the first implementation of the first aspect, the second implementation of the first aspect is provided in the embodiments of the present application: the front end side of the shell has an outward protruding part, the input port and the output port are arranged on the outward protruding part, and the first connector is located outside the outward protruding part, or the first connector is located in the input port and the output port on the outward protruding part respectively. Based on the arrangement of the outward protruding part on the front end side of the optical module, the first connector can be arranged outside the device, and the overall structure is more compact and reasonable.

[0011] Based on the first implementation of the first aspect or the second implementation of the first aspect, the third implementation of the first aspect is provided in the embodiments of the present application: the first connector is a self-sealing quick connector in a normal state. Illustratively, the first connector can include a sealing member, a connector shell, an elastic reset member and a limiting member, the sealing member and the elastic reset member are located in the connector shell, and the butt joint interface end of the connector shell has a sealing stop part; wherein the sealing member can be sealed against the sealing stop part, and the sealing member has a press-fit end extending out of the connector shell; the limiting member is arranged at the fixed end of the connector shell, the limiting member is fixedly connected with the shell, and the middle part of the limiting member has a through hole to communicate with the corresponding input port and output port; the elastic reset member is pre-compressed between the sealing member and the limiting member. In actual application, the first connector and the second connector on the device main body side can adopt the same structure of the quick connector, the optical module is inserted into the optical cage of the device main body, the press-fit end of the sealing member of the first connector and the second connector is pressed against and pushes the elastic reset member to deform; after the end faces of the two connector shells abut against each other, the sealing member is separated from the corresponding sealing stop part, and the connector shells of the two connectors are communicated. After the optical module is pulled out from the device main body side, the first connector and the second connector are separated synchronously, and the sealing member can be quickly reset under the action of the elastic reset member, so as to realize the normal sealing of the quick connector.

[0012] Illustratively, the sealing member can be a spherical sealing member, or the elastic reset member can be a compression spring.

[0013] Other illustratively, the limiting member arranged at the fixed end of the connector shell can be independently processed and then assembled and fixed, or can be integrally processed and formed.

[0014] Based on the third implementation of the first aspect, the fourth implementation of the first aspect is provided in the embodiments of the present application: the first connector further includes a sealing ring arranged on the end face of the butt joint interface end of the connector shell, for abutting and sealing with the second connector on the device main body side. In this way, when the first connector and the second connector are abutted and adapted, a reliable seal can be formed between them through the sealing ring, so as to ensure that the liquid cooling medium does not leak.

[0015] Based on the first aspect, or the first implementation of the first aspect, the embodiments of the present application further provide a fifth implementation of the first aspect: the hollow cavity is provided with a sealing element, an elastic reset element and a limiting element, the limiting element is fixedly arranged in the hollow cavity, the sealing element is capable of sealing against the hollow cavity wall connected to the input port, and the elastic reset element is pre-compressed between the sealing element and the limiting element. After the optical module is inserted into the optical cage, based on the pressure difference between the input port and the output port, the liquid cooling medium pushes the sealing element away from the input port side and flows into the housing interior, and simultaneously deforms the elastic reset element. After the optical module is pulled out from the device main body side, the sealing element can be quickly reset under the action of the elastic reset element, blocks the flow path of the input port, and realizes normal sealing. In this way, the hollow cavity is in a pressure balance state, and the liquid cooling medium in the hollow cavity can remain in a non-flowing state, and the optical module in the uninstalled state will not leak.

[0016] Based on the first aspect, or the first implementation of the first aspect, the embodiments of the present application further provide a sixth implementation of the first aspect: the hollow cavity is provided with an elastic sealing element and a limiting element, the limiting element is fixedly arranged in the hollow cavity, the elastic sealing element is capable of sealing against the hollow cavity wall connected to the input port, and is pre-compressed between the inner wall of the hollow cavity and the limiting element. After the optical module is inserted into the optical cage, based on the pressure difference between the input port and the output port, the liquid cooling medium pushes the elastic sealing element away from the input port side and flows into the housing interior; under the positioning action of the limiting element, the elastic sealing element is simultaneously deformed under pressure. After the optical module is pulled out from the device main body side, the elastic sealing element can quickly recover the deformation, block the flow path of the input port, and realize normal sealing. The hollow cavity is also in a pressure balance state, and the liquid cooling medium in the hollow cavity can remain in a non-flowing state, and the optical module in the uninstalled state will not leak.

[0017] Based on the first aspect, or the first implementation of the first aspect, or the second implementation of the first aspect, or the third implementation of the first aspect, or the fourth implementation of the first aspect, or the fifth implementation of the first aspect, or the sixth implementation of the first aspect, the embodiments of the present application further provide a seventh implementation of the first aspect: the hollow cavity is arranged in the body of the housing in a "U" shape, and the two side extension ends of the "U" shaped hollow cavity are respectively connected to the input port and the output port, wherein the side of the hollow cavity connected to the input port is an inflow cavity, and the other side connected to the output port is an outflow cavity, and the inflow cavity is connected to the outflow cavity through a communication cavity at a bending portion. In this way, the hollow cavity can be arranged in the body space of the housing to improve the heat exchange efficiency.

[0018] In other possible implementation schemes, the hollow cavity in the housing can adopt other forms, for example but not limited to, being arranged in the housing in a meandering and bending shape along the flow direction of the liquid medium.

[0019] Based on the seventh implementation manner of the first aspect, the eighth implementation manner of the first aspect is provided by the embodiments of the present application: the width of the inflow cavity is less than the width of the outflow cavity. In this way, by increasing the flow section of the outflow cavity, the liquid cooling medium in the inflow cavity is heated and cooled by the heat exchange, and the outflow cavity has substantially equivalent heat exchange capacity in the corresponding bonded area.

[0020] Based on the seventh implementation manner of the first aspect or the eighth implementation manner of the first aspect, the ninth implementation manner of the first aspect is provided by the embodiments of the present application: at least two flow distribution fins are arranged in the inflow cavity and the outflow cavity, and the flow distribution fins are arranged along the extension direction of the flow path to separate the corresponding inflow cavity and outflow cavity to form a sub-flow path; upstream of the adjacent two flow distribution fins in the inflow cavity and downstream of the adjacent two flow distribution fins in the outflow cavity are respectively provided with a turbulence fin, and the turbulence fin is arranged opposite to the sub-flow path between the corresponding adjacent two flow distribution fins in the extension direction of the flow path. In the flow direction of the liquid medium, the flow velocity of the medium at the position area close to the cavity wall on both sides of the flow path can be ensured, the shell uniform temperature capacity in the bonded heat exchange area can be effectively improved, and the overall heat dissipation capacity of the optical module can be improved. It has the characteristics of simple structure and low implementation cost; at the same time, based on the arrangement of the turbulence fin, it has good flow stabilizing effect, which can further improve the uniform temperature capacity.

[0021] In actual application, at least two flow distribution fins are arranged in the inflow cavity and the outflow cavity, and the flow distribution fins are arranged along the extension direction of the flow path to separate the corresponding inflow cavity and outflow cavity to form a sub-flow path; downstream of the adjacent two flow distribution fins in the inflow cavity and upstream of the adjacent two flow distribution fins in the outflow cavity are respectively provided with a turbulence fin, and the turbulence fin is arranged opposite to the sub-flow path between the corresponding adjacent two flow distribution fins in the extension direction of the flow path.

[0022] Based on the ninth implementation manner of the first aspect, the tenth implementation manner of the first aspect is provided by the embodiments of the present application: the number of flow distribution fins in the inflow cavity is the same as that in the outflow cavity, and the flow distribution fins in the inflow cavity and the flow distribution fins in the outflow cavity are one-to-one corresponding and connected by arc-shaped connecting fins. In this way, a plurality of continuous sub-flow paths arranged at intervals are formed in the hollow cavity, avoiding crosstalk at the communication cavity, and each sub-flow path separates the hollow cavity to form an independent flow channel with good flow stabilizing effect.

[0023] Based on the first aspect, or the first implementation of the first aspect, or the second implementation of the first aspect, or the third implementation of the first aspect, or the fourth implementation of the first aspect, or the fifth implementation of the first aspect, or the sixth implementation of the first aspect, or the seventh implementation of the first aspect, or the eighth implementation of the first aspect, or the ninth implementation of the first aspect, or the tenth implementation of the first aspect, the eleventh implementation of the first aspect is provided in the embodiments of the present application: the shell comprises a first shell and a second shell connected to each other, the hollow cavity comprises a first hollow cavity arranged in the first shell and a second hollow cavity arranged in the second shell, and the first hollow cavity and the second hollow cavity are in communication. In this way, the shell capable of accommodating the PCBA is enclosed by assembling the first shell and the second shell, and the heat generated by the heat generating device on the PCBA can be exchanged to the liquid cooling working medium in the first hollow cavity, and the heat on the other side of the PCBA is exchanged to the liquid cooling working medium in the second hollow cavity. Overall, the heat dissipation capacity of the optical module can be effectively improved.

[0024] In actual applications, the input port and the output port can be arranged on the first shell and in communication with the first hollow cavity, respectively.

[0025] Exemplarily, the arrangement forms of the first hollow cavity and the second hollow cavity can be the same or different.

[0026] Based on the eleventh implementation of the first aspect, the twelfth implementation of the first aspect is provided in the embodiments of the present application: the second shell further comprises an input port and an output port in communication with the second hollow cavity, respectively, the input port on the second shell side is in communication with the inflow flow path on the first shell side, and the output port on the second shell side is in communication with the outflow flow path on the first shell side. In this way, the low-temperature liquid cooling working medium can enter the second shell synchronously, so as to ensure that the second shell has good heat exchange efficiency, and meanwhile, the high-temperature liquid cooling working medium completing heat exchange on the second shell side is output through the output port and the output port, so as to avoid affecting the heat exchange efficiency on the first shell side.

[0027] In actual applications, the input port on the second shell side and the inflow flow path on the first shell side, and the output port on the second shell side and the outflow flow path on the first shell side can be in communication through quick connectors, respectively. In other actual applications, the corresponding liquid path communication can also be realized through the structures of the first shell and the second shell.

[0028] The second aspect of the embodiment of the present application provides an optical communication device, which comprises a device main body and an optical module. The optical module is the optical module as described above. The device main body comprises a shell, a single board and an optical cage. The optical cage is connected with the single board, and the insertion port of the optical cage is exposed to the shell. The single board is provided with an electrical port connector, and the shell is provided with a liquid path interface. The optical module is pluggable connected with the optical cage, so that the electrical interface of the optical module is adaptively connected with the electrical port connector, and the input port and the output port of the optical module are adaptively connected with the liquid path interface of the shell. Based on the optical module with good heat dissipation capability, one plugging operation can realize the electrical connection between the optical module and the device main body, and complete the butt joint of the liquid cooling working medium circulation. It has good operability. At the same time, the input port and the output port on the side of the optical module are away from the electrical interface in the butt joint position with the liquid path interface on the side of the device main body, which can avoid the adverse effects of liquid leakage on the electrical connection link, and has good operation reliability. In addition, while establishing the liquid cooling working medium circulation, the air cooling heat dissipation effect can be achieved, and it has good adaptability.

[0029] For example, the optical communication device can be a server computer, a router or a switch, etc. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a structural schematic diagram of an optical communication device provided by the embodiment of the present application;

[0031] Fig. 2 is a schematic diagram of the insertion relationship of the optical module shown in Fig. 1;

[0032] Fig. 3 is a schematic diagram of an optical module provided by the embodiment of the present application;

[0033] Fig. 4 is an assembly explosion schematic diagram of the optical module shown in Fig. 3;

[0034] Fig. 5 is an assembly explosion schematic diagram of a device main body provided by the embodiment of the present application;

[0035] Fig. 6 is a structural schematic diagram of a hollow cavity provided by the embodiment of the present application;

[0036] Fig. 7 is a view of A of Fig. 6;

[0037] Fig. 8 is a structural schematic diagram of a first joint and a second joint adapted to each other provided by the embodiment of the present application;

[0038] Fig. 9 is a schematic diagram of the butt joint and adaptation state of the first joint and the second joint shown in Fig. 8;

[0039] Fig. 10 is a structural schematic diagram of another hollow cavity provided by the embodiment of the present application;

[0040] Fig. 11 is a structural schematic diagram of still another hollow cavity provided by the embodiment of the present application;

[0041] FIG. 12 is a structural schematic diagram of another hollow cavity provided by an embodiment of the present application;

[0042] FIG. 13 is a schematic diagram of another optical module provided by an embodiment of the present application;

[0043] FIG. 14 is a structural schematic diagram of another hollow cavity provided by an embodiment of the present application;

[0044] FIG. 15 is a structural schematic diagram of another hollow cavity provided by an embodiment of the present application;

[0045] FIG. 16 is a schematic diagram of another optical module provided by an embodiment of the present application. DETAILED DESCRIPTION

[0046] Embodiments of the present application provide a liquid-cooled optical module implementation scheme, which can effectively improve the heat dissipation capacity of the optical module while ensuring good use reliability.

[0047] In a communication link, a cable can be connected to an optical module assembled on the side of a communication device through a connector arranged at the end of the cable. The optical module is an important component in the field of optical communication, which includes an electrical interface and an optical interface. The electrical interface is used to be connected with an electrical port connector arranged on a single board (circuit board) in the communication device, and the optical interface (optical fiber interface) is used to be connected with an optical fiber ferrule. In different application scenarios, the optical module can convert an electrical signal input by the electrical interface into an optical signal output by the optical interface, or convert an optical signal input by the optical interface into an electrical signal output by the electrical interface, or convert an electrical signal input by the electrical interface into an optical signal output by the optical interface, and at the same time, convert an optical signal input by the optical interface into an electrical signal output by the electrical interface.

[0048] Please refer to FIG. 1, which is a structural schematic diagram of an optical communication device 100 provided by an embodiment of the present application. The optical communication device 100 includes a device main body 20 and an optical module 10. The optical module 10 is inserted and assembled in an optical cage 210 on the side of the device main body 20, so as to realize the connection between the electrical interface of the optical module 10 and the single board of the device main body 20. A cable (not shown in the figure) can be inserted and assembled in an optical port connector 110 of the optical module 10 through a connector at the end of the cable, so as to realize the connection between an optical fiber ferrule and the optical interface of the optical module 10. In the figure, one optical module 10 is taken as an example to illustrate the relative position relationship between the optical module 10 and the device main body 20, so as to simplify the illustration. Please refer to FIG. 2 as well, which is an insertion and assembly relationship schematic diagram of the optical module 10 shown in FIG. 1. For the convenience of description, the insertion and plugging direction of the optical module 10 is indicated by an arrow X in the figure.

[0049] In actual scenarios, the demand for high-bandwidth high-rate data transmission is gradually increasing, and it is necessary to provide good heat dissipation capability for optical modules to ensure the stable operation of optical module devices. Traditional air cooling heat dissipation has been unable to meet the heat dissipation requirements of higher-power optical modules, and immersion liquid cooling technology can provide good heat dissipation capability, but the air tightness problem of the optical coupling path has not been solved.

[0050] Based on this, the embodiment of the application provides an optical module capable of plugging a liquid cooling loop, which is used for plugging and adapting on the device main body side. The optical module comprises a shell, a printed circuit board assembly and an optical port connector. The optical port connector is located at the front end of the shell and is connected with the printed circuit board assembly. At least the part of the printed circuit board assembly provided with a heating device is located in the shell, and the rear end of the printed circuit board assembly forms an electrical interface. The shell of the optical module comprises a hollow cavity capable of accommodating a liquid cooling working medium, and an input port and an output port communicating with the hollow cavity. The input port and the output port are located at the front of the shell, and are both arranged towards the rear end of the optical module, and are respectively used for adaptively connecting with the liquid path interface on the device main body side to establish a liquid cooling working medium circulation.

[0051] In this way, after the optical module is inserted into the optical cage, the electrical interface on the PCBA is connected with the electrical port connector on the device main body side to realize electrical signal communication. At the same time, the input port and the output port on the optical module are respectively connected with the liquid path interface on the device main body side to form a liquid cooling working medium circulation. The low-temperature liquid cooling working medium can enter the hollow cavity of the shell of the optical module through the input port, and after heat exchange with the wall surface of the shell, the high-temperature liquid cooling working medium flows out of the shell of the optical module through the output port. In this way, based on the liquid cooling working medium circulation, the heat generated by the devices inside the shell can be quickly taken away, and the heat dissipation capability of the optical module is effectively improved. By applying the optical module provided by the embodiment of the application, one plugging operation can realize the electrical connection of the optical module with the device main body and complete the docking of the liquid cooling working medium circulation. It has good operability, and is convenient for performing operation and maintenance of the optical module, and the overall operation cost is relatively low.

[0052] In addition, the input port and the output port are located at the front end of the shell, and the input port and the output port on the optical module side are away from the docking position of the liquid path interface on the device main body side. If abnormal liquid leakage occurs at the docking position, the adverse effects of the liquid leakage on the electrical connection link can be avoided, and the reliability of the device operation is ensured.

[0053] In addition, for optical communication equipment, the number of optical signal transmissions per panel is an important indicator of communication capacity, that is, higher fiber port density is needed in the same space to achieve more connections in a limited space to meet the trend of gradually increasing network speed. The configuration of the optical module side interface of the liquid cooling optical module provided by the embodiment of the application does not occupy the space on the rear end side of the optical module. While establishing a liquid cooling working medium circulation, it can ensure the air cooling heat dissipation flow cross section between the optical module and the optical cage, and at the same time has the air cooling heat dissipation effect, and has good adaptability. Compared with the implementation scheme that the liquid cooling connector of the optical module and the equipment main body is located on the rear end side of the optical module, when the equipment main body needs to configure optical modules with the same arrangement density, the implementation scheme does not need to increase the flow cross section between the optical module and the optical cage, can reasonably control the occupation of the equipment space, and has good air cooling compatibility.

[0054] In order to better understand the technical solutions and technical effects of the present application, without losing generality, specific embodiments will be described in detail below. Please refer to FIGS. 3, 4 and 5, wherein FIG. 3 is a schematic diagram of an optical module provided by an embodiment of the present application, FIG. 4 is an assembly explosion schematic diagram of the optical module shown in FIG. 3, and FIG. 5 is an assembly explosion schematic diagram of an equipment main body provided by an embodiment of the present application.

[0055] The optical module 10 includes a housing 130, a printed circuit board assembly (PCBA) 120, an optical port connector 110, and an unlocking assembly 150.

[0056] As shown in FIGS. 3 and 4, the optical port connector 110 and the PCBA 120 are located in the housing 130. In the present embodiment, the PCBA 120 includes a circuit board 121 and a heat generating device 122 disposed on the circuit board 121. Here, the heat generating device 122 refers to a device that generates heat during the operation of the optical module, such as but not limited to, an optical chip, a laser, or a power module, etc. The optical port connector 110 is connected to one end of the circuit board 121, forming an optical interface for connecting with a cable connector. The other end of the circuit board 121 has an electrical interface that can be plugged and adapted with the electrical port connector 230 on the single board 220 of the equipment main body 20. For convenience of description, the side where the optical interface of the optical module 10 is located is defined as the front end side, and the side where the electrical interface is located is defined as the rear end side.

[0057] In combination with FIG. 5, the single board 220 of the device body 20 is arranged in the shell 240, the electrical port connector 230 and the optical cage 210 are mounted on the single board 220, the insertion port of the optical cage 210 is exposed to the shell 240, and the electrical interface at the end of the circuit board 121 is interconnected with the electrical port connector 230 after the optical module 10 is inserted in place. In a specific implementation, the electrical interface can be a gold finger structure (not shown in the figure) on the circuit board 121, and can be specifically determined according to overall design requirements of the product. The embodiments of the present application are not limited.

[0058] In the present embodiment, the shell 130 includes a first shell 131 and a second shell 132 connected to each other, and the two are butted to enclose the shell 130 that can accommodate internal devices. Please refer to FIGS. 3, 4 and 6, wherein FIG. 6 is a structural schematic diagram of a hollow cavity provided by an embodiment of the present application. As shown in FIG. 6, the side plate surface of the circuit board 121 where the heat generating device 122 is arranged is arranged opposite to the first shell 131, and the other side plate surface of the circuit board 121 is arranged opposite to the second shell 132. As shown in FIG. 6, the hollow cavity can be a first hollow cavity 130a arranged in the first shell 131, and the input port 130b and the output port 130c in communication with the first hollow cavity 130a, the input port 130b and the output port 130c are located at the front end side of the shell 130. The heat generated by the heat generating device 122 is transferred to the first shell 131 opposite to the heat generating device 122, and is exchanged to the liquid cooling working medium in the first hollow cavity 130a.

[0059] As shown in FIG. 6, the low-temperature liquid cooling working medium can enter the first hollow cavity 130a of the shell of the optical module 10 through the input port 130b, and the high-temperature liquid cooling working medium flows out of the shell of the optical module through the output port after heat exchange with the shell wall surface.

[0060] In a specific implementation, each second connector 250 can partially extend out of the shell 240 of the device body 20, or can be completely built-in in the shell 240, that is, the first connector 140 on the side of the optical module 10 is inserted into the shell 240 from the corresponding opening 241 of the shell 240, and is adaptively connected with the corresponding second connector 250.

[0061] Corresponding to the unlocking assembly 150, the mounting groove 1321 is arranged on the two opposite sides of the shell 130. As shown in FIGS. 3 and 4, the mounting groove 1321 is arranged on the second shell 132, the unlocking assembly 150 includes the elastic sheet 151, the pull ring 152 and the spring 153, the elastic sheet 151 is arranged with the clamping hooks 5111 on the two sides, and the elastic sheet 151 is fixed with the pull ring 152. The spring 153 is placed in the mounting groove 1321, and the spring 153 is limited in the mounting groove 1321 of the shell 130 by the clamping hooks 5111 on the elastic sheet 151. After the optical module 10 is inserted into the optical cage, the inner extension end of the elastic sheet 151 can be clamped and limited with the side wall of the optical cage. When the pull ring 152 is pulled in the pulling-out direction, the pull ring 152 drives the elastic sheet 151 to move synchronously, and in the process, the spring 153 is compressed under the action of the clamping hooks 5111. When the inner extension end of the elastic sheet 151 is disengaged from the clamping and limiting, the pull ring 152 is released, the spring 153 releases the elastic deformation energy and rebounds, and can push the elastic sheet 151 to return to the original position.

[0062] It can be understood that the unlocking assembly 150 is not limited to the structure shown in the figure, and in other specific implementations, the unlocking mechanism can also be determined according to the matching scheme of the optical module and the optical cage. The embodiments of the present application are not limited.

[0063] For the liquid cooling path in the shell 130, different configuration structures can be used to reasonably control the flow group to improve the heat exchange efficiency.

[0064] In the present embodiment, the front end side of the shell 130 has an outer convex part 1311, and the input port 130b and the output port 130c are arranged on the outer convex part 1311. As shown in FIG. 1, after assembly is completed, the outer convex part 1311 and the input port and the output port thereon are located outside the outer shell 240 of the device main body 20. As shown in FIGS. 6 and 7, wherein FIG. 7 is a view of A direction of FIG. 6. The outer convex part 1311 is located on the first shell 131, and the input port 130b and the output port 130c are respectively communicated with the first hollow cavity 130a through the corresponding bending flow paths in the outer convex part 1311, forming the inflow flow path and the outflow flow path. Among them, the first hollow cavity 130a is arranged in the body of the first shell 131 as a whole in the shape of “U”, and the extension ends on both sides of the “U” shaped first hollow cavity 130a are respectively communicated with the input port 130b and the output port 130c. In this way, the low-temperature liquid cooling working medium flows into the inflow cavity 130a1 on one side of the “U” shaped first hollow cavity 130a through the input port 130b, and after changing the flow direction in the communication cavity 130a3 at the bending part, it flows into the outflow cavity 130a2 on the other side of the “U” shaped first hollow cavity 130a. The high-temperature liquid cooling working medium which has completed heat exchange flows out of the first shell 131 through the output port 130c.

[0065] In other possible implementation schemes, the first hollow cavity 130a in the shell can adopt other forms, such as but not limited to, being arranged in a meandering manner in the shell along the flow direction of the liquid working medium, as long as an internal flow path can be formed according to heat dissipation needs.

[0066] For the matched first connector 140 and second connector 250, liquid path conduction can be realized after insertion and butt joint matching, and the two are respectively sealed quick connectors after being pulled out, that is, in the normal state without butt joint matching, the first connector 140 and the second connector 250 are both self-sealing quick connectors. Please see FIGS. 8 and 9, wherein FIG. 8 is a structural schematic diagram of a matched first connector and second connector provided in the embodiment of the present application, and FIG. 9 is a butt joint state schematic diagram of the first connector and the second connector shown in FIG. 8.

[0067] As shown in FIG. 8, the first connector 140 and the second connector 250 adopt the same structure form of quick connector, which includes a sealing member 81, a connector shell 82, an elastic reset member 83, a limiting member 84, and a sealing ring 85. The sealing member 81 and the elastic reset member 83 are located in the connector shell 82, the butt joint interface end of the connector shell 82 has a sealing stop portion 821,

[0068] The sealing member 81 can be sealed against the sealing stop portion 821, and the press-fitting end of the sealing member 81 can extend out of the connector shell 82. In the embodiment, the sealing member 81 is a spherical structure. In other possible implementation schemes, the sealing member 81 can also adopt different structures, as long as it can be sealed against the sealing stop portion 821 while the press-fitting end thereof can extend out of the connector shell 82.

[0069] The limiting member 84 is arranged at the fixed end of the connector shell 82, and is used to be fixedly connected with the input port and the output port on the optical module shell. The middle part of the limiting member 84 has a through hole 841 to realize the communication between the connector shell 82 and the corresponding input port and output port. In specific implementation, the limiting member 84 arranged at the fixed end of the connector shell 82 can be independently processed and then assembled and fixed, or can be integrally processed and formed. The embodiment of the present application is not limited.

[0070] The elastic reset member 83 is pre-compressed and arranged between the sealing member 81 and the limiting member 84, and the quick connector in the normal state is in a sealed state. In specific implementation, the elastic reset member 83 can be a compression spring as shown in the figure. It can be understood that the elastic reset member 83 can also adopt other structure forms, as long as it can be deformed under pressure and release the deformation energy to push the sealing member 81 to reset. In other possible implementation schemes, the elastic reset member 83 and the sealing member 81 can also be a split structure as shown in the figure, or can be integrally processed and formed.

[0071] The sealing ring 85 is arranged on the end surface 822 of the joint shell 82, and when the first joint 140 and the second joint 250 are connected, the sealing ring 85 can form a reliable seal between the two. In other possible implementations, the first joint 140 and the second joint 250 can be provided with the sealing ring 85, and when the two are connected, a reliable seal can be formed.

[0072] After the optical module 10 is inserted into the optical cage of the device main body 20, as shown in FIG. 9, the compression end of the sealing member 81 of the first joint 140 and the second joint 250 is pressed and the elastic reset member 83 is deformed; after the end surfaces 822 of the two joint shells 82 abut, the sealing member 81 is separated from the corresponding sealing stop portion 821, the joint shells 82 of the two joints are connected, and reliable sealing between the joints is achieved through the sealing ring 85. After the optical module 10 is pulled out from the side of the device main body 20, the first joint 140 and the second joint 250 are synchronously separated, and the sealing member 81 can be quickly reset under the action of the elastic reset member 83, realizing the normal sealing of the quick joint.

[0073] In this way, the electrical interface of the PCBA 120 on the optical module 10 is disconnected from the electrical port connector 230 on the device main body 20, and the input joint 141 and the output joint 142 on the optical module 10 are disconnected from the liquid outlet joint 251 and the liquid return joint 252 on the device main body 20, respectively. Based on the sealed quick joint, the liquid cooling circuit can be quickly cut off, ensuring that the liquid cooling medium does not leak, and facilitating the maintenance of the optical module, thereby providing a good technical guarantee for ensuring the reliability of the device operation.

[0074] In order to improve the uniform temperature capability of the optical module shell, flow splitting fins and flow gathering fins can be arranged on the flow path in the hollow cavity. Please refer to FIG. 10, which is a structural schematic diagram of another hollow cavity provided by the embodiment of the present application. In order to clearly show the difference and relationship between the present embodiment and the hollow cavity described in FIG. 6, the same function of the structure is shown in the same mark in the figure.

[0075] As shown in FIG. 10, in the inflow cavity 130a1 and the outflow cavity 130a2 of the "U"-shaped first hollow cavity 130a, the flow distribution fins 133 are arranged along the extension direction of the flow path. The width of the inflow cavity 130a1 is smaller than the width of the outflow cavity 130a2, so as to increase the flow section of the outflow cavity 130a2. Thus, after the liquid cooling medium is heated in the inflow cavity 130a1, the liquid cooling medium has substantially equivalent heat exchange capacity in the range of the outflow cavity 130a2 based on the large flow capacity of the outflow cavity 130a2. The two turbulence fins 134 arranged in the inflow cavity 130a1 divide the inflow cavity 130a1 into three sub-flow paths, and the two turbulence fins 134 arranged in the outflow cavity 130a2 divide the outflow cavity 130a2 into two sub-flow paths. Thus, the flow velocity of the liquid cooling medium near the cavity wall of the two sides of the flow path can be ensured, the uniform temperature capacity of the shell in the range of the heat exchange surface can be effectively improved, and the overall heat dissipation capacity of the optical module can be improved. The structure is simple and the implementation cost is low.

[0076] Upstream of the flow distribution fins 133 in the inflow cavity 130a1, the turbulence fin 134 is arranged. Here, "upstream" and "downstream" in the following are defined based on the flow direction of the liquid cooling medium in the hollow cavity. As shown in FIG. 10, the turbulence fin 134 can be arranged opposite to the sub-flow path between the two adjacent flow distribution fins 133. Corresponding to the two flow distribution fins 133, the turbulence fin 134 is arranged in the inflow cavity 130a1 to disturb the liquid cooling medium flowing into the inflow cavity 130a1 through the input port 130b, so as to avoid the low-temperature cooling medium flowing into the middle sub-flow path, and has a good flow stabilizing effect, which can further improve the uniform temperature capacity.

[0077] Downstream of the flow distribution fins 133 in the outflow cavity 130a2, the turbulence fin 134 is arranged. Corresponding to the three flow distribution fins 133, the two turbulence fins 134 are arranged in the outflow cavity 130a2, and the turbulence fins 134 are arranged opposite to the sub-flow path between the two adjacent flow distribution fins 133, so as to disturb the liquid cooling medium flowing to the output port 130c and form a flow resistance that can reasonably adjust the flow velocity of the liquid cooling medium. Thus, based on the good flow stabilizing effect, the liquid cooling medium can be fully heat exchanged in the hollow cavity, and the heat exchange efficiency is improved.

[0078] It should be understood that the number of the turbulence fins 134 and the flow distribution fins 133 arranged in the inflow cavity 130a1 and the outflow cavity 130a2 is not limited to the arrangement shown in the figure, and can be determined according to the overall design requirements of the product. The embodiments of the present application are not limited.

[0079] The other functional components and connection relationships can be implemented in the same manner as the foregoing embodiments. Details are not described here.

[0080] In the foregoing embodiment, the turbulence fins 134 are located on the side of the hollow cavity close to the input port 130b and the output port 130c. In other specific implementations, the turbulence fins 134 can also be arranged on the side away from the input port 130b and the output port 130c. Please refer to FIG. 11, which is a structural schematic diagram of another hollow cavity provided by an embodiment of the present application. In order to clearly show the differences and connections between the present embodiment and the hollow cavity described in FIG. 10, the components and structures with the same functions are denoted by the same reference signs in the diagram.

[0081] Compared with the embodiment described in FIG. 10, the difference of the present embodiment is that the turbulence fins 134 are arranged downstream of the flow division fins 133 in the inflow cavity 130a1 and upstream of the flow division fins 133 in the outflow cavity 130a2. Similarly, each turbulence fin 134 is arranged opposite to the sub-flow path between the adjacent two flow division fins 133 to achieve good flow stabilization.

[0082] Other functional components and connection relationships can be implemented in the same way as the foregoing embodiments. Here, no further description is given,

[0083] In order to achieve better flow stabilization, the flow division fins 133 can be further optimized. Please refer to FIG. 12, which is a structural schematic diagram of another hollow cavity provided by an embodiment of the present application. In order to clearly show the differences and connections between the present embodiment and the hollow cavity described in FIG. 10, the components and structures with the same functions are denoted by the same reference signs in the diagram.

[0084] Compared with the embodiment described in FIG. 10, the difference of the present embodiment is that the flow division fins 133 in the inflow cavity 130a1 and the outflow cavity 130a2 are connected by the arc-shaped connecting fins 135. Thus, the communication cavity 130a3 of the first hollow cavity 130a is divided to form sub-flow paths, that is, the flow division fins 133 in the inflow cavity 130a1 and the flow division fins 133 in the outflow cavity 130a2 are the same in number and are connected one by one by the arc-shaped connecting fins 135 to form a plurality of continuous sub-flow paths arranged at intervals in the first hollow cavity 130a, avoiding crosstalk at the communication cavity 130a3, and each sub-flow path divides the hollow cavity to form an independent flow channel with good flow stabilization effect.

[0085] In order to avoid liquid leakage or splashing of the liquid cooling medium during plugging, a protective cover can also be included. Please refer to FIG. 13, which is a schematic diagram of another optical module provided by an embodiment of the present application. In order to clearly show the differences and connections between the present embodiment and the foregoing embodiments, the components and structures with the same functions are denoted by the same reference signs in the diagram.

[0086] As shown in FIG. 13, a protective cover 160 is sleeved outside the first joint 140 (the input joint 141 and the output joint 142) of the shell 130, and the protective cover 160 has a through hole (not shown in the figure) to realize the docking communication between the first joint 140 and the second joint 50. In this way, during the plugging and unplugging of the optical module, if liquid leakage or liquid cooling medium splashing occurs, the protective cover 160 can form effective shielding, which can ensure the normal operation of other devices and improve the operation reliability of the equipment.

[0087] In the foregoing embodiment, the input port 130b and the output port 130b of the optical module 10 in the unplugged state are sealed by the first joint 140 arranged at the input port 130b and the output port 130c of the first shell 131. In other specific implementations, the sealing function structure can also be arranged in the first hollow cavity 130a.

[0088] Please refer to FIG. 14, which is a structural schematic diagram of another hollow cavity provided by the embodiment of the application. As shown in the figure, a sealing member 81a and an elastic reset member 83a are arranged in the first hollow cavity 130a. The sealing member 81a is in abutting sealing with the inner wall of the first hollow cavity 130a communicating with the input port 130b, and the elastic reset member 83a is pre-compressed and arranged between the sealing member 81a and the shunt fin 133, and is in a sealing state in normal state.

[0089] After the optical module 10 is inserted into the optical cage, based on the pressure difference between the input port 130b and the output port 130c, the liquid cooling medium pushes the sealing member 81a away from the input port 130b side and flows into the shell, and simultaneously pushes the elastic reset member 83a to deform. After the optical module 10 is pulled out from the device main body 20 side, the sealing member 81a can be quickly reset under the action of the elastic reset member 83a, and the flow path of the input port 130b is blocked, and the normal sealing is realized. In this way, the first hollow cavity 130a is in a pressure balance state, and the liquid cooling medium in the first hollow cavity 130a can remain in a non-flowing state, and the optical module 10 in the unplugged state will not leak.

[0090] In specific implementations, the sealing member 81a is a spherical structure as shown in the figure, and the elastic reset member 83a can be a compression spring. It can be understood that the sealing member 81a and the elastic reset member 83a can also adopt other structural forms, as long as they can be deformed under pressure and release the deformation energy to push the sealing member 81a to reset. In other possible implementations, the elastic reset member 83a and the sealing member 81a can also be a split structure as shown in the figure, or they can be one.

[0091] It can be understood that the shunt fin 133 shown in FIG. 14 is used for positioning the elastic return member 83a, and the structure is simple and reliable. Of course, in other possible implementations, for the case where no shunt fin is arranged in the hollow cavity, a limiting member (not shown in the figure) can be arranged in the first hollow cavity 130a to position the elastic return member 83a to meet the functional requirements of pressure deformation. The embodiments of the present application are not limited.

[0092] Please refer to FIG. 15, which is a structural schematic diagram of another hollow cavity provided by the embodiments of the present application. As shown in the figure, the first hollow cavity 130a is provided with an elastic sealing member 81b and a limiting member 84b. Among them, the elastic sealing member 81b can be sealed against the inner wall of the first hollow cavity 130a communicating with the input port 130b, and is pre-compressed and arranged between the inner wall of the first hollow cavity 130a and the limiting member 84b, and is in a sealed state under normal circumstances.

[0093] Based on the pressure difference between the input port 130b and the output port 130c, the liquid cooling medium pushes the elastic sealing member 81b away from the input port 130b side and flows into the inside of the shell after the optical module 10 is inserted into the optical cage; under the positioning action of the limiting member 84b, the elastic sealing member 81b is deformed synchronously under pressure. After the optical module 10 is pulled out from the device main body 20 side, the elastic sealing member 81b can quickly recover the deformation, block the flow path of the input port 130b, and realize normal sealing. The first hollow cavity 130a is also in a pressure balance state, and the liquid cooling medium inside can remain in a non-flowing state, and the optical module 10 in the uninstalled state will not leak.

[0094] Generally, the heat generating device 122 on the circuit board 121 is arranged close to the first shell 131, the heat transfer path is short, and the heat exchange efficiency is good. In order to further improve the heat exchange capacity of the optical module, in other specific implementations, the second shell 132 of the shell 130 can also be provided with a hollow cavity that can accommodate the liquid cooling medium. Please refer to FIG. 16, which is another schematic diagram of an optical module provided by the embodiments of the present application.

[0095] As shown in FIG. 16, the optical module 10 includes a first shell 131 and a second shell 132, which are assembled to form a shell 130 that can accommodate a PCBA 120. In this embodiment, the first shell 131 has a first hollow cavity 130a, and the heat generated by the heat generating device on the PCBA 120 can be exchanged to the liquid cooling medium in the first hollow cavity 130a; the second shell 132 has a second hollow cavity 130d, so that the heat on the other side of the PCBA 120 is exchanged to the liquid cooling medium in the second hollow cavity 130d.

[0096] The second hollow cavity 130d can be in communication with the first hollow cavity 130a to form a liquid cooling medium circulation through the first joint 140 on the side of the first shell 131. In a specific implementation, the second shell 132 includes an input port 130e and an output port 130f in communication with the second hollow cavity 130d, respectively. The input port 130e on the side of the second shell 132 is in communication with the inflow flow path on the side of the first shell 131, and the output port 130f on the side of the second shell 132 is in communication with the outflow flow path on the side of the first shell 131. It should be noted that in the view direction shown in FIG. 4, the structural positions of the input port 130e and the output port 130f coincide, and the input port 130e and the output port 130f are shown by the same contour line in the figure.

[0097] For example, the input port 130e can be in communication with the input port 130b, and the output port 130f can be in communication with the output port 130c. In this way, the low-temperature liquid cooling medium can be synchronized into the second shell 132, ensuring that the second shell 132 has good heat exchange efficiency, and at the same time, the high-temperature liquid cooling medium that has completed heat exchange on the side of the second shell 132 is output through the output port 130f and the output port 130c, avoiding affecting the heat exchange efficiency on the side of the first shell 131.

[0098] In a specific implementation, as shown in FIG. 16, between the input port 130e and the input port 130b, and between the output port 130f and the output port 130c, a quick joint set 136 of adaptive connection can be used to realize liquid path communication. Of course, the corresponding liquid path communication can also be realized by the structure of the first shell 131 and the second shell 132, and the embodiments of the present application are not limited in this regard.

[0099] For another example, the input port 130e and the output port 130f on the side of the second shell 132 can also be in communication with the inflow part and the outflow part of the first hollow cavity 130a, respectively (not shown in the figure), and the liquid cooling medium circulation on the side of the second shell 132 can also be constructed.

[0100] In addition, in other possible implementation schemes, the second hollow cavity 130d can also be connected to the second joint arranged on the side of the device main body 20 through an independently configured first joint 140 to construct a liquid cooling medium circulation independent of the first hollow cavity 130a (not shown in the figure).

[0101] In addition, in order to reduce the thermal resistance, the first shell 131 and the second shell 132 can be attached to the PCBA 120 through a heat-conducting pad (not shown in the figure) or a heat-conducting gel to quickly conduct heat. The embodiments of the present application are not limited in this regard.

[0102] In addition to the foregoing optical module 10, as shown in Figure 1, the application also provides an optical communication device 100 applying the optical module 10. In a specific implementation, the optical module 10 is connected with the electrical port connector 230 of the device body 20 through its electrical signal interface to convert electrical signals into optical signals for output, or convert optical signals into electrical signals for output, or convert electrical signals into optical signals for output while converting optical signals into electrical signals for output. At the same time, the input port 130b and the output port 130c in communication with the cavity in the shell are in communication with the liquid path interface on the side of the device body 20, and the liquid cooling working medium circulation is constructed.

[0103] Based on the optical module with good heat dissipation capacity, one plug-in operation can realize the electrical connection of the optical module and the device body and complete the docking of the liquid cooling working medium circulation. It has good operability. At the same time, the input port and the output port on the side of the optical module are away from the docking position of the liquid path interface on the side of the device body, which can avoid the adverse effects of liquid leakage on the electrical connection link, and has good operation reliability. In addition, while establishing the liquid cooling working medium circulation, the air cooling heat dissipation flow cross section between the optical module and the optical cage can be ensured, and the air cooling heat dissipation effect is also achieved, which has good adaptability.

[0104] In actual application, the optical communication device can be a server computer, a router or a switch, etc. product type, and is particularly suitable for high-power, high-integration, and super-large-scale data center servers.

[0105] It should be understood that the device body 20 and other functional components of the optical communication device 100 are not the core of the application, and those skilled in the art can realize them according to the prior art, so this paper will not repeat them.

[0106] In addition, the ordinal numbers "first" and "second" used in this paper are only used to describe the same function of the structure or structure. It can be understood that the use of the ordinal numbers does not constitute a limitation on the understanding of the technical solutions claimed by the application.

[0107] The above is only the preferred embodiment of the application. It should be pointed out that for those skilled in the art, without departing from the principle of the application, a number of improvements and refinements can be made, which should also be regarded as the protection scope of the application.

Claims

1. An optical module for pluggable adaptation with a device body, characterized by, The optical module comprises a shell, a printed circuit board assembly and an optical port connector, the optical port connector is located at the front end of the shell and is connected with the printed circuit board assembly; at least the part of the printed circuit board assembly provided with a heating device is located in the shell, and the rear end of the printed circuit board assembly is provided with an electrical interface; The shell comprises a hollow cavity capable of containing a liquid cooling working medium, and an input port and an output port communicating with the hollow cavity, wherein the input port and the output port are located at the front of the shell, and the input port and the output port are both arranged towards the rear end side of the optical module and are respectively used for adaptively connecting with the liquid path interface on the device body side.

2. The optical module according to claim 1, characterized by The input port and the output port are respectively provided with a first connector, and the docking interface of the first connector is arranged towards the rear end side of the optical module and is used for adaptively connecting with a second connector on the device body side.

3. The optical module according to claim 2, characterized by The front end side of the shell has an outward protruding part, and the input port and the output port are arranged on the outward protruding part, and the first connector is located outside the outward protruding part, or the first connector is respectively located in the input port and the output port on the outward protruding part.

4. The optical module according to claim 2 or 3, characterized by The first connector is a self-sealing quick connector in a normal state.

5. The optical module according to claim 4, characterized by The first connector comprises a sealing member, a connector shell, an elastic return member and a limiting member, the sealing member and the elastic return member are located in the connector shell, and the docking interface end of the connector shell has a sealing stop part; wherein the sealing member can be sealed against the sealing stop part, and the sealing member has a press-fit end extending out of the connector shell; the limiting member is arranged at the fixed end of the connector shell, the limiting member is fixedly connected with the shell, and the middle part of the limiting member has a through hole to communicate with the corresponding input port and output port; the elastic return member is pre-compressed between the sealing member and the limiting member.

6. The optical module according to claim 5, characterized by The sealing member is a spherical sealing member, or the elastic return member is a compression spring.

7. The optical module according to claim 5 or 6, characterized by The connector shell and the limiting member are integrally processed and formed.

8. The optical module according to any one of claims 5 to 7, characterized by, The first connector further comprises a sealing ring arranged on the end face of the docking interface end of the connector shell, for sealing against the second connector on the device body side.

9. The optical module according to claim 1 or 2, characterized by The hollow cavity is provided with a sealing member, an elastic return member and a limiting member, the limiting member is fixedly arranged in the hollow cavity, the sealing member can be sealed against the hollow cavity wall communicating with the input port, and the elastic return member is pre-compressed between the sealing member and the limiting member.

10. The optical module according to claim 1 or 2, characterized by The hollow cavity is provided with an elastic sealing member and a limiting member, the limiting member is fixedly arranged in the hollow cavity, the elastic sealing member can be sealed against the hollow cavity wall communicating with the input port, and is pre-compressed between the inner wall of the hollow cavity and the limiting member.

11. The optical module according to any one of claims 1 to 10, characterized by, The hollow cavity is arranged in the body of the shell in a "U" shape, and the two side extension ends of the "U" shaped hollow cavity respectively communicate with the input port and the output port, wherein one side of the hollow cavity communicating with the input port is an inflow cavity, and the other side communicating with the output port is an outflow cavity, and the inflow cavity is connected with the outflow cavity through a communication cavity at a bending part.

12. The optical module of claim 11, wherein, The width of the inflow cavity is smaller than the width of the outflow cavity.

13. The optical module according to claim 11 or 12, characterized by The flow-in cavity and the flow-out cavity are provided with at least two flow distribution fins arranged along the extension direction of the flow path to separate the flow-in cavity and the flow-out cavity to form sub-flow paths; the upstream of the adjacent two flow distribution fins in the flow-in cavity and the downstream of the adjacent two flow distribution fins in the flow-out cavity are respectively provided with flow disturbance fins, and the flow disturbance fins are arranged opposite to the sub-flow paths between the corresponding adjacent two flow distribution fins in the extension direction of the flow path.

14. The optical module according to claim 13, characterized by The flow distribution fins in the flow-in cavity and the flow distribution fins in the flow-out cavity are the same in number, and the flow distribution fins in the flow-in cavity and the flow distribution fins in the flow-out cavity are arranged one by one through arc-shaped connecting fins.

15. The optical module according to claim 11 or 12, characterized by The flow-in cavity and the flow-out cavity are provided with at least two flow distribution fins arranged along the extension direction of the flow path to separate the flow-in cavity and the flow-out cavity to form sub-flow paths; the downstream of the adjacent two flow distribution fins in the flow-in cavity and the upstream of the adjacent two flow distribution fins in the flow-out cavity are respectively provided with flow disturbance fins, and the flow disturbance fins are arranged opposite to the sub-flow paths between the corresponding adjacent two flow distribution fins in the extension direction of the flow path.

16. The optical module according to any one of claims 1 to 15, characterized by, The shell comprises a first shell and a second shell connected with each other, the hollow cavity comprises a first hollow cavity arranged in the first shell and a second hollow cavity arranged in the second shell, and the first hollow cavity and the second hollow cavity are communicated.

17. The optical module of claim 16, wherein, The input port and the output port are arranged on the first shell and communicated with the first hollow cavity respectively.

18. The optical module according to claim 16 or 17, characterized by The second shell further comprises an input port and an output port communicated with the second hollow cavity respectively, the input port on the second shell side is communicated with the flow-in flow path on the first shell side, and the output port on the second shell side is communicated with the flow-out flow path on the first shell side.

19. The optical module of claim 18, wherein, The input port on the second shell side and the flow-in flow path on the first shell side, and the output port on the second shell side and the flow-out flow path on the first shell side are communicated through a quick connector group respectively.

20. An optical communication device, comprising: The optical communication device comprises a device main body and an optical module, the optical module is the optical module according to any one of claims 1 to 19, the device main body comprises a shell, a single board and an optical cage, the optical cage is connected with the single board, and the insertion port of the optical cage is exposed to the shell, the single board is provided with an electrical port connector, and the shell is provided with a liquid path interface; The optical module and the optical cage are pluggable connected, so that the electrical interface of the optical module is adaptively connected with the electrical port connector, and the input port and the output port of the optical module are adaptively connected with the liquid path interface on the shell.

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