Liquid cooling device for optical module

Abstract

The utility model relates to the technical field of optical module heat dissipation, and discloses a liquid cooling device for an optical module, which comprises an optical module assembly, a heat dissipation assembly and a top plate. A plurality of groups of plugging cavities are arranged in the optical module assembly; the heat dissipation assembly is arranged above the optical module assembly and abuts against the top end of the plugging cavity. The top plate is arranged above the heat dissipation assembly; a plurality of pressing units used for tightly attaching the heat dissipation assembly to the top end of the insertion cavity are arranged between the top plate and the heat dissipation assembly. The number of the pressing units is the same as that of the insertion cavities, and each group of pressing units and each group of insertion cavities are arranged in a one-to-one correspondence manner. By arranging the pressing unit and the heat dissipation assembly, the heat dissipation assembly is tightly pressed at the top end of the insertion cavity of the optical module assembly through the pressing unit of a wave structure, so that it is ensured that the heat dissipation assembly is in tight contact with an optical module in the insertion cavity, and air gaps in a heat transfer path are effectively reduced; therefore, the conduction efficiency of heat from the optical module to the heat dissipation assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical module heat dissipation technology, and in particular to a liquid cooling device for optical modules. Background Technology

[0002] Optical modules, as an important component of optical fiber communication, are optoelectronic devices that perform photoelectric conversion and electro-optic conversion during optical signal transmission. Operating at the physical layer of the OSI model, optical modules are one of the core components of an optical fiber communication system. They mainly consist of optoelectronic devices, functional circuits, and optical interfaces, and their primary function is to perform photoelectric conversion and electro-optic conversion in optical fiber communication.

[0003] As technology advances, the size of optical modules is gradually shrinking. To ensure their normal operation, liquid cooling devices are typically used to dissipate heat from the optical modules.

[0004] Currently, existing liquid cooling devices typically use four or more optical modules as a group. Due to machining tolerances, the height between each optical module and the cold plate after insertion into the interface varies. To solve this problem, graphene composite foam is commonly used to fill the gap between the cold plate and the optical module to ensure tight contact. However, the graphene composite foam in existing liquid cooling devices has a porous structure, which restricts heat transfer from the optical module to the cold plate, resulting in a significant decrease in the overall thermal conductivity, which cannot meet the high thermal conductivity requirements of the optical module liquid cooling system.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a liquid cooling device for optical modules.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A liquid cooling device for an optical module includes an optical module assembly, a heat dissipation assembly, and a top plate. The optical module assembly has multiple sets of insertion cavities for mounting the optical module. The heat dissipation assembly is located above the optical module assembly and abuts against the top of the insertion cavities for heat dissipation of the optical module. The top plate is located above the heat dissipation assembly. Multiple sets of clamping units are provided between the top plate and the heat dissipation assembly for tightly fitting the heat dissipation assembly to the top of the insertion cavities. The number of clamping units is the same as the number of insertion cavities, and each set of clamping units corresponds to each set of insertion cavities.

[0009] As further explained, the clamping unit is an elastic sheet, and the clamping unit is integrally made of elastic material; both ends of the clamping unit are fixed to the bottom end of the top plate.

[0010] As further explained, the clamping unit includes a first connecting part, a second connecting part, and at least two sets of elastic parts; the elastic parts are disposed between the first connecting part and the second connecting part, and adjacent sets of elastic parts are connected end to end.

[0011] As further explained, the elastic part has a structure that is high at both ends and low in the middle. The bottom end of the elastic part abuts against the top end of the heat dissipation component, so that the bottom end of the heat dissipation component is in close contact with the top end of the insertion cavity. The first connecting part, the elastic part, and the second connecting part are connected end to end in sequence to form a wave structure.

[0012] As further explained, the heat dissipation component includes a liquid cooling channel and a thermal pad; the thermal pad is disposed above the insertion cavity; the liquid cooling channel is disposed on the thermal pad, and the liquid cooling channel is provided with multiple sets of internal fins or internal threaded grooves.

[0013] As further explained, the liquid cooling channel includes an inlet pipe, an outlet pipe, and multiple sets of U-shaped tubes; the inlet pipe and the outlet pipe are symmetrically distributed on both sides of the optical module assembly; multiple sets of U-shaped tubes are arranged side by side between the inlet pipe and the outlet pipe, and each set of U-shaped tubes is correspondingly located at the top of each set of insertion cavities and contacts the thermal pad.

[0014] As further explained, the U-shaped tube has a gap in the center; a cold plate is fixedly connected to the gap.

[0015] As a further explanation, the cold plate is provided with an upwardly protruding contact block corresponding to the gap; the contact block abuts against both sides of the U-shaped tube.

[0016] As a further explanation, the bottom end of the cold plate is provided with an abutment portion extending into the insertion cavity; the abutment portion is located above the thermal pad.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0018] By setting up a clamping unit and a heat dissipation component, the heat dissipation component is pressed tightly against the top of the optical module's insertion cavity by the clamping unit with a wave structure, ensuring that the heat dissipation component is in close contact with the optical module in the insertion cavity, effectively reducing the air gap in the heat transfer path, and thus improving the heat conduction efficiency from the optical module to the heat dissipation component. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a liquid cooling device for an optical module provided by this utility model;

[0021] Figure 2 An exploded structural diagram of a liquid cooling device for an optical module provided by this utility model;

[0022] Figure 3 A schematic diagram of the overall structure of the top plate and the clamping unit provided by this utility model;

[0023] Figure 4 A schematic diagram of the overall structure of the heat dissipation component and the clamping unit provided by this utility model;

[0024] Figure 5 A schematic diagram of the internal structure of the heat dissipation component provided by this utility model.

[0025] The following are the labeling elements in the figure:

[0026] 10. Optical module assembly; 11. Plug-in cavity; 20. Heat dissipation assembly; 21. Liquid cooling channel; 211. Liquid inlet pipe; 212. Liquid outlet pipe; 213. U-shaped tube; 22. Thermal pad; 23. Cold plate; 231. Contact block; 232. Abutting part; 30. Top plate; 40. Pressing unit; 41. First connecting part; 42. Second connecting part; 43. Elastic part. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] In one embodiment of this utility model, such as Figure 1-5 As shown, a liquid cooling device for optical modules is provided, including an optical module assembly 10, a heat dissipation assembly 20, and a top plate 30. The optical module assembly 10 has multiple sets of insertion cavities 11 for mounting the optical module. The heat dissipation assembly 20 is located above the optical module assembly 10 and abuts against the top of the insertion cavity 11 for heat dissipation of the optical module. The top plate 30 is located above the heat dissipation assembly 20. Multiple sets of clamping units 40 are provided between the top plate 30 and the heat dissipation assembly 20 for tightly fitting the heat dissipation assembly 20 to the top of the insertion cavity 11. The number of clamping units 40 is the same as the number of insertion cavities 11, and each set of clamping units 40 corresponds one-to-one with each set of insertion cavities 11.

[0033] In this embodiment, the top of the insertion cavity 11 has a first slot with an upward opening, and one side of the insertion cavity 11 has a second slot with an outward opening. The optical module is inserted into the optical module assembly 10 through the second slot, and then the bottom end of the heat dissipation assembly 20 is pressed into the first slot by the pressing unit 40, so that the bottom end of the heat dissipation assembly 20 is tightly attached to the top of the optical module, effectively reducing the air gap in the heat transfer path, thereby improving the heat conduction efficiency from the optical module to the heat dissipation assembly 20.

[0034] By setting up a pressing unit 40 and a heat dissipation component 20, the heat dissipation component 20 is pressed tightly against the top of the insertion cavity 11 of the optical module component 10 by the pressing unit 40 with a wave structure, so as to ensure that the heat dissipation component 20 is in close contact with the optical module in the insertion cavity 11, effectively reducing the air gap in the heat transfer path, thereby improving the heat conduction efficiency from the optical module to the heat dissipation component 20.

[0035] Preferably, the clamping unit 40 is an elastic sheet, and the clamping unit 40 is integrally made of an elastic material, such as an elastic metal, stainless steel, or alloy. Both ends of the clamping unit 40 are fixed to the bottom of the top plate 30. By using the clamping unit 40 with an elastic sheet, the heat dissipation component 20 is tightly pressed against the top of the insertion cavity 11 of the optical module component 10, ensuring close contact between the heat dissipation component 20 and the optical module within the insertion cavity 11. This solves the heat transfer problem caused by traditional porous foam structures, thereby ensuring good heat transfer performance under various operating conditions.

[0036] Specifically, the clamping unit 40 includes a first connecting portion 41, a second connecting portion 42, and at least two sets of elastic portions 43. The elastic portions 43 are located between the first connecting portion 41 and the second connecting portion 42, and adjacent sets of elastic portions 43 are connected end-to-end. The elastic portions 43 have a structure that is high at both ends and low in the middle, with the bottom end of the elastic portion 43 abutting against the top end of the heat dissipation assembly 20, ensuring a tight fit between the bottom end of the heat dissipation assembly 20 and the top end of the insertion cavity 11. The first connecting portion 41, the elastic portion 43, and the second connecting portion 42 are connected end-to-end in sequence to form a wave structure. By setting the clamping unit 40 with a wave structure, the contact points between the clamping unit 40 and the heat dissipation assembly 20 are increased, further ensuring tight contact between the heat dissipation assembly 20 and the optical module inside the insertion cavity 11, and improving the heat transfer efficiency from the optical module to the heat dissipation assembly 20.

[0037] Preferably, the heat dissipation assembly 20 includes a liquid cooling channel 21 and a thermal pad 22. The thermal pad 22 is disposed above the insertion cavity 11 and is snapped to the bottom end of the liquid cooling channel 21 by a fixing frame. The liquid cooling channel 21 is integrally made of copper material, and the thermal pad 22 is made of thermally conductive silicone. The liquid cooling channel 21 is disposed on the thermal pad 22, and the liquid cooling channel 21 has multiple sets of internal fins or internal threaded grooves (not shown in the figure).

[0038] By setting up liquid cooling channel 21 and thermal pad 22, the combined use of the two directly replaces the porous foam structure, achieving more efficient heat transfer and meeting the high thermal conductivity requirements of the optical module liquid cooling heat dissipation system. Furthermore, by setting internal fins or internal threaded grooves in the liquid cooling channel 21, the heat exchange area in the liquid cooling channel 21 is increased, effectively improving the heat exchange effect of the coolant and achieving more efficient heat transfer, thereby further improving the heat dissipation effect of the liquid cooling device.

[0039] Specifically, the liquid cooling channel 21 includes an inlet pipe 211, an outlet pipe 212, and multiple sets of U-shaped tubes 213. The inlet pipe 211 and the outlet pipe 212 are symmetrically distributed on both sides of the optical module assembly 10. Multiple sets of U-shaped tubes 213 are arranged side by side between the inlet pipe 211 and the outlet pipe 212, and each set of U-shaped tubes 213 is correspondingly located at the top of each set of insertion cavities 11 and contacts the thermal pad 22. By setting the U-shaped tubes 213 and the cold plate 23, the heat dissipation area is increased, and each set of U-shaped tubes 213 is independently paired with its corresponding insertion cavity 11 to conduct heat to the corresponding optical module, ensuring that each set of optical modules can dissipate heat stably without interference, thereby improving the overall heat transfer efficiency.

[0040] In this embodiment, the U-shaped tube 213 includes a straight section and a bent section. The bent section is located above the heat-conducting pad 22 and abuts against the heat-conducting pad 22. The straight section is located on one side of the bent section and forms a stepped structure with the bent section. Thus, the straight section is higher than the bent section, and the straight section and the bent section are connected by an inclined section or a right-angle section. That is, the straight section exhibits an independent floating state, so that when the bent section is pressed by the pressing unit 40, the straight section will not be deformed by the pressure of the bent section, thus preventing the straight section from interfering with external components and improving the practicality of the liquid cooling device.

[0041] Furthermore, the U-shaped tube 213 has a gap in the center. A cold plate 23 is fixedly connected within the gap, and the cold plate 23 is made of copper in one piece. By setting the cold plate 23, the heat dissipation area between the U-shaped tube 213 and the heat-conducting pad 22 is increased, further improving the overall heat transfer efficiency.

[0042] Furthermore, the cold plate 23 is provided with an upwardly protruding contact block 231 corresponding to the gap. The contact block 231 abuts against both sides of the U-shaped tube 213. By setting the contact block 231, the heat dissipation area between the U-shaped tube 213 and the heat-conducting pad 22 is increased, and a tighter fit between the contact block 231 and the U-shaped tube 213 is achieved, further improving the heat transfer between the two, thereby improving the overall heat transfer efficiency.

[0043] Furthermore, the bottom end of the cold plate 23 is provided with an abutment portion 232 extending into the insertion cavity 11. The abutment portion 232 is located above the thermal pad 22. By providing the abutment portion 232, the bottom end of the cold plate 23 is not restricted by the first slot on the insertion cavity 11, and the cold plate 23 can better contact the thermal pad 22 to ensure a tight fit between the two, thereby improving the overall heat transfer efficiency.

[0044] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A liquid cooling device for an optical module, characterized in that, include: An optical module assembly, wherein the optical module assembly has multiple sets of plug-in cavities for installing optical modules; A heat dissipation component is disposed above the optical module component and abuts against the top of the insertion cavity, for heat dissipation of the optical module; A top plate is provided above the heat dissipation component; multiple sets of clamping units are provided between the top plate and the heat dissipation component for tightly fitting the heat dissipation component to the top of the insertion cavity; The number of clamping units is the same as the number of insertion cavities, and each group of clamping units is set in a one-to-one correspondence with each group of insertion cavities.

2. The liquid cooling device for optical modules according to claim 1, characterized in that, The clamping unit is an elastic sheet, and the clamping unit is integrally made of elastic material; both ends of the clamping unit are fixed to the bottom of the top plate.

3. The liquid cooling device for optical modules according to claim 2, characterized in that, The clamping unit includes a first connecting part, a second connecting part, and at least two sets of elastic parts; the elastic parts are disposed between the first connecting part and the second connecting part, and adjacent sets of elastic parts are connected end to end.

4. The liquid cooling device for an optical module according to claim 3, characterized in that, The elastic part has a structure that is high at both ends and low in the middle. The bottom end of the elastic part abuts against the top end of the heat dissipation component, so that the bottom end of the heat dissipation component is tightly fitted with the top end of the insertion cavity. The first connecting part, the elastic part, and the second connecting part are connected end to end in sequence to form a wave structure.

5. The liquid cooling device for an optical module according to claim 1, characterized in that, The heat dissipation assembly includes a liquid cooling channel and a thermal pad; the thermal pad is disposed above the insertion cavity; the liquid cooling channel is disposed on the thermal pad, and the liquid cooling channel is provided with multiple sets of internal fins or internal threaded grooves.

6. The liquid cooling device for an optical module according to claim 5, characterized in that, The liquid cooling channel includes an inlet pipe, an outlet pipe, and multiple sets of U-shaped tubes; the inlet pipe and the outlet pipe are symmetrically distributed on both sides of the optical module assembly; multiple sets of U-shaped tubes are arranged in parallel between the inlet pipe and the outlet pipe, and each set of U-shaped tubes is correspondingly located at the top of each set of insertion cavities and contacts the thermal pad.

7. The liquid cooling device for an optical module according to claim 6, characterized in that, The U-shaped tube has a gap in the center; a cold plate is fixed in the gap.

8. The liquid cooling device for an optical module according to claim 7, characterized in that, The cold plate is provided with an upwardly protruding contact block corresponding to the gap; the contact block abuts against both sides of the U-shaped tube.

9. The liquid cooling device for an optical module according to claim 8, characterized in that, The bottom end of the cold plate is provided with an abutment portion extending into the insertion cavity; the abutment portion is located above the thermal pad.

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