Optical module radiator and optical module assembly

Abstract

The invention discloses an optical module radiator and an optical module assembly, and relates to the technical field of communication.The optical module radiator comprises a heat exchange shell, a pressure regulating device and a plurality of metal films, and a heat exchange cavity used for containing heat exchange media is formed in the heat exchange shell; the bottom of the heat exchange shell is provided with a plurality of first communication ports used for being in one-to-one correspondence with a plurality of optical module cages of the optical module assembly, the first communication ports are communicated with the heat exchange cavity, the plurality of metal films are in one-to-one correspondence with the plurality of first communication ports, and each metal film covers the corresponding first communication port. The pressure adjusting device is used for adjusting the medium pressure of the heat exchange medium, the optical module radiator is of an integrated structure, one heat exchange shell corresponds to a plurality of optical modules, fasteners and independent heat pipes are greatly reduced, assembly is simplified, cost is reduced, the metal film can be attached to the top contour of the optical modules in a self-adaptive mode, contact thermal resistance between the metal film and the optical modules is reduced, and the service life of the optical modules is prolonged. The heat conduction efficiency is obviously improved, and the heat dissipation efficiency is further improved.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to an optical module heat sink and an optical module assembly. Background Technology

[0002] With the development of communication technology, optical modules generate a lot of heat during operation, requiring heat sinks for effective heat dissipation. Since optical modules need to be plugged in and out during routine maintenance, and there are height tolerances between different optical modules, the heat sink must be able to move up and down to accommodate the plugging and unplugging of the optical modules, ensuring a proper fit between the heat sink and the optical module.

[0003] In related technologies, heat sinks used to dissipate heat from optical modules are usually independent, that is, one heat sink corresponds to one optical module, and each heat sink requires a separate set of fasteners. This occupies internal space of the equipment, limits the size of the heat sink, and thus reduces the efficiency of the heat sink. Summary of the Invention

[0004] The main objective of this invention is to provide an optical module heat sink and an optical module assembly, which aims to improve heat dissipation efficiency.

[0005] To achieve the above objectives, the present invention proposes an optical module heat sink, comprising: a heat exchange shell, a voltage regulating device, and multiple metal films. The heat exchange shell has an internal heat exchange cavity for accommodating a heat exchange medium. The bottom of the heat exchange shell has multiple first communication ports corresponding one-to-one with multiple optical module cages of the optical module assembly, and the first communication ports are connected to the heat exchange cavity. Each of the multiple metal films corresponds one-to-one with a single first communication port, and each metal film covers a corresponding first communication port. The voltage regulating device is used to adjust the pressure of the heat exchange medium.

[0006] In one embodiment, the pressure regulating device includes a rubber elastic membrane, and the bottom of the heat exchange shell is provided with a second communication port connected to the heat exchange cavity. The rubber elastic membrane covers the second communication port, and the rubber elastic membrane can deform in the extension direction of the second communication port to adjust the medium pressure of the heat exchange medium.

[0007] In one embodiment, the pressure regulating device includes: a metal elastic membrane, a pressure plate, an adjusting bolt, and a spring. The bottom of the heat exchange shell is further provided with a second communication port connected to the heat exchange cavity. The metal elastic membrane covers the second communication port and can deform in the extension direction of the second communication port to adjust the medium pressure of the heat exchange medium. The pressure plate is located on the side of the metal elastic membrane away from the heat exchange shell. The adjusting bolt includes a connected rod and a head. The rod passes through the pressure plate and is screwed to the heat exchange shell. The spring is clamped between the pressure plate and the head.

[0008] In one embodiment, the pressure regulating device includes: a connecting pipe, a booster pump, and a pressure relief valve, both ends of the connecting pipe being connected to the heat exchange chamber; the booster pump and the pressure relief valve are both located on the connecting pipe, the booster pump being used to increase the medium pressure of the heat exchange medium, and the pressure relief valve being used to decrease the medium pressure of the heat exchange medium.

[0009] In one embodiment, the thickness of the metal film is δ, and δ satisfies the relationship: 0.01mm≤δ≤0.1mm.

[0010] In one embodiment, the heat exchange shell is made of aluminum.

[0011] In one embodiment, the metal film is made of one of stainless steel, nickel alloy, and titanium alloy.

[0012] In one embodiment, the heat exchange cavity is provided with flow guide ribs to guide the flow of the heat exchange medium and so that the pressure is uniformly transmitted to each of the metal films.

[0013] In one embodiment, the optical module heat sink further includes heat dissipation fins disposed on the outer surface of the heat exchange shell.

[0014] The present invention also proposes an optical module assembly, comprising: a substrate, an optical module heat sink, and a plurality of optical module cages, wherein the optical module heat sink includes the aforementioned optical module heat sink, and the heat exchange shell of the optical module heat sink is disposed on the substrate; the plurality of optical module cages are disposed between the heat exchange shell and the substrate, and the top of the optical module cage is provided with an opening for the metal thin film to contact the optical module.

[0015] In the technical solution of this invention, the optical module heat sink adopts an integrated structure, with one heat exchange shell corresponding to multiple optical modules, which greatly reduces fasteners and independent heat pipes, simplifies assembly, reduces costs, and increases the heat dissipation area, thereby improving the overall heat dissipation efficiency. Under the action of the pressure regulating device, the heat exchange medium in the heat exchange cavity causes the metal film covering the connection port to deform. When the optical module is inserted, the metal film can adaptively fit the top contour of the optical module, accommodate the height tolerance of different modules, and significantly reduce the contact thermal resistance. The pressure regulating device adjusts the medium pressure to enhance the fit and heat dissipation when the pressure is increased, and to reduce the insertion and removal resistance and protect the module when the pressure is decreased, thus balancing efficient heat dissipation and convenient insertion and removal. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a perspective view of an embodiment of the optical module heat sink provided by the present invention.

[0018] Figure 2 For having Figure 1 A 3D view of the optical module components in the optical module heat sink.

[0019] Figure 3 for Figure 2 A 3D view of the substrate and the optical module cage.

[0020] Figure 4 for Figure 2 A cross-sectional view of the optical module component.

[0021] Figure 5 This is a perspective view of another embodiment of the optical module heat sink provided by the present invention.

[0022] Figure 6 This is a perspective view of yet another embodiment of the optical module heat sink provided by the present invention.

[0023] Explanation of icon numbers:

[0024] 10. Optical module heat sink; 1. Heat exchange shell; 11. Heat exchange cavity; 12. First connecting port; 13. Second connecting port; 2. Metal film; 3. Pressure regulating device; 31. Rubber elastic diaphragm; 32. Metal elastic diaphragm; 33. Pressure plate; 34. Adjusting bolt; 35. Spring; 36. Connecting pipe; 37. Booster pump; 38. Pressure relief valve; 4. Heat dissipation fins; 100. Optical module assembly; 20. Substrate; 30. Optical module cage; 301. Window; 40. Optical module.

[0025] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0029] This invention proposes a heat sink 10 for optical modules.

[0030] Please see Figures 1-4 In one embodiment of the present invention, the optical module heat sink 10 includes a heat exchange shell 1, a pressure regulating device 3, and a plurality of metal films 2. The heat exchange shell 1 has a heat exchange cavity 11 for accommodating the heat exchange medium. The bottom of the heat exchange shell 1 has a plurality of first communication ports 12 that correspond one-to-one with the plurality of optical module cages 30 of the optical module assembly 100. The first communication ports 12 are connected to the heat exchange cavity 11. The plurality of metal films 2 correspond one-to-one with the plurality of first communication ports 12. Each metal film 2 covers the corresponding first communication port 12. The pressure regulating device 3 is used to adjust the medium pressure of the heat exchange medium.

[0031] It should be noted that the optical module cage 30 is used for the insertion and installation of the optical module 40. The optical module 40 is a component in optical communication equipment, used to realize the mutual conversion between optical signals and electrical signals, and it generates a lot of heat during operation.

[0032] It is understandable that when the heat exchange medium is injected into the heat exchange cavity 11, the metal film 2 can deform under the pressure of the heat exchange medium, causing the metal film 2 to bulge downwards. When the optical module 40 is inserted into the optical module cage 30, since the top of the optical module cage 30 is provided with an opening 301, the top of the optical module 40 can abut against and squeeze the lower surface of the metal film 2. After the metal film 2 is deformed under pressure, it can adaptively fit the top contour of the optical module 40, which is conducive to the tight fit between the metal film 2 and the surface of the optical module 40, adapting to the height tolerance of different optical modules 40, reducing the contact thermal resistance between the metal film 2 and the optical module 40, and significantly improving the heat conduction efficiency. The heat generated by the optical module 40 during operation can be quickly conducted to the heat exchange medium through the metal film 2, and then dissipated through the heat exchange shell 1, thereby achieving efficient heat dissipation of the optical module 40.

[0033] In this embodiment, the metal thin film 2 is flexible, which can achieve heat conduction without hindering the insertion and removal of the optical module 40. The heat exchange medium can be water, oil, etc.

[0034] The pressure regulating device 3 is used to adjust the pressure of the heat exchange medium, which can adjust the deformation of the metal film 2. Specifically, when the pressure of the heat exchange medium is increased, the downward bulge of the metal film 2 increases, which can improve the tightness of the fit between the optical module 40 and the metal film 2, and further reduce the contact thermal resistance between the optical module 40 and the metal film 2, thereby further improving the heat conduction efficiency and the heat dissipation performance of the optical module heat sink 10. When the pressure of the heat exchange medium is decreased, the downward bulge of the metal film 2 decreases, which can reduce the pressure applied to the optical module 40, thereby reducing the insertion and removal resistance of the optical module 40, facilitating quick replacement of the optical module 40. At the same time, it can also reduce the risk of deformation of the optical module 40 shell or damage to the interface due to excessive pressure. In this embodiment, the pressure regulating device 3 can achieve a dynamic balance between heat dissipation performance and ease of operation by adjusting the pressure of the heat exchange medium.

[0035] Furthermore, the optical module heat sink 10 of the present invention adopts an integral heat exchange shell 1, and the bottom of the heat exchange shell 1 has multiple first communication ports 12 corresponding one-to-one with multiple optical module cages 30, thereby realizing a one-piece structure in which one heat sink provides centralized heat dissipation for multiple optical modules 40. Compared with the prior art, where each optical module 40 needs to be equipped with an independent heat sink and independent fastener, the one-piece structure of the present invention can significantly reduce the number of fasteners and eliminate the complex discrete heat pipe structure, thereby simplifying the overall assembly structure and significantly reducing manufacturing costs. At the same time, this one-piece structure can make full use of the overall physical space above multiple optical modules 40, maximize the volume and heat dissipation area of ​​the heat exchange shell 1, and significantly improve the overall heat dissipation efficiency of the heat sink.

[0036] In the technical solution of the present invention, the optical module heat sink 10 adopts a one-piece structure, with one heat exchange shell 1 corresponding to multiple optical modules 40, which greatly reduces fasteners and independent heat pipes, simplifies assembly, reduces costs, and increases the heat dissipation area and improves the overall heat dissipation efficiency. Under the action of the pressure regulating device 3, the heat exchange medium in the heat exchange cavity 11 causes the metal film 2 covering the communication port to deform. When the optical module 40 is inserted, the metal film 2 can adaptively fit the top contour of the optical module 40, be compatible with the height tolerance of different modules, and significantly reduce the contact thermal resistance. The pressure regulating device 3 adjusts the medium pressure to enhance the fit and heat dissipation when the pressure is increased, and reduce the insertion and removal resistance and protect the module when the pressure is decreased, thus taking into account both efficient heat dissipation and convenient insertion and removal.

[0037] Please see Figure 1 In an embodiment of the present invention, the pressure regulating device 3 includes a rubber elastic membrane 31, and the bottom of the heat exchange shell 1 is also provided with a second communication port 13 that communicates with the heat exchange cavity 11. The rubber elastic membrane 31 covers the second communication port 13, and the rubber elastic membrane 31 can deform in the extension direction of the second communication port 13 to adjust the medium pressure of the heat exchange medium.

[0038] It is understandable that when the heat exchange medium is injected into the heat exchange cavity 11, under the pressure of the heat exchange medium, the rubber elastic membrane 31 is pressed and bulges outward from the heat exchange cavity 11, that is, bulges downward. After the heat exchange medium is injected and the heat exchange cavity 11 is sealed, the rubber elastic membrane 31 can apply a continuous elastic reaction force to the heat exchange medium, thereby increasing the pressure of the heat exchange medium, thereby increasing the pressure exerted by the heat exchange medium on the metal film 2, which can effectively improve the tightness of the fit between the optical module 40 and the metal film 2, and further reduce the contact thermal resistance between the optical module 40 and the metal film 2, thereby further improving the thermal conductivity and the heat dissipation performance of the optical module heat sink 10.

[0039] Please see Figure 5 In an embodiment of the present invention, the pressure regulating device 3 includes a metal elastic membrane 32, a pressure plate 33, an adjusting bolt 34, and a spring 35. The bottom of the heat exchange shell 1 is also provided with a second communication port 13 that communicates with the heat exchange cavity 11. The metal elastic membrane 32 covers the second communication port 13. The metal elastic membrane 32 can deform in the extension direction of the second communication port 13 to adjust the medium pressure of the heat exchange medium. The pressure plate 33 is located on the side of the metal elastic membrane 32 away from the heat exchange shell 1. The adjusting bolt 34 includes a connected rod and a head. The rod passes through the pressure plate 33 and is screwed to the heat exchange shell 1. The spring 35 is sandwiched between the pressure plate 33 and the head.

[0040] Understandably, when the screwing depth of the adjusting bolt 34 on the heat exchange shell 1 is changed by rotating the head of the adjusting bolt 34, the rod will drive the head to move axially, thereby changing the compression of the spring 35. When the depth of the adjusting bolt 34 screwed into the heat exchange shell 1 increases, the head moves closer to the pressure plate 33, the spring 35 is further compressed, and its elastic force on the pressure plate 33 increases. The pressure plate 33 then transmits this force to the metal elastic membrane 32, causing the metal elastic membrane 32 to indent into the heat exchange cavity 11, thereby increasing the pressure applied to the heat exchange medium in the heat exchange cavity 11. Conversely, when the depth of the adjusting bolt 34 screwed out of the heat exchange shell 1 increases, the head moves away from the pressure plate 33, the compression of the spring 35 decreases, the elastic force on the pressure plate 33 weakens, and the metal elastic membrane 32 bulges out of the heat exchange cavity 11 under the action of the heat exchange medium pressure or its own elasticity, and the medium pressure of the heat exchange medium decreases accordingly. In this way, the pressure of the heat exchange medium can be adjusted precisely and conveniently, thereby flexibly adjusting the pressure on the metal film 2. This ensures that the optical module 40 and the metal film 2 maintain good adhesion under different operating conditions, effectively reducing contact thermal resistance and thus stabilizing and improving the heat dissipation performance of the optical module heat sink 10 to meet the heat dissipation requirements of the optical module 40 when operating at different power levels.

[0041] Please see Figure 6 In an embodiment of the present invention, the pressure regulating device 3 includes a connecting pipe 36, a booster pump 37, and a pressure relief valve 38. Both ends of the connecting pipe 36 are connected to the heat exchange chamber 11. The booster pump 37 and the pressure relief valve 38 are both located on the connecting pipe 36. The booster pump 37 is used to increase the pressure of the heat exchange medium, and the pressure relief valve 38 is used to decrease the pressure of the heat exchange medium.

[0042] Understandably, when the pressure of the heat exchange medium is within the preset range, both the booster pump 37 and the pressure relief valve 38 can be in the closed state to maintain the stability of the heat exchange medium pressure, avoid damage to the optical module 40 due to excessive medium pressure, and avoid loosening of the connection between the optical module 40 and the metal film 2 due to insufficient medium pressure. This ensures the reliability and safety of the optical module 40 while guaranteeing the heat dissipation effect.

[0043] When the pressure of the heat exchange medium is less than the lower limit of the preset range, the booster pump 37 starts and the pressure relief valve 38 closes. When the heat exchange medium is pumped from the inlet to the outlet of the booster pump 37, the booster pump 37 can increase the pressure of the heat exchange medium, so that the pressure of the heat exchange medium can quickly rise back to the preset range, so as to ensure the tight bonding between the optical module 40 and the metal film 2.

[0044] When the pressure of the heat exchange medium exceeds the upper limit of the preset range, the pressure relief valve 38 opens and the booster pump 37 closes, allowing some of the heat exchange medium to be discharged through the pressure relief valve 38. This quickly reduces the pressure of the heat exchange medium, causing it to drop rapidly to the preset range and preventing excessive pressure from causing mechanical damage to the optical module 40.

[0045] In an embodiment of the present invention, the thickness of the metal film 2 is δ, which satisfies the relationship: 0.01mm≤δ≤0.1mm. For example, the thickness of the metal film 2 can be 0.01mm, 0.05mm, 0.1mm, etc., which can ensure the safe and stable operation of the optical module 40 while achieving efficient heat dissipation.

[0046] Understandably, when δ < 0.01 mm, the metal film 2 is relatively thin and has low structural strength. Under the pressure of the heat exchange medium, it is prone to excessive deformation or even breakage, making it difficult to prevent direct contact between the heat exchange medium and the optical module 40, which may lead to short circuits or damage to the optical module 40. When δ > 0.1 mm, the metal film 2 is relatively thick, resulting in a longer path for heat transfer from the optical module 40 to the heat exchange medium, reducing efficiency and weakening the heat dissipation effect of the radiator. It is difficult to dissipate the heat generated by the optical module 40 during operation in a timely manner. At the same time, the high structural strength of the metal film 2 makes it difficult to deform, leading to a decrease in the adhesion between the metal film 2 and the surface of the optical module 40, an increase in contact thermal resistance, and a significant reduction in heat dissipation performance.

[0047] In this embodiment, the thickness of the metal film 2 is in the range of 0.01mm to 0.1mm. This ensures that the metal film 2 has sufficient structural strength to withstand the pressure of the heat exchange medium, has good thermal conductivity, and ensures the adhesion between the metal film 2 and the surface of the optical module 40. Thus, while achieving efficient heat dissipation, it also ensures the safe and stable operation of the optical module 40.

[0048] In an embodiment of the present invention, the heat exchange shell 1 is made of aluminum.

[0049] Understandably, aluminum possesses excellent thermal conductivity. When the heat generated by the optical module 40 is conducted to the heat exchange medium via the metal film 2, the aluminum heat exchange shell 1 can quickly and evenly diffuse and dissipate the heat to the external environment, effectively reducing heat accumulation inside the heat sink and further improving overall heat dissipation efficiency. Simultaneously, aluminum is characterized by its low density and light weight, which can reduce the overall weight of the heat sink while maintaining structural strength. This is beneficial for the lightweight design of the optical module assembly 100, facilitating installation and transportation. Furthermore, a dense oxide film easily forms on the surface of aluminum, effectively reducing the risk of corrosion to the internal aluminum substrate, thereby improving the corrosion resistance and service life of the heat exchange shell 1. In addition, aluminum has good processing properties, making it easy to manufacture the required heat exchange shell 1 structure through processes such as die casting and machining, with relatively low cost, which is conducive to the large-scale production and application of heat sinks.

[0050] In an embodiment of the present invention, the metal film 2 is made of one of stainless steel, nickel alloy, and titanium alloy.

[0051] It is understandable that stainless steel, nickel alloys, and titanium alloys are all high-strength metallic materials with excellent structural stability and mechanical strength. These materials maintain the integrity of the metal film 2 during long-term operation of the optical module 40, preventing damage due to thermal stress or minor external impacts and ensuring a continuous and unobstructed heat transfer path. Simultaneously, these alloy materials have good thermal conductivity, efficiently transferring the heat generated by the optical module 40 to the heat exchange medium. Furthermore, stainless steel, nickel alloys, and titanium alloys possess good corrosion resistance, effectively resisting the erosion of the metal film 2 by the heat exchange medium, extending the service life of the metal film 2, and ensuring the long-term stable operation of the optical module heat sink 10. Moreover, these alloy materials form a good bond with the aluminum heat exchange shell 1, facilitating a stable connection through welding, bonding, or other processes, and ensuring airtightness.

[0052] In an embodiment of the present invention, the heat exchange cavity 11 is provided with flow guide ribs to guide the flow of the heat exchange medium and so that the pressure is uniformly transmitted to each metal film 2.

[0053] Understandably, by uniformly transmitting pressure, each metal film 2 can generate a moderate and consistent clamping force when in contact with the corresponding optical module 40. This helps ensure the tightness of the fit between each metal film 2 and the corresponding optical module 40, thereby guaranteeing the heat dissipation effect for each optical module 40. In addition, the design of the airflow guide ribs can also enhance the structural strength of the heat exchange shell 1, reduce the risk of deformation of the heat exchange shell 1 due to internal pressure changes during long-term use, and further ensure the stability and reliability of the optical module heat sink 10.

[0054] Specifically, the flow guide ribs can be configured as strip-shaped or plate-shaped structures extending along the internal flow path of the heat exchange cavity 11, with a height slightly lower than the height of the heat exchange cavity 11. These ribs form gaps with the inner wall of the heat exchange cavity 11 and the wall surface where the metal film 2 is located, allowing the heat exchange medium to flow within the channels between the flow guide ribs. The arrangement of the flow guide ribs can be designed according to the number and position of the metal film 2 and the desired medium flow path. For example, parallel arrangement can be used to form several parallel main channels between the guide ribs, ensuring that the heat exchange medium can be evenly distributed to the corresponding areas of each metal film 2. Alternatively, a radial or grid arrangement can be used, starting from the inlet of the heat exchange medium, to disperse and guide the medium to each metal film 2 through the guidance of the guide ribs, avoiding uneven pressure in local areas due to excessive or insufficient medium flow. When the heat exchange medium enters the heat exchange cavity 11 from the inlet, its flow direction is regulated under the constraint and guidance of the guide ribs, reducing the disordered flow phenomenon of the heat exchange medium in the heat exchange cavity 11. By dividing and guiding the flow of the heat exchange medium, the guide ribs help the heat exchange medium to evenly fill the entire space of the heat exchange cavity 11, thereby making the pressure on each metal film 2 tend to be consistent, ensuring that each metal film 2 can obtain a moderate and consistent clamping force when in contact with the corresponding optical module 40.

[0055] Please see Figure 1 and Figure 2 In an embodiment of the present invention, the optical module heat sink 10 further includes heat dissipation fins 4, which are disposed on the outer surface of the heat exchange shell 1.

[0056] Understandably, the arrangement of the heat dissipation fins 4 significantly increases the contact area between the optical module heat sink 10 and the outside air, thereby effectively improving heat dissipation efficiency. After the heat exchange medium completes the heat exchange with the optical module 40 within the heat exchange cavity 11, the heat-absorbing medium transfers the heat to the heat exchange shell 1, and the heat dissipation fins 4 on the outer surface of the heat exchange shell 1 further dissipate this heat rapidly to the surrounding environment. The number, shape, spacing, and height of the heat dissipation fins 4 can be optimized according to actual heat dissipation requirements. For example, increasing the number and height of the fins can increase the heat dissipation area, and a reasonable fin spacing helps to form good air convection between the fins, improving the heat dissipation effect. Through the synergistic effect of the heat dissipation fins 4, the heat generated by the optical module 40 during operation can be continuously and efficiently conducted and dissipated, ensuring that the optical module 40 always operates within a suitable temperature range, thereby maintaining its stable performance and long service life.

[0057] The heat dissipation fins 4 can be integrally formed with the heat exchange shell 1 by CNC (Computer Numerical Control) to improve structural strength and heat transfer efficiency, or they can be formed separately and assembled by pressing, welding or bolting to meet the needs of different production processes and cost control.

[0058] Please see Figures 1-4 The present invention also proposes an optical module assembly 100, which includes a substrate 20, an optical module heat sink 10, and a plurality of optical module cages 30. The specific structure of the optical module heat sink 10 is as described in the above embodiments. Since the optical module assembly 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Among them, the heat exchange shell 1 of the optical module heat sink 10 is disposed on the substrate 20, and the plurality of optical module cages 30 are disposed between the heat exchange shell 1 and the substrate 20. The top of the optical module cage 30 is provided with an opening 301 for the metal film 2 to contact the optical module 40.

[0059] It is understandable that when the heat exchange medium is injected into the heat exchange cavity 11, the metal film 2 can deform under the pressure of the medium, causing it to bulge downwards. When the optical module 40 is inserted into the optical module cage 30, the top of the optical module cage 30 has an opening 301, allowing the top of the optical module 40 to contact and press against the lower surface of the metal film 2. After the metal film 2 is deformed under pressure, it can adaptively conform to the top contour of the optical module 40, which is beneficial for the metal film 2 to fit tightly against the surface of the optical module 40. This reduces the contact thermal resistance between the metal film 2 and the optical module 40, significantly improving the thermal conductivity. The heat generated by the optical module 40 during operation can be quickly conducted to the heat exchange medium through the metal film 2 and then dissipated through the heat exchange shell 1, thereby achieving efficient heat dissipation of the optical module 40. The substrate 20 can be a PCB board.

[0060] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A heat sink for an optical module, characterized in that, include: The heat exchange shell has a heat exchange cavity inside for accommodating the heat exchange medium. The bottom of the heat exchange shell has a plurality of first communication ports that correspond one-to-one with a plurality of optical module cages of the optical module assembly. The first communication ports are connected to the heat exchange cavity. Multiple metal films, each of the multiple metal films corresponding to a multiple first communication port, with each metal film covering the corresponding first communication port; as well as, A pressure regulating device is used to adjust the pressure of the heat exchange medium.

2. The optical module heat sink as described in claim 1, characterized in that, The pressure regulating device includes a rubber elastic membrane, and the bottom of the heat exchange shell is provided with a second communication port connected to the heat exchange cavity. The rubber elastic membrane covers the second communication port, and the rubber elastic membrane can deform in the extension direction of the second communication port to adjust the medium pressure of the heat exchange medium.

3. The optical module heat sink as described in claim 1, characterized in that, The voltage regulating device includes: The heat exchange shell has a metal elastic membrane, and a second communication port connected to the heat exchange cavity is provided at the bottom. The metal elastic membrane covers the second communication port and can deform in the extension direction of the second communication port to adjust the medium pressure of the heat exchange medium. A pressure plate is disposed on the side of the metal elastic membrane opposite to the heat exchange shell; An adjusting bolt, comprising a connected rod and a head, the rod passing through the pressure plate and screwed to the heat exchange shell; and, A spring, which is clamped between the pressure plate and the head.

4. The optical module heat sink as described in claim 1, characterized in that, The voltage regulating device includes: A connecting pipe, both ends of which are connected to the heat exchange cavity; and A booster pump and a pressure relief valve are provided, both of which are located on the connecting pipe. The booster pump is used to increase the pressure of the heat exchange medium, and the pressure relief valve is used to decrease the pressure of the heat exchange medium.

5. The optical module heat sink as described in claim 1, characterized in that, The thickness of the metal film is δ, and δ satisfies the relationship: 0.01mm≤δ≤0.1mm.

6. The optical module heat sink as described in claim 1, characterized in that, The heat exchange shell is made of aluminum.

7. The optical module heat sink as described in claim 1, characterized in that, The metal film is made of one of stainless steel, nickel alloy, and titanium alloy.

8. The optical module heat sink as described in claim 1, characterized in that, The heat exchange chamber is provided with flow guide ribs to guide the flow of the heat exchange medium and to ensure that the pressure is evenly transmitted to each of the metal films.

9. The optical module heat sink as described in claim 1, characterized in that, The optical module heat sink also includes heat dissipation fins, which are disposed on the outer surface of the heat exchange shell.

10. An optical module assembly, characterized in that, include: substrate; An optical module heat sink, comprising the optical module heat sink as described in any one of claims 1 to 9, wherein the heat exchange shell of the optical module heat sink is disposed on the substrate; and... Multiple optical module cages are provided, each located between the heat exchange shell and the substrate. The top of each optical module cage has an opening for the metal thin film to contact the optical module.

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