Monolithic brazed light module water-cooled plate heat sink

Abstract

The utility model provides an integral brazing light module water cooling plate radiator, include: the front water chamber, the front water chamber is equipped with at least one cooling liquid inlet and outlet pipeline connecting hole, the rear water chamber, a plurality of water cooling plates, a plurality of water cooling plates are arranged in parallel arrangement, a plurality of bellows, the bellows are arranged respectively in the front and back both ends of each water cooling plate for connecting every water cooling plate to the front water chamber and the rear water chamber respectively, the front water chamber and the rear water chamber are communicated with a plurality of water cooling plates in structure, make cooling liquid flow through every water cooling plate in turn, form continuous cooling liquid passage, the front water chamber, the rear water chamber, a plurality of bellows and a plurality of water cooling plates are formed integral connection structure through brazing, guarantee each water cooling plate has the deformability and the elastic displacement ability in vertical direction. Through bellows connection water cooling plate and front and rear water chamber, give the cold plate certain vertical floating capacity, can in the process of light module plug -in self -adaptation displacement, be convenient for light module plug -in, avoid structural interference.

Description

Technical Field

[0001] This utility model relates to the field of thermal management technology for electronic devices, and more specifically to an integrated brazed optical module water-cooled plate radiator. Background Technology

[0002] With the development of high-speed communication technology, optical modules, as core transmission components, are experiencing increasingly higher power densities, placing higher demands on the performance of heat dissipation systems. Currently, common optical module heat sinks on the market mainly employ air cooling or clamp-on water cooling structures, but these still have certain limitations. On the one hand, air cooling structures rely on airflow to remove heat, resulting in low heat dissipation efficiency and difficulty meeting the thermal management requirements of high-power optical modules. Especially in dense deployments or high-temperature environments, the system is prone to overheating and frequency throttling, severely affecting equipment stability and lifespan. On the other hand, while clamp-on water cooling plates have some heat dissipation capacity, their installation methods typically involve lateral clamping or screw fixing, leading to complex structures and hindering module insertion and removal, especially inefficient during maintenance, expansion, or module replacement. Furthermore, existing water cooling structures often employ segmented welding, posing a potential risk of coolant leakage and reducing the overall sealing and reliability of the product. Therefore, there is an urgent need for an optical module heat dissipation device that combines high heat dissipation efficiency, structural reliability, and ease of installation to meet the application requirements of high-speed, high-density communication equipment. Utility Model Content

[0003] In view of this, the present invention provides an integrated brazed optical module water-cooled plate radiator.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An integrated brazed optical module water-cooled plate radiator includes: a front water chamber with at least one coolant inlet / outlet pipe connection hole; a rear water chamber; multiple water-cooled plates arranged side-by-side; and multiple corrugated pipes located at the front and rear ends of each water-cooled plate to connect each water-cooled plate to the front and rear water chambers respectively. The front and rear water chambers are structurally connected to the multiple water-cooled plates, allowing coolant to flow sequentially through each water-cooled plate to form a continuous coolant path. The front water chamber, rear water chamber, multiple corrugated pipes, and multiple water-cooled plates are brazed to form an integral connection structure, ensuring that each water-cooled plate has deformability and elastic displacement capability in the vertical direction.

[0006] In a preferred embodiment, the corrugated pipe is made of stainless steel or copper and has an elastic structure, allowing each water-cooled plate to move relatively independently and elastically in the vertical direction.

[0007] In the preferred embodiment, the number of corrugated pipes is sufficient to connect all water-cooled plates to the front and rear water chambers, ensuring the deformability and displacement capability of the water-cooled plates as a whole and individual plates.

[0008] In a preferred embodiment, the front water chamber is provided with coolant inlet and outlet pipe connection holes to realize the circulation of coolant.

[0009] In the preferred embodiment, the plurality of water-cooled plates are tightly bonded to the surface of the optical module to achieve efficient heat conduction.

[0010] In a preferred embodiment, the corrugated pipe structure provides elastic buffering to adapt to the relative changes in the position of the water-cooled plate during the insertion and removal of the optical module.

[0011] In the preferred technical solution, the overall structure is suitable for liquid cooling of high-speed communication optical modules, and is especially suitable for high power density and multi-module combinations.

[0012] In the preferred technical solution, the front water chamber, the rear water chamber, multiple corrugated pipes, and multiple water-cooling plates are all formed into an integral structure through brazing, ensuring that there are no leakage points in the internal cooling channels and improving structural safety and durability.

[0013] As can be seen from the above technical solution, compared with the prior art, the present invention has the following beneficial technical effects:

[0014] The water-cooled plate is connected to the front and rear water chambers via corrugated pipes, giving the plate a certain degree of vertical floating capability. This allows for adaptive displacement during optical module insertion and removal, avoiding structural interference and significantly improving module loading and unloading efficiency and system maintainability. All water-cooled components are integrally connected via vacuum brazing in a single step, eliminating the need for subsequent segmented assembly. This prevents coolant leakage due to poor welds or loose interfaces, ensuring the system's sealing reliability and long-term operational stability. The number and layout of the water-cooled plates can be flexibly adjusted according to the optical module configuration, providing excellent scalability and customization capabilities to adapt to the heat dissipation needs and installation space limitations of different devices. The use of water-cooled plates forming parallel or series cooling channels, combined with liquid cooling, offers higher heat exchange efficiency compared to air cooling, making it suitable for efficient heat dissipation of high-power-density optical modules and other heat-generating devices. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is an exploded structural diagram of the present invention.

[0018] Reference numerals: 1. Front water chamber; 2. Corrugated pipe; 3. Water-cooled plate; 4. Rear water chamber; 11. Coolant inlet and outlet pipe connection holes. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0020] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used 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, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] For integrated brazed optical module water-cooled plate radiator, please refer to [link / reference]. Figure 1 , Figure 2 The heat sink described in this embodiment includes: a front water chamber 1, a rear water chamber 4, multiple water-cooled plates 3, and multiple corrugated pipes 2. The multiple water-cooled plates 3 are arranged side-by-side and connected to the front water chamber 1 and the rear water chamber 4 respectively via corrugated pipes 2, forming an integrally connected coolant flow path. This structure, through efficient heat exchange and reliable sealing design, meets the heat dissipation requirements of high-power electronic devices such as high-speed optical modules. The water-cooled plates 3 are made of high-quality copper material, such as T2 copper or TU1 oxygen-free copper, possessing excellent thermal conductivity. Each water-cooled plate 3 has a rectangular flat structure, with its bottom surface designed for direct contact with the high-speed optical module to achieve efficient heat exchange. The surface of the water-cooled plates 3 is nickel-plated for anti-oxidation treatment, extending its service life, and is provided with positioning grooves or screw holes for fixing, ensuring installation stability. The dimensions of the water-cooled plates 3 are customized according to the actual dimensions of the optical module to ensure good fit and heat dissipation effect.

[0023] Furthermore, the interior of the water-cooled plate 3 is precision-machined using CNC to create multiple vertically arranged strip-shaped cooling channels. These channels are arranged in parallel or series flow structures. The coolant enters from the front water chamber 1 through the corrugated pipe 2, passes through the channels of multiple water-cooled plates 3, and then flows into the rear water chamber 4, thus completing the liquid flow and heat exchange process. The cooling channels of each water-cooled plate 3 are independent yet connected to the front and rear water chambers, improving cooling efficiency while facilitating localized maintenance and replacement. Each water-cooled plate 3 has a section of corrugated pipe 2 connected to both ends. The corrugated pipe 2 is made of stainless steel (such as SUS304 or SUS316L) or copper, possessing good elasticity and flexibility. One end of the corrugated pipe 2 is welded to the water-cooled plate 3, and the other end is welded to either the front water chamber 1 or the rear water chamber 4, respectively, achieving mechanical connection and continuity of the cooling channels. The corrugated pipe 2, as an elastic connector, allows the water-cooled plate 3 to float slightly in the vertical direction (e.g., ±1 to 2 mm), which facilitates the insertion and removal of the optical module and buffers thermal expansion and contraction and equipment assembly errors to a certain extent, avoiding stress concentration that could lead to structural damage.

[0024] Furthermore, the bellows 2 is manufactured using hydroforming or roll forming processes and connected to the water-cooling plate 3, the front water chamber 1, and the rear water chamber 4 via vacuum brazing. The brazing filler metal can be copper-based (such as the BCuP series) or silver-copper alloy (such as BAG-7). The brazing temperature is controlled within the range of 720℃ to 780℃, and the brazing process is completed under a nitrogen or hydrogen protective atmosphere to ensure welding strength and sealing. All components are brazed in one continuous process, avoiding the leakage risk associated with segmented welding and improving the overall sealing and mechanical strength of the product. The front water chamber 1 and the rear water chamber 4 are generally made of copper or stainless steel and have a hollow, elongated structure. The front water chamber 1 has inlet and outlet pipe connection holes 11, which connect to the inlet and outlet pipes of the liquid cooling system, respectively. The interior of the water chamber has a distribution cavity structure to ensure that the coolant is evenly distributed to each water-cooling plate channel, improving heat exchange uniformity and system stability.

[0025] Furthermore, the coolant can be deionized water, ethylene glycol solution, or fluorinated liquid (such as the 3M Novec series), with its flow rate generally controlled between 1.0 L / min and 2.0 L / min, and the system pressure not exceeding 0.3 MPa. Through the coordinated regulation of the temperature controller and pump, precise control of the coolant flow rate and temperature is achieved to adapt to the dynamic changes in heat generation of the high-speed optical module, ensuring effective heat dissipation and equipment safety.

[0026] This structure has a wide range of applications, suitable not only for high-speed optical modules but also for various high-power electronic devices such as lasers, power modules, and GPU boards. The number and arrangement of the water-cooled plates 3 can be adjusted according to actual needs, and the length and interface structure of the corrugated pipes 2 can be customized to achieve flexible installation and expansion.

[0027] Furthermore, during assembly, the bellows 2 is first welded to both ends of the corresponding water-cooled plate 3, and then sequentially welded to the front water chamber 1 and the rear water chamber 4. The entire assembly process is completed in a vacuum brazing furnace in one go, forming a leak-free integrated structure. After welding, an airtightness test (e.g., holding at 0.3 MPa for 30 minutes) and a flow test are performed to ensure that the coolant channels are unobstructed. In this embodiment, the water-cooled plate 3 can also be attached to the top or side of the optical module housing using thermal grease or thermal pads, and a clamping force can be applied by springs or frames to further improve heat conduction efficiency. This design effectively solves the stress concentration and leakage problems caused by thermal expansion and contraction in traditional rigid heat dissipation structures, improving the stability and service life of the system. In summary, this utility model provides a compact, reliable, efficient, and flexible liquid cooling system that is suitable for the heat dissipation needs of current high-speed and high-power electronic devices and has strong application value.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated brazed optical module water-cooled plate radiator, characterized in that, include: The front water chamber (1) is provided with at least one coolant inlet / outlet pipe connection hole (11); the rear water chamber (4); Multiple water-cooled plates (3) are arranged side by side; Multiple corrugated pipes (2) are respectively disposed at the front and rear ends of each water-cooled plate (3) to connect each water-cooled plate (3) to the front water chamber (1) and the rear water chamber (4) respectively; The front water chamber (1) and the rear water chamber (4) are structurally connected to multiple water-cooled plates (3), so that the coolant flows through each water-cooled plate (3) in sequence to form a continuous coolant passage. The front water chamber (1), rear water chamber (4), multiple corrugated pipes (2) and multiple water-cooled plates (3) are brazed to form an integral connection structure, ensuring that each water-cooled plate (3) has the ability to deform and elastic displacement in the vertical direction.

2. The integrated brazed optical module water-cooled plate radiator according to claim 1, characterized in that: The corrugated pipe (2) is made of stainless steel or copper and has an elastic structure that allows each water-cooled plate (3) to move relatively independently in the vertical direction.

3. The integrated brazed optical module water-cooled plate radiator according to claim 1, characterized in that: The number of corrugated pipes (2) is sufficient to connect all water-cooled plates (3) to the front water chamber (1) and the rear water chamber (4), ensuring the deformability and displacement capability of the water-cooled plate (3) as a whole and individual plates.

4. The integrated brazed optical module water-cooled plate radiator according to claim 1, characterized in that: The front water chamber (1) is provided with coolant inlet and outlet pipe connection holes (11) to realize the circulation of coolant.

5. The integrated brazed optical module water-cooled plate radiator according to claim 1, characterized in that: The multiple water-cooled plates (3) are closely attached to the surface of the optical module to achieve efficient heat conduction.

6. The integrated brazed optical module water-cooled plate radiator according to claim 1, characterized in that: The corrugated tube (2) structure provides elastic buffering to adapt to the relative changes in the position of the water-cooled plate (3) during the insertion and removal of the optical module.

7. The integrated brazed optical module water-cooled plate radiator according to claim 1, characterized in that: The overall structure is suitable for liquid cooling of high-speed communication optical modules, and is especially suitable for high power density and multi-module combinations.

8. The integrated brazed optical module water-cooled plate radiator according to claim 1, characterized in that: The front water chamber (1), rear water chamber (4), multiple corrugated pipes (2) and multiple water-cooled plates (3) are all integrated into a single structure through brazing process, ensuring that there are no leakage points in the internal cooling channel and improving structural safety and durability.

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