Multi-partition two-phase composite heat dissipation module
By designing a multi-zone two-phase composite heat dissipation module, using the working fluid circulation network and condensation zone, the problem of insufficient thermal conductivity of traditional fin radiators is solved, and a fast and effective heat dissipation effect is achieved.
Patent Information
- Application Number
- CN202420703146.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-08
AI Technical Summary
Traditional fin radiators cannot effectively dissipate heat due to their thermal conductivity limited by materials, resulting in local overheating, especially when the contact area between high-thermal electronic components and the radiator is limited.
Design a multi-zone two-phase composite heat dissipation module, including a cavity lower plate, a cavity cover plate and a plurality of spaced fins, the lower end of the fin extends into the working fluid flow channel and the working fluid flow network in the cavity cover plate The road is connected, filled with two phases of heat transfer working fluid, and the heat dissipation efficiency is improved through the working fluid condensation zone and fixing device.
It realizes rapid and efficient control of the heat source temperature in each area, solving the problems of slow heat dissipation and excessive heat flow density of traditional radiators.
Smart Images
Figure CN222302257U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of heat dissipation units, in particular to a multi-partition two-phase composite heat dissipation module. Background Art
[0002] At present, as electronic equipment develops towards high performance and high integration, the requirements for heat dissipation are getting higher and higher. The traditional fin heat sink is mainly composed of a substrate and multiple fins arranged on the substrate. The heat-generating electronic components transfer the heat to the substrate and then dissipate it through the thin plate-shaped fins to increase the contact area between the heat sink and the air. However, this type of heat sink has great limitations. The heat is transferred from the substrate to the fins and then dissipated. The thermal conductivity of both the substrate and the fins is limited by the material. The thermal conductivity of each part of the heat sink is also almost the same. The contact area between some high-heat electronic components and the heat sink substrate is limited, and it cannot achieve a good heat dissipation effect, which is prone to local overheating. Summary of the invention
[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a multi-partition two-phase composite heat dissipation module, which has a simple structure, realizes multi-partition heat dissipation, and solves the problems of rapid heat dissipation and high heat flux density.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A multi-partitioned two-phase composite heat dissipation module, characterized in that it includes a cavity lower plate, a cavity cover plate, and fins, wherein the cavity cover plate and the cavity lower plate are relatively snap-fitted and connected, a working fluid flow network is provided between the cavity cover plate and the cavity lower plate, the number of the fins is multiple, and they are arranged at intervals on the top surface of the cover plate, the lower end of the fin has a plurality of working fluid flow channels extending into the cavity cover plate, the working fluid flow channels are connected to the working fluid flow network, and the working fluid flow network is filled with a two-phase heat transfer working fluid.
[0006] Furthermore, a fin fixing device is provided at the top of the fin, and the fixing device includes a grille plate and a fin fixing rod. The fin fixing rod is arranged at the bottom of the grille plate, and the lower part of the fin fixing rod has a plurality of slots for limiting the fins. The tops of the fins at both ends have limiting teeth inserted into the grille plate.
[0007] Furthermore, the fin has a plurality of working fluid condensation areas, and the working fluid condensation areas are connected to the working fluid flow channel through a network.
[0008] Furthermore, a liquid injection pipe is provided on the cavity cover plate, the lower end of the liquid injection pipe is connected to the working medium flow network, and the upper end of the liquid injection pipe is welded and sealed after the liquid injection is completed.
[0009] The beneficial effects of the utility model include: the structure can distribute heat to different areas through the pipeline via the heat transfer medium, can quickly and effectively control the heat source temperature of each area, and solve the problems of slow heat dissipation and excessively high heat flux density in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the explosion structure of the utility model;
[0011] Figure 2 It is a schematic diagram of the internal structure of the fin in the utility model. DETAILED DESCRIPTION
[0012] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
[0013] A kind of Figure 1-2 The multi-partitioned two-phase composite heat dissipation module shown includes a cavity lower plate 1, a cavity cover plate 2, and fins 3, wherein the cavity cover plate 2 and the cavity lower plate 1 are relatively buckled and connected, and the bottom surface of the cavity lower plate 1 is the heat source contact surface. There is a working fluid flow network between the cavity cover plate 2 and the cavity lower plate 1. There are multiple fins 3, and they are arranged on the top surface of the cover plate 2 at intervals along the thickness direction of the fins 3. The lower end of the fin 3 has multiple working fluid flow channels 4 extending into the cavity cover plate 2, and the working fluid flow channels 4 are connected to the working fluid flow network, and the working fluid flow network is filled with two-phase heat transfer working fluid.
[0014] In order to further ensure the stability of the fin 3, a fin fixing device is provided at the top of the fin 3 in the present embodiment. The fixing device includes a grille plate 6 and a fin fixing rod 5. The fin fixing rod 5 is provided at the bottom of the grille plate 6. The lower part of the fin fixing rod 5 has a plurality of slots for limiting the fin 3. The tops of the fins 3 at both ends have limiting teeth 7 inserted into the grille plate 6.
[0015] In order to increase the heat dissipation effect and heat dissipation rate of the fin 3, a plurality of working fluid condensation areas 8 are provided in the fin 3, and the working fluid condensation areas 8 have different areas according to different heat dissipation requirements. The working fluid condensation areas 8 are connected to the working fluid flow channel 4 through a network, so that the working fluid circulates between the fin 3 and the cavity lower plate 1, and the working fluid with a low boiling point can quickly take away heat by changing from liquid phase to gas phase.
[0016] In this embodiment, a liquid injection pipe 9 is provided on the cavity cover plate 2, and the lower end of the liquid injection pipe 9 is connected to the working medium flow network for injecting low boiling point two-phase working medium into the working medium flow network. The upper end of the liquid injection pipe 9 is welded and sealed after liquid injection.
[0017] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.
Claims
1. A multi-partition two-phase composite heat dissipation module, characterized in that: The invention comprises a cavity lower plate (1), a cavity cover plate (2), and fins (3), wherein the cavity cover plate (2) and the cavity lower plate (1) are relatively snap-fitted and connected, a working fluid flow network is provided between the cavity cover plate (2) and the cavity lower plate (1), a plurality of fins (3) are provided, and the fins (3) are arranged at intervals on the top surface of the cover plate (2), and the lower ends of the fins (3) are provided with a plurality of working fluid flow channels (4) extending into the cavity cover plate (2), the working fluid flow channels (4) are connected to the working fluid flow network, and the working fluid flow network is filled with a two-phase heat transfer working fluid.
2. A multi-partition two-phase composite heat dissipation module according to claim 1, characterized in that: A fin fixing device is arranged at the top of the fin (3), and the fixing device comprises a grid plate (6) and a fin fixing rod (5). The fin fixing rod (5) is arranged at the bottom of the grid plate (6), and the lower part of the fin fixing rod (5) has a plurality of slots for limiting the fin (3), and the tops of the fins (3) at both ends have limiting teeth (7) inserted into the grid plate (6).
3. The multi-partition two-phase composite heat dissipation module according to claim 1, characterized in that: The fin (3) has a plurality of working medium condensation areas (8), and the working medium condensation areas (8) are connected to the working medium flow channel (4) through a network.
4. The multi-partition two-phase composite heat dissipation module according to claim 1, characterized in that: The cavity cover plate (2) is provided with a liquid injection pipe (9), the lower end of the liquid injection pipe (9) is connected to the working medium flow network, and the upper end of the liquid injection pipe (9) is welded and sealed after liquid injection is completed.