Heat Dissipation Unit With Segmented Flow Channels
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Solution Overview
Problem
Conventional heat dissipation devices have low efficiency and large volume due to reduced heat dissipation efficiency of radiation fins with increased height, which is not effectively addressed by existing technologies.
Innovation Solution
A heat dissipation unit with radiation fins formed by closing plate members to create independent flow channels filled with working fluid, enabling liquid-vapor circulation and enhanced heat transfer through wick structures, which reduces volume and improves efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the height of radiation fins is increased to provide more heat dissipation area, then the heat dissipation area is improved, but the heat dissipation efficiency is reduced
Solution Approach 1:
The radiation fin is segmented into multiple independent flow channels by partition walls, allowing the working fluid to flow through separate paths. This segmentation enables each channel to independently perform heat absorption and dissipation, improving overall heat dissipation efficiency while maintaining a compact structure without requiring excessive fin height
Solution Approach 2:
The invention introduces a working fluid (liquid or gas) that circulates through the independent flow channels within the radiation fin. The fluid absorbs heat from the heat source through the base and dissipates it along the fin channels, enabling efficient heat transfer without relying solely on increased fin height, thus resolving the contradiction between area and efficiency
2Productivity
If the height of radiation fins is increased to dissipate heat more quickly, then the heat dissipation rate is improved, but the volume of the heat dissipation device is increased
Solution Approach 1:
The independent flow channels are nested within the radiation fin structure, with partition walls creating internal channels inside the fin body. This nesting allows the heat dissipation functionality to be integrated within a compact volume, achieving high heat dissipation rate without increasing the external dimensions of the device
Solution Approach 2:
Instead of increasing heat dissipation rate by extending in the vertical dimension (fin height), the invention creates multiple flow paths within the horizontal plane through partition walls. This dimensional shift allows efficient heat dissipation to be achieved through increased surface area utilization rather than increased height, reducing device volume
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly increases heat dissipation efficiency while reducing the overall volume of the heat dissipation device, overcoming the limitations of conventional designs.
Implementation Method 1
heat produced by the heat source is absorbed by the base and transferred from the second side to the first side of the base and then to the radiation fins
Implementation Method 2
When the working fluid is heated and vaporized in the independent flow channels, heat is quickly carried by the vapor-phase working fluid
Implementation Method 3
At the farther ends of the independent flow channels, the vapor-phase working fluid is condensed to a liquid
Implementation Method 4
With the aid of at least one wick structure provided on the inner wall surfaces of the independent flow channels, the liquid-phase working fluid flows back to the ends of the independent flow channels that are closer to the heat source
Implementation Method 5
heat transferred to the radiation fins is then absorbed by the working fluid in the independent flow channels
Data Source
AI summary
A heat dissipation unit and a heat dissipation device using same are disclosed. The heat dissipation device includes a base and one or more heat dissipation units. The base has a first side and an opposite second side; and the heat dissipation units respectively include at least one radiation fin correspondingly provided on the first side of the base. The radiation fin is formed by correspondingly closing a first plate member and a second plate member to each other, such that a plurality of independent flow channels is defined between the closed first and second plate member. And, the independent flow channels respectively have an amount of working fluid filled therein.