Microchannel Heat Conductor Structure for Better Dissipation

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Solution Overview

Problem

Conventional heat conducting devices in electronic devices, such as notebook computers, have inadequate heat conduction efficiency, which hampers the improvement of heat dissipation performance.

Innovation Solution

A heat conducting device with a main body featuring an enclosable inner cavity and an uneven surface with height differences, including microchannels, to guide a medium for enhanced heat transfer, utilizing capillary forces to improve heat storage and flow efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional heat conducting devices are used, then the structure is simple, but the heat conduction efficiency is insufficient

Engineering Contradiction:
Improvestructure simplicityVSAvoidheat conduction efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The inner cavity surface is segmented into multiple parts with different heights, creating a stepped structure. This segmentation allows the heat conducting device to combine the advantages of both large-area heat storage (in lower regions) and efficient heat transfer (in higher regions with microchannels), thereby resolving the contradiction between structural simplicity and heat conduction efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the inner cavity surface are given different local qualities: lower parts have larger heat storage capacity while upper parts have enhanced heat transfer capability through microchannels. This local differentiation allows each region to optimize its function, improving overall heat conduction efficiency without significantly complicating the manufacturing process.

Inventive Principle:
Principle #3Local quality

2Productivity

If the inner cavity surface is made uneven with microchannels, then heat conduction efficiency is improved, but manufacturing complexity increases

Engineering Contradiction:
Improveheat conduction efficiencyVSAvoidsurface structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The invention introduces height difference as an additional dimension to the inner cavity surface structure. By creating a stepped surface with multiple height levels rather than relying solely on two-dimensional microchannel patterns, the design achieves enhanced heat conduction while maintaining manufacturing feasibility through a more straightforward three-dimensional form.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Significantly improves heat conduction by combining the fluidity of grooves with the heat storage capacity of capillary structures, resulting in more efficient heat dissipation in electronic devices.

Implementation Method 1

utilizing capillary forces to improve heat storage and flow efficiency

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

heat conducting device to transfer the heat generated inside the electronic device to the outside of the electronic device

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentUS20210310751A1Heat conductiing device
Publication Date: 2021.10.07 LENOVO (BEIJING) LTD
  • US20210310751A1 patent drawing
  • US20210310751A1 patent drawing
  • US20210310751A1 patent drawing

AI summary

The present disclosure provides a heat conducting device. The heat conducting device includes a main body, the main body including an enclosable inner cavity, the inner cavity being configured to receive a medium and accommodate the medium to carry heat to flow in the inner cavity. A surface enclosing the inner cavity is an uneven surface with a height difference, a plurality of parts of the uneven surface having the height difference, and the plurality of parts having the height difference including a plurality of microchannels for guiding the medium.