Vapor Chamber Support Column Layout for Lower Working-Medium Drag

Solution Overview

Problem

The increase in cross-sectional area of support columns in vapor chambers increases resistance to the flow of the gas working medium, affecting the efficiency of gas and liquid circulation and the heat dissipation effect.

Innovation Solution

The vapor chamber design includes support columns with a cross section that is longer in the direction from the evaporation end to the condensation end, featuring airfoil-shaped or tapered designs, and staggered arrangements to guide the gas working medium, reducing flow resistance and enhancing circulation efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the cross-sectional area of the support column is increased to enhance strength, then the strength of the vapor chamber is improved, but the resistance to the flow of the gas working medium increases

Engineering Contradiction:

Improvestrength of the vapor chamberVSAvoidresistance to the flow of the gas working medium

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The support column has different cross-sectional areas at different locations: a first cross-sectional area at the evaporation end and a second cross-sectional area at the condensation end. The first cross-sectional area is larger than the second cross-sectional area, creating local variations in geometry to optimize both strength and flow characteristics

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The support column features asymmetric cross-sectional dimensions where the first cross-sectional area differs from the second cross-sectional area. This asymmetric design allows the support column to provide adequate strength while reducing flow resistance in the condensation region

Inventive Principle:

Principle #4Asymmetry

2Strength

If the cross-sectional area of the support column is increased to enhance strength, then the strength of the vapor chamber is improved, but the efficiency of gas and liquid circulation is reduced

Engineering Contradiction:

Improvestrength of the vapor chamberVSAvoidefficiency of gas and liquid circulation

Core Design Contradiction:

StrengthVSProductivity

Solution Approach 1:

The support column has different cross-sectional areas at different locations: a first cross-sectional area at the evaporation end and a second cross-sectional area at the condensation end. The first cross-sectional area is larger than the second cross-sectional area, creating local variations in geometry to optimize both strength and flow characteristics

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The support column transitions from a larger cross-section at the evaporation end to a smaller cross-section at the condensation end, utilizing dimensional variation along the length of the support column to balance structural requirements with flow efficiency

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Strength

If the cross-sectional area of the support column is increased to enhance strength, then the strength of the vapor chamber is improved, but the heat dissipation effect is reduced

Engineering Contradiction:

Improvestrength of the vapor chamberVSAvoidheat dissipation effect

Core Design Contradiction:

StrengthVSTemperature

Solution Approach 1:

The support column has different cross-sectional areas at different locations: a first cross-sectional area at the evaporation end and a second cross-sectional area at the condensation end. The first cross-sectional area is larger than the second cross-sectional area, creating local variations in geometry to optimize both strength and flow characteristics

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The vapor chamber utilizes phase transition of the working medium (evaporation at the evaporation end and condensation at the condensation end) to achieve heat dissipation, and the support column geometry is optimized to facilitate this phase change process

Inventive Principle:

Principle #36Phase transitions

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

This design reduces flow resistance, improves gas and liquid circulation efficiency, and enhances heat dissipation by ensuring even distribution and increased heat exchange at the condensation end.

Implementation Method 1

a cross section of at least part of the support columns is configured to be in a shape that is longer in a first direction than in a second direction... so that a gas working medium flowing from the evaporation end to the condensation end can be guided

Methodology Applied

Scientific EffectFlow guidance:

Implementation Method 2

a position on the first housing close to a heat source is an evaporation end

Methodology Applied

Scientific EffectEvaporation: Evaporation

Implementation Method 3

a position on the first housing away from the heat source is a condensation end

Methodology Applied

Scientific EffectCondensation: Condensation

Implementation Method 4

a capillary structure located on the second housing

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS20260002737A1Vapor chamber and electronic device

Publication Date: 2026.01.01 HONOR DEVICE CO LTD

AI summary

A vapor chamber and an electronic device. The vapor chamber includes: a first housing and a second housing, where the first housing is sealingly connected to the second housing, and an accommodating cavity is formed between the first housing and the second housing; and support columns, a position on the first housing close to a heat source is an evaporation end, a position on the first housing away from the heat source is a condensation end, and a length of a cross section of at least part of the support columns is greater in a first direction than in a second direction, The cross section of the at least part of the support columns is configured to be in a shape that is longer in the direction from the evaporation end to the condensation end.