Fan Frame Bypass Structure for Airflow Enhancement

Solution Overview

Problem

Conventional fans in miniaturized electronic apparatuses face limitations in heat dissipation due to restricted size and increased power consumption, leading to inadequate cooling performance.

Innovation Solution

The fan frame body incorporates a bypass structure with interconnected flow ways and a bypass flow way on its circumference, enhancing air volume without increasing size or power consumption, allowing for improved airflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the size of the fan is enlarged to increase air volume, then the heat dissipation ability is improved, but the electronic apparatus size increases and power consumption increases

Engineering Contradiction:

Improveheat dissipation abilityVSAvoidfan size

Core Design Contradiction:

ProductivityVSVolume of moving object

Solution Approach 1:

The flow way is divided into a main flow way and a bypass flow way, creating separate airflow paths. The bypass flow way branches off from the main flow way and merges back, allowing air to take alternative paths around the fan blades. This segmentation enables increased air volume without proportionally increasing fan size, as the bypass path utilizes the annular space between the fan frame body and the main flow way.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bypass flow way is arranged in an annular region between the fan frame body and the main flow way, utilizing the radial dimension and the annular space. This dimensional arrangement allows the bypass flow to coexist with the main flow without significantly increasing the overall fan diameter, effectively using the available space in a different dimensional configuration to increase total air volume.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Productivity

If the operation speed of the fan is increased to improve heat dissipation, then the heat dissipation ability is improved, but the power consumption increases

Engineering Contradiction:

Improveheat dissipation abilityVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The flow way is divided into a main flow way and a bypass flow way, creating separate airflow paths. The bypass flow way branches off from the main flow way and merges back, allowing air to take alternative paths around the fan blades. This segmentation enables increased air volume without proportionally increasing fan size, as the bypass path utilizes the annular space between the fan frame body and the main flow way.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bypass flow way is arranged in an annular region between the fan frame body and the main flow way, utilizing the radial dimension and the annular space. This dimensional arrangement allows the bypass flow to coexist with the main flow without significantly increasing the overall fan diameter, effectively using the available space in a different dimensional configuration to increase total air volume.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Volume of moving object

If the size of the electronic apparatus is miniaturized, then the portability is improved, but the heat dissipation problem worsens

Engineering Contradiction:

Improveelectronic apparatus sizeVSAvoidheat dissipation ability

Core Design Contradiction:

Volume of moving objectVSProductivity

Solution Approach 1:

The bypass flow way is nested within the annular region between the fan frame body and the main flow way, utilizing the existing space without requiring additional external volume. The bypass structure is embedded in the radial space that already exists in conventional fan designs, allowing the system to maintain compact dimensions while increasing heat dissipation capability through improved airflow utilization of the available space.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS10415570B2Fan frame body with bypass structure and fan thereof

Publication Date: 2019.09.17 ASIA VITAL COMPONENTS CO LTD

AI summary

A fan frame body with bypass structure and a fan thereof. The fan includes a first fan, a second fan and a bypass structure. The second fan has a second frame body correspondingly serially connected with a first frame body of the first fan, whereby a first flow way of the first frame body communicates with a second flow way of the second frame body. The bypass structure is disposed in the first flow way or the second flow way. The bypass structure defines a bypass flow way on a circumference of the first flow way or the second flow way. By means of the bypass structure, without increasing the size of the fan and without increasing the consumed power of the fan, the air volume of the fan can be enhanced.