Dual-Chamber Portable Blower Impeller Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current portable air moving systems, such as Powered Air Purifying Respirators (PAPRs) and ambient air cooling systems, face challenges in achieving efficient airflow and battery longevity in compact, lightweight designs, particularly in applications requiring continuous air supply and heat removal.
Innovation Solution
A portable blower system with a housing featuring two air flow chambers and a rotatable impeller with separate blades on each side of the base wall, ensuring non-fluidic communication between the chambers, which enhances airflow efficiency and battery performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a compact, lightweight design is used for portable air moving systems, then portability and wearability are improved, but airflow efficiency and battery longevity deteriorate
Solution Approach 1:
The housing is divided into two separate air flow chambers (first and second chambers) that are non-fluidically communicated, allowing independent optimization of airflow paths while maintaining a compact overall structure. This segmentation enables efficient airflow management without increasing system weight.
Solution Approach 2:
The impeller is positioned between the two chambers with blades extending on both sides of the base wall, utilizing three-dimensional space efficiently. This spatial arrangement allows the impeller to service both chambers simultaneously without increasing the footprint or weight of the system.
2Weight of moving object
If a compact, lightweight design is used for portable air moving systems, then portability and wearability are improved, but battery longevity deteriorates
Solution Approach 1:
Dividing the air flow path into two separate chambers allows for optimized airflow patterns that reduce turbulence and energy loss. The non-fluidic communication between chambers prevents short-circuiting of airflow, ensuring that the blower operates more efficiently and consumes less battery power over extended periods.
Solution Approach 2:
The impeller design with blades on both sides of the base wall creates balanced airflow forces that reduce motor load and energy consumption. This geometric parameter optimization enables the system to maintain required airflow performance while extending battery operational duration.
3Productivity
If airflow efficiency is increased in portable systems, then cooling and respiratory performance are improved, but device complexity increases
Solution Approach 1:
The dual-chamber design is integrated into a single housing structure with the impeller serving both chambers simultaneously. This merging approach achieves complex airflow patterns required for high efficiency while maintaining a simple, unified device architecture that does not significantly increase overall complexity.
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 system provides efficient airflow and extended battery life, addressing the need for compact, lightweight designs in applications like PAPRs and ambient air cooling systems, while maintaining performance in delivering clean air and cooling.
Implementation Method 1
An impeller is rotatably disposed between the two air flow chambers and includes a base wall that places the two air flow chambers in non-fluidic communication when the impeller is rotated
Data Source
AI summary
A portable cooling or respiratory blower system of the type carried by a user's body includes a housing having two air flow chambers. An impeller is rotatably disposed between the two air flow chambers and includes a base wall that places the two air flow chambers in non-fluidic communication when the impeller is rotated. A separate plurality of blades is provided on each side of the base wall.