Blower Motor Air Directing Surface for Energy Efficiency
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Solution Overview
Problem
Conventional blower assemblies lack efficiency in energy consumption due to the absence of air directing surfaces, which can enhance airflow and pressure while reducing energy requirements.
Innovation Solution
Incorporating an air directing surface within the motor assembly of a blower assembly, configured to direct air radially outwardly, coupled with a centrifugal fan, reduces energy consumption by at least 5% compared to blower assemblies without such surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an air directing surface is added to the motor assembly, then energy efficiency is improved and energy consumption is reduced, but device complexity increases
Solution Approach 1:
The air directing surface is integrated into the motor assembly housing, combining the motor and air directing functions into a single unified structure. This eliminates the need for separate air directing components while maintaining the energy efficiency benefits, thereby reducing device complexity.
Solution Approach 2:
The motor assembly housing serves multiple functions: it encloses the motor components and simultaneously acts as an air directing surface that guides airflow radially outwardly toward the impeller blades. This multi-functionality reduces the number of separate components needed in the system.
2Productivity
If an air directing surface is incorporated into the motor assembly, then airflow and pressure are enhanced, but device complexity increases
Solution Approach 1:
The air directing surface is merged with the motor assembly housing structure, creating a unified component that delivers enhanced airflow performance without requiring additional separate air directing parts.
Solution Approach 2:
The housing structure performs dual functions as both a mechanical enclosure for the motor and as an aerodynamic surface that directs airflow efficiently toward the impeller, enhancing productivity without adding component complexity.
3Use of energy by moving object
If an air directing surface is added to direct air radially outwardly, then energy efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The air directing surface is formed as an integral part of the motor assembly housing, allowing it to be manufactured as a single piece or pre-assembled unit, thereby reducing manufacturing complexity despite the sophisticated aerodynamic geometry required for energy efficiency.
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 air directing surface in the blower assembly enhances airflow and pressure while minimizing energy requirements, demonstrating improved efficiency over conventional designs.
Implementation Method 1
The air directing surface is shaped and configured to direct air drawn into the air inlet radially outwardly toward the impeller blades
Implementation Method 2
A blower assembly of the present invention includes a centrifugal fan
Data Source
AI summary
A blower assembly includes a centrifugal fan and a motor assembly. The centrifugal fan has a plurality of axially extending impeller blades, a first axial end, and an air inlet. The air inlet is at the first axial end of the centrifugal fan. The motor assembly comprises a stator, a rotor, and an air directing surface. The air directing surface is shaped and configured to direct air drawn into the air inlet radially outwardly toward the impeller blades. The air directing surface extends generally along the rotor axis from its first end to its second end. At least a surface region of the air directing surface generally circumscribes the rotor axis and diverges radially outwardly as such surface region of the air directing surface extends away from the first end toward the second end.