Flow-Directing Motor Mount for HVAC Airflow Efficiency
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Solution Overview
Problem
Current motor mounts for HVAC devices lack sufficient support, leading to harmonic resonant vibrations and airflow resistance, which can damage equipment and reduce HVAC efficiency.
Innovation Solution
A flow-directing motor mount with a base and supports featuring a folded leading edge and flow directors that optimize air flow and stabilize the motor, minimizing vibrations while directing air flow effectively through HVAC devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If standardized motor mounts are used to fit NEMA-sized motor frame bases, then the motor mount can be easily manufactured and installed, but the position of the fan relative to the motor is limited and manufacturing time and costs increase
Solution Approach 1:
The motor mount uses adjustable parameters including different mounting hole patterns, varying support leg lengths, and configurable bracket positions to accommodate different fan positions and motor sizes while maintaining standardized manufacturing processes
Solution Approach 2:
The motor mount is divided into separate modular components including the base plate, support legs, and mounting brackets that can be independently manufactured and assembled, providing flexibility in configuration while simplifying manufacturing of each individual part
2Device complexity
If motor mounts lack substantial supports or coupling structures, then the device complexity is reduced, but harmonic resonant vibrations occur between the motor and HVAC device
Solution Approach 1:
The motor mount concentrates substantial support structures at critical locations including reinforced mounting points, strategically positioned support legs, and localized coupling brackets, while keeping other areas minimal to maintain low overall complexity
Solution Approach 2:
The motor mount incorporates pre-configured vibration damping features and rigid coupling structures built into the design from the beginning, preventing resonant vibrations before they can develop rather than requiring additional corrective measures
3Productivity
If motor mounts are placed within the fluid path of the HVAC device, then the motor can be integrated with the fan assembly, but the motor mount creates resistance to air flow
Solution Approach 1:
The motor mount is designed with a streamlined, aerodynamic shape that directs air flow around the motor assembly rather than blocking it, using three-dimensional contouring to minimize turbulence and pressure drop while maintaining compact integration
Solution Approach 2:
The motor mount includes flow director elements and air passage features that act as intermediaries to guide air smoothly around the motor, reducing direct interference with the fluid path while maintaining structural support functions
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 solution enhances HVAC efficiency by reducing resonant vibrations and airflow resistance, achieving a 15-20% increase in operating efficiency while maintaining stability and minimizing damage to components.
Implementation Method 1
a first flow director extending from the folded over portion, wherein the first flow director directs the flow of air through a baffle of a HVAC device
Implementation Method 2
The flow-directing motor mount creates a stable coupling between a motor and a HVAC device so as to prevent or minimize development of resonant vibration between the motor and the HVAC device
Data Source
AI summary
Disclosed is a flow-directing motor mount for a motor mounted within the flow stream of a moving air. A flow-directing motor mount is described. Embodiments of the flow-directing motor mount cause a change in the direction of flow of a air stream constrained by a air intake cone or baffle and flowing through a HVAC device, such as a fan of an air-handler assembly. The change in direction of flow creates an angular momentum in the air stream in the direction of rotation of a fan, increasing the overall operating efficiency of the HVAC device. By increasing the operating efficiency, the air resistance created by the flow-directing motor mount supports coupling a motor to the HVAC device is offset, enabling the HVAC device to operate at a higher efficiency.