Motor Support Integrating Rings for HVAC Blower Vibration Control
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Solution Overview
Problem
The existing motor support systems for air blowers in motor vehicle heating, ventilation, and air conditioning systems are complex and expensive to manufacture due to the need for multiple rings, which complicates the structure and increases costs.
Innovation Solution
The motor support system uses a single inner ring to hold the motor, eliminating the need for a third ring, and incorporates features like central and end abutments, vibration decoupling pads, and axial retaining elements to secure and decouple vibrations, while the outer ring is fixed to the volute, simplifying the structure and reducing manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three rings are used to hold the motor in position, then the motor is securely held, but the structure becomes complex and manufacturing costs increase
Solution Approach 1:
The patent merges the functions of multiple rings into a single integrated motor support structure. The inner ring and outer ring are combined into one piece that performs all necessary functions: holding the motor, providing bearing surfaces, and ensuring coaxial alignment, thereby eliminating the need for a third separate ring and reducing overall structural complexity
Solution Approach 2:
The motor support structure is designed as a multi-functional component that simultaneously provides motor mounting, bearing surfaces for radial and axial loads, coaxial alignment features, and vibration isolation. This universal design consolidates what would traditionally require multiple separate components into a single versatile part
2Reliability
If three rings are used to hold the motor in position, then the motor is securely held, but manufacturing costs increase
Solution Approach 1:
The patent merges the functions of multiple rings into a single integrated motor support structure. The inner ring and outer ring are combined into one piece that performs all necessary functions: holding the motor, providing bearing surfaces, and ensuring coaxial alignment, thereby eliminating the need for a third separate ring and reducing overall structural complexity
Solution Approach 2:
The invention discards the unnecessary third ring from the traditional three-ring configuration. By eliminating this redundant component while maintaining all essential functions through the optimized two-ring design, the patent reduces part count, simplifies manufacturing, and lowers costs without compromising motor holding security
3Object-affected harmful factors
If vibration decoupling pads are added between the inner ring and outer ring, then vibrations are effectively decoupled, but the structure becomes more complex
Solution Approach 1:
The patent introduces vibration decoupling pads as intermediary elements positioned between the inner ring and outer ring. These pads serve as a mediator that absorbs and isolates vibrations generated by the motor, preventing their transmission to the outer ring and reducing harmful vibrations in the HVAC system without requiring fundamental changes to the overall structure
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 simplifies the motor support structure, reduces manufacturing costs, and effectively decouples vibrations, enhancing the durability and performance of the motor support system by eliminating unnecessary components and improving vibration management.
Implementation Method 1
The motor support comprises at least one vibration decoupling pad arranged between the inner ring and the outer ring
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The subject of the invention is a motor support for a blower of a motor vehicle heating, ventilation and/or air-conditioning system, comprising a first ring (3), referred to as an outer ring, and a second ring (4), referred to as an inner ring, positioned inside the outer ring, the inner ring being configured to house an electric motor, and the outer ring being configured to be fixed to part of the motor vehicle heating, ventilation and/or air-conditioning system, said inner ring comprising an axial retention device (12) for the retention of said motor and at least one end stop (13) able to collaborate with an associated bearing surface (14) of the outer ring (3).