Indoor Fan Motor Holding Case With Compressed Vibration Damping
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Solution Overview
Problem
Existing indoor units for air conditioners do not sufficiently absorb vibrations and noise generated by the fan motor, as the motor is not adequately fixed on the side of the motor shaft.
Innovation Solution
The indoor unit incorporates a compressing section with slits within the holding case, which compresses vibration damping members to enhance the fixation of the fan motor, thereby effectively absorbing vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the fan motor is strongly fixed at the portion of the holding case on the opposite side of the motor shaft, then the fixation strength is improved, but the vibration and noise cannot be sufficiently absorbed
Solution Approach 1:
The holding case is designed with different structural characteristics at different locations: the opposite side of the motor shaft has strong fixation through screw holes for stable mounting, while the motor shaft side features a compressing section with slits that allows vibration damping members to be compressed and positioned, creating localized vibration absorption capability without compromising overall fixation strength
Solution Approach 2:
Vibration damping members (such as rubber or foam materials) are introduced as intermediary elements between the fan motor and the holding case. These members are compressed by the compressing section and serve as a buffer to absorb vibrations generated by the motor, thereby reducing noise and preventing vibration transmission while maintaining secure fixation
2Device complexity
If the fan motor is not sufficiently fixed at the portion of the holding case on the side of the motor shaft, then the structure is simpler, but the vibration and noise increase
Solution Approach 1:
The holding case is segmented into functionally distinct sections: a fixation portion with screw holes for strong mounting at the opposite side of the motor shaft, and a compressing section with slits at the motor shaft side for vibration damping. This segmentation allows each section to perform its specific function optimally without over-complicating the overall structure
Solution Approach 2:
Instead of using complex fixation mechanisms at the motor shaft side, the invention inverts the approach by creating a compressing section that allows controlled movement and compression of vibration damping members. This inverted design achieves vibration absorption through material deformation rather than rigid fixation, simplifying the structure while effectively reducing noise
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 configuration significantly improves the fixation of the fan motor, effectively curbing vibrations and noise, leading to a more stable and quieter operation compared to previous designs.
Implementation Method 1
a vibration damping member that is accommodated inside the holding case along with the fan motor and absorbs vibration generated when the fan motor is driven
Implementation Method 2
a compressing section that compresses the vibration damping member inside the holding case with the holding case holding the fan motor therein being fitted to the fitting portion
Data Source
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AI summary
An indoor unit for air conditioner according to the present embodiment includes: a cross flow fan that forms an air flow of suctioning indoor air from an air inlet port and blowing out the air from an air outlet port; a fan motor that drives the cross flow fan; a holding case that holds the fan motor therein; a fitting portion to which the holding case holding the fan motor therein is fitted; a vibration damping member that is accommodated inside the holding case along with the fan motor and absorbs vibration generated when the fan motor is driven; and a compressing section that compresses the vibration damping member inside the holding case with the holding case holding the fan motor therein being fitted to the fitting portion.