Vacuum Cleaner Motor Mount and Seal for Vibration Isolation
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Solution Overview
Problem
Current vacuum cleaners suffer from noise disturbances due to vibrations transferred from the motor and suction fan unit to the motor housing and casing, despite existing solutions that only partially address noise reduction.
Innovation Solution
The design separates holding and sealing means to optimize vibration damping and sealing independently, using resilient holding means and flexible sealing means to prevent vibration propagation, allowing for a more efficient reduction in noise levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the polymeric ring is made more rigid to provide more efficient sealing, then sealing performance is improved, but vibration propagation limitation becomes less efficient
Solution Approach 1:
The patent divides the previously combined sealing and holding functions into separate components: a sealing ring for sealing the suction flow path and a holding means (mounting structure) for supporting the motor and suction fan unit. This segmentation allows each component to be optimized for its specific function without compromise.
Solution Approach 2:
The holding means acts as an intermediary between the motor/suction fan unit and the motor housing, providing vibration damping through its resilient properties while the sealing ring handles sealing independently. This intermediary structure prevents direct vibration transmission to the housing.
2Object-affected harmful factors
If the polymeric ring is made less rigid to provide more efficient vibration damping, then vibration propagation limitation is improved, but sealing performance deteriorates
Solution Approach 1:
The patent separates the sealing function (handled by the sealing ring) from the vibration damping function (handled by the holding means), allowing the holding means to be less rigid for better vibration absorption without compromising sealing performance.
Solution Approach 2:
The holding means is designed with resilient properties (less rigid) to optimize vibration damping, while the sealing ring maintains appropriate rigidity for effective sealing. This parameter optimization for each component resolves the contradiction.
3Device complexity
If the sealing and holding functions are combined in a single polymeric ring, then device complexity is reduced, but vibration propagation prevention becomes less efficient
Solution Approach 1:
The patent divides the combined sealing and holding functions into separate components (sealing ring and holding means), which improves vibration propagation prevention despite increasing component count. The separation allows each component to be optimized for its specific function.
Solution Approach 2:
Different parts of the motor housing assembly have different functional requirements: the sealing ring requires sealing properties while the holding means requires vibration damping properties. The patent applies local quality by giving each component the specific properties needed for its location and function.
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 approach effectively reduces noise levels by isolating vibrations and preventing their transmission to the motor housing, resulting in a quieter operation.
Implementation Method 1
The holding means is arranged to prevent propagation of vibrations originated in the motor and suction fan unit to the motor housing by the holding means responding resiliently to forces from the motor and suction fan unit
Implementation Method 2
The sealing means is arranged to prevent propagation of vibrations originated in the motor and suction fan unit to the motor housing by yielding to forces from the motor and suction fan unit
Data Source
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AI summary
The present invention relates to a vacuum cleaner having a motor housing provided with an inlet and an outlet, a motor and suction fan unit, which is arranged in the motor housing and which is arranged to create a suction flow in through the inlet of the housing, through the motor and suction fan unit and out through the outlet of the motor housing. The vacuum cleaner further comprise holding means for holding the motor and suction fan unit at the motor housing and sealing means arranged to guide the suction flow from the inlet of the motor housing and into the motor and suction fan unit in a sealingly manner. The holding means is arranged to prevent propagation of vibrations originated in the motor and suction fan unit from the motor housing by the holding means responding resiliently to forces from the motor and suction fan unit, and the holding means carries the motor and suction fan unit at the housing. The sealing means is arranged to prevent propagation of vibrations originated in the motor and suction fan unit from the motor housing by yielding to forces from the motor and suction fan unit.