Elastomer Vibration Damper for Quiet Air Extraction Mounting
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Solution Overview
Problem
Existing vibration dampers for air extraction devices, such as range hoods, are complex with many parts, costly, and provide insufficient vibration decoupling between the vibration-inducing components and the housing, leading to noise generation.
Innovation Solution
An air extraction device with a vibration damper comprising an elastomeric body having recesses and projections that allow for secure attachment to both the wall and vibration-inducing parts, utilizing recesses and bushings to decouple vibrations effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing vibration dampers with multiple parts are used, then connection security is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple separate vibration damping components into a single integrated elastomeric body with embedded recesses and protrusions. The elastomeric body combines the functions of vibration isolation, mechanical connection, and stress distribution that previously required multiple separate parts, thereby reducing device complexity while maintaining connection security
Solution Approach 2:
The elastomeric body serves multiple functions simultaneously: it acts as a vibration-damping element, a mounting structure with integrated connection points (recesses and protrusions), and a stress-distributing component. This multi-functionality eliminates the need for separate vibration dampers, mounting brackets, and fastening elements, reducing both part count and manufacturing complexity
2Ease of operation
If existing vibration dampers are used, then mounting is simplified, but vibration decoupling effectiveness is insufficient
Solution Approach 1:
The elastomeric body incorporates localized recesses and protrusions at specific positions to optimize vibration decoupling. These geometric features create localized compliance zones that target specific vibration modes and transmission paths, providing enhanced vibration isolation effectiveness while maintaining overall mounting simplicity
Solution Approach 2:
The use of elastomeric material provides inherent vibration-damping properties through its viscoelastic characteristics. The material's ability to dissipate vibrational energy through internal friction, combined with the geometric features of recesses and protrusions, creates a composite solution that effectively decouples vibrations while simplifying the mounting process
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 vibration damper effectively decouples vibrations from the housing, reducing noise and ensuring a secure, stress-free connection, thereby enhancing the operational silence and durability of the air extraction device.
Implementation Method 1
The vibration damper comprises an elastomeric body
Implementation Method 2
The vibration damper effectively decouples vibrations from the housing, reducing noise
Data Source
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AI summary
An air extraction device (10) is proposed comprising a housing (12) with at least one wall (14) and at least one vibration-inducing part (16). The vibration-inducing part (16) is in particular a motor (16) which is preferably coupled to a fan (17). The motor (16) and/or the fan (17) can have an imbalance, potentially causing undesired vibrations. In order to decouple these vibrations from the housing (12) of the air extraction device (10), according to the invention the air extraction device (10) comprises at least one vibration damper (18), which can be arranged between the vibration-inducing part (16) and the wall (14). The at least one vibration damper (18) comprises an elastomeric body (20), said body (20) comprising a plurality of first cavities (30) and a plurality of second cavities (26). The first cavities (30) are designed to receive first connecting means (25) for connecting to the at least one wall (14). The second cavities (26) are designed to receive second connecting means (27) for connecting to the vibration-inducing part (16).