Elastically Deformable Damping Element for Motor Vibration Control
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Solution Overview
Problem
Conventional solutions for reducing noise and vibration in electric motors of airflow generating apparatuses, such as fans, are inefficient as they either fail to adequately absorb tangential movements or transmit excessive rotational movement, leading to unwanted noise and potential damage.
Innovation Solution
The proposed solution involves a damping system with elastically deformable elements arranged between the electric motor and the structural element, featuring a central wall with elongated sides and constrictions, allowing for partial absorption of tangential movements while preventing radial movement, thus reducing noise and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an elastically deformable element is used as an intermediate element between the electric motor and the structural element, then tangential vibrations are absorbed and bending is minimized, but the electric motor is either held insufficiently causing blade contact with side walls or excessively preventing tangential movement
Solution Approach 1:
The damping element is divided into multiple functional zones: a first portion for absorbing tangential vibrations through elastic deformation, and a second portion for providing radial support to prevent motor displacement. This segmentation allows each zone to specialize in one function, resolving the contradiction between vibration absorption and stable holding.
Solution Approach 2:
Different regions of the damping element have different mechanical properties: the first portion has high elasticity for tangential movement absorption, while the second portion has higher rigidity for radial support. This local differentiation of material properties enables simultaneous vibration damping and stable motor positioning without blade contact.
2Strength
If the electric motor is held with considerable strength and rigidity, then radial stability is improved, but tangential movement capacity is reduced causing excessive vibration transmission
Solution Approach 1:
The damping element is divided into multiple functional zones: a first portion for absorbing tangential vibrations through elastic deformation, and a second portion for providing radial support to prevent motor displacement. This segmentation allows each zone to specialize in one function, resolving the contradiction between vibration absorption and stable holding.
Solution Approach 2:
Different regions of the damping element have different mechanical properties: the first portion has high elasticity for tangential movement absorption, while the second portion has higher rigidity for radial support. This local differentiation of material properties enables simultaneous vibration damping and stable motor positioning without blade contact.
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 effectively dampens tangential vibrations and movements, reducing noise and preventing damage by allowing rotational movement while maintaining sufficient radial stability, thereby improving the operational quietness and durability of the apparatus.
Implementation Method 1
a damping element (3) which is elastically deformable and has a longitudinal extension
Implementation Method 2
The damping element (3) comprises a central wall (3.1), such that according to the longitudinal extension the central wall has two longitudinal ends and two elongated sides
Data Source
AI summary
The present invention relates to damping means of an electric motor of an airflow generating apparatus and an airflow generating apparatus having the damping device, the damping device having a first body, which defines a compartment for housing the electric motor (A); a second body for being arranged fixed to the apparatus, which defines a housing for housing the first body; and a damping element which is elastically deformable and has a longitudinal extension. The first body and the second body are separated from one another, the damping element being arranged such that it determines an attachment between the first body and the second body.