Laundry Dryer Motor Mount With Vibration-Damping Insulation
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Solution Overview
Problem
Laundry dryers experience high motor-induced noise levels due to vibrations, which are exacerbated by resonance when motor frequencies match natural vibration frequencies of body elements, and existing noise suppression methods can lead to deformation and loss of rigidity in connections.
Innovation Solution
A motor mount with a pair of bearers and a supporting portion containing a vibration-damping insulation member, where the insulation member is embedded in a seat-shaped cavity or groove to absorb sound and vibrations, maintaining connection firmness and preventing oscillation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an intermediate support is disposed between the chassis and mounting frame members to suppress noise, then motor-induced noise is reduced, but the connection becomes elastic and deforms over time
Solution Approach 1:
The patent introduces a vibration damping member as an intermediary element between the mounting frame and the motor. This member acts as a mediator that absorbs vibrations and reduces noise transmission while maintaining a stable connection. The damping member is specifically designed with viscoelastic properties to dissipate vibration energy without causing the elastic deformation problems associated with intermediate supports.
Solution Approach 2:
The patent changes the physical parameters of the connection system by introducing a vibration damping member with specific viscoelastic properties. This member has optimized damping coefficients and stiffness characteristics that allow it to reduce vibrations effectively while maintaining connection rigidity. The parameter optimization ensures that the connection remains stable over time without deforming.
2Productivity
If high revolution motor is used to improve drying performance, then productivity increases, but noise and vibrations increase
Solution Approach 1:
The patent converts the harmful vibrations generated by high-speed motor operation into beneficial heat energy through the vibration damping member. The viscoelastic material in the damping member transforms mechanical vibration energy into thermal energy through internal friction, thereby reducing noise and vibrations while maintaining high motor speeds for improved drying performance.
3Object-affected harmful factors
If insulation member with elastic structure is used to reduce noise, then vibrations are dampened, but connection rigidity is compromised and parts move relative to each other
Solution Approach 1:
The patent optimizes the physical parameters of the vibration damping member to achieve a balance between vibration dampening and connection rigidity. The damping member is designed with specific stiffness and damping coefficient values that allow it to absorb vibrations effectively while maintaining sufficient structural rigidity to prevent relative movement between connected parts.
Solution Approach 2:
The patent employs composite material structures in the vibration damping member, combining viscoelastic materials with reinforcing elements. This composite construction provides both the vibration absorption capabilities of elastic materials and the structural rigidity needed to maintain connection firmness, preventing the weakness and relative movement problems associated with purely elastic structures.
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
Significantly reduces motor-induced noise by absorbing vibration energy without compromising the robustness of the motor mount connection, thereby minimizing noise levels and preventing long-term noise increase.
Implementation Method 1
an insulation member with vibration damping properties is placed in a seat shaped as a cavity disposed on the supporting portion, in which the insulation member damps the motor-induced vibrations and absorbs sound
Implementation Method 2
the insulation member embedded in the seat provided on the supporting portion damps the motor-induced vibrations and absorbs sound
Data Source
Figure 1
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Figure 4~5
AI summary
The present invention relates to a laundry dryer (1) comprising a body (2), a drum (3) provided in the body (2), in which the laundry items are loaded, a motor (4) enabling rotating the drum (3), and a motor mount (8) provided in the body (2), on which the motor (4) is placed so as to enable supporting the motor (4) from two sides, having a first bearer (5) and a second bearer (6) bearing the motor (4) and a supporting portion (7) extending in between the first bearer (5) and the second bearer (6).