Washing Machine Pump Damper Attachment to Reduce Vibration Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional laundry treatment apparatuses face challenges in controlling the amplitude of pump vibrations and transferring these vibrations to the cabinet, as the rubber damper used to absorb vibrations is ineffective for small external forces, leading to increased vertical and horizontal vibration amplitudes and vibration transfer.
Innovation Solution
A laundry treatment apparatus with a damper attached to the side surface of the pump between its lowermost and uppermost ends, connected to the cabinet bottom surface, utilizing multiple springs to provide repulsive force and minimize vibration transfer, with a support unit and arms positioned above the pump's center of gravity to reduce vibration amplitude.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rubber damper is used to connect the pump to the cabinet, then vibrations are absorbed, but the amplitude of pump vibration increases and small external forces are not effectively absorbed
Solution Approach 1:
The damper is divided into multiple independent dampers (first damper, second damper, third damper) positioned at different locations on the pump housing. Each damper independently absorbs vibrations from different directions, providing comprehensive vibration reduction while maintaining pump stability.
Solution Approach 2:
Multiple dampers are combined to work together as a unified vibration absorption system. The first damper connects the rear surface to the cabinet, the second damper connects the side surface to the cabinet, and the third damper connects the lower surface to the cabinet, creating a multi-point attachment system that effectively controls pump vibration amplitude.
2Ease of operation
If the damper is fixed at the bottom surface of the pump, then the pump is supported, but the center of gravity position causes increased vibration amplitude in vertical and horizontal directions
Solution Approach 1:
The vibration absorption approach transitions from a single bottom-surface attachment to multi-dimensional attachment points. The first damper attaches at the rear surface (vertical dimension), the second damper attaches at the side surface (horizontal dimension), and the third damper attaches at the lower surface (vertical dimension), providing stabilization in multiple directions simultaneously.
3Object-affected harmful factors
If the rubber damper is used, then it can absorb vibrations, but it transfers vibrations to the cabinet when small external forces are applied
Solution Approach 1:
Different dampers are positioned at specific locations on the pump housing to address local vibration characteristics. The first damper at the rear surface handles vertical vibrations, the second damper at the side surface handles horizontal vibrations, and the third damper at the lower surface provides additional support, creating localized vibration absorption zones that prevent vibration transfer to the cabinet.
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 solution effectively minimizes the amplitude of pump vibrations and prevents the transfer of these vibrations to the cabinet, improving operational stability and reducing noise.
Implementation Method 1
a damper having one end fixed to a side surface of the pump that is defined as a space between a lowermost end of the pump and an uppermost end of the pump and an opposite end fixed to a cabinet bottom surface for attenuating vibrations generated in the pump
Implementation Method 2
utilizing multiple springs to provide repulsive force and minimize vibration transfer
Data Source
AI summary
Disclosed is a laundry treatment apparatus including a cabinet, a tub provided inside the cabinet for providing a space for storage of water, a drum rotatably provided inside the tub for providing a space for storage of laundry, a first water drain pipe for communicating with an inside of the tub, a second water drain pipe for communicating with an outside of the cabinet, a pump for moving water, introduced into the first water drain pipe, to the second water drain pipe, and a damper having one end fixed to a side surface of the pump that is defined as a space between a lowermost end of the pump and an uppermost end of the pump and an opposite end fixed to a cabinet bottom surface for attenuating vibrations generated in the pump.