Washing Machine Balancer With Wire-Driven Mass for Load Offset
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Solution Overview
Problem
Conventional washing machines face issues with unbalanced loads during rotation, leading to vibrations and noise due to the manual adjustment of balancers, which often fail to precisely offset the eccentric rotation of the rotating tub.
Innovation Solution
A washing machine design incorporating a balancer system with a driving unit and mass that moves along a circumferential direction, utilizing a wire and wheel mechanism to automatically offset unbalanced loads, ensuring stable rotation and minimizing vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a manual balancer adjustment system is used, then the structure is simple, but the precision of offsetting unbalanced load is poor
Solution Approach 1:
The balancer system automatically detects and adjusts itself to counterbalance the unbalanced load without manual intervention. The driving unit moves the mass along the circumferential direction based on the detected unbalanced load, enabling the system to self-regulate and achieve precise positioning.
Solution Approach 2:
The manual mechanical adjustment system is replaced with an automated driving unit that uses a wire and pulley mechanism to move the mass. This substitution eliminates manual operation while achieving precise control through mechanical automation.
2Object-affected harmful factors
If manual balancer adjustment is used, then the device complexity is low, but the vibration and noise are not minimized
Solution Approach 1:
The system automatically detects the unbalanced load and adjusts the mass position without manual intervention, enabling precise counterbalancing that minimizes vibration and noise through self-regulation.
Solution Approach 2:
The system detects the unbalanced load and uses this information to automatically adjust the mass position, creating a feedback loop that continuously optimizes the counterbalance effect and reduces harmful vibrations and noise.
3Reliability
If automated driving unit is added, then the precision of offsetting unbalanced load is improved, but the device complexity increases
Solution Approach 1:
Complex electronic or hydraulic actuation systems are replaced with a simple mechanical driving unit using a wire and pulley mechanism. This mechanical substitution achieves reliable mass positioning while keeping the device structure relatively simple.
Solution Approach 2:
The wire acts as an intermediary element that transmits the driving force from the driving unit to the mass, enabling precise control of mass position while simplifying the overall mechanism compared to direct mechanical coupling.
Data Source
AI summary
A washing machine capable of manipulating a balancer with a simple manipulation, and a balancer thereof, the washing machine including a rotating tub configured to accommodate a laundry while being rotatably disposed on a shaft, at least one mass mounted on the rotating tub so as to move in a circumferential direction of the rotating tub, thereby offsetting an unbalanced load of the rotating tub, at least one wire extending along the circumferential direction of the rotating tub and coupled to the at least one mass, and at least one driving unit coupled to the at least one wire and configured to rotate the at least one mass in the circumferential direction of the rotating tub.