Load-Adaptive Washing Machine Water Fill Control for Large Loads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Consumers often overestimate the water needed for large laundry loads, leading to energy inefficiencies in washing machines, as existing technologies lack features to automatically adjust water fill amounts based on load characteristics.
Innovation Solution
A washing machine system that allows users to select a user-defined water fill amount, with a controller determining the load characteristics and automatically adding more water if the selected amount is inadequate, up to a maximum fill capacity, and adjusting operational parameters like agitation intensity or wash time as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the washing machine allows user selection of water fill amount, then user control and adaptability are improved, but energy efficiency deteriorates due to potential overestimation of water needs
Solution Approach 1:
The controller receives feedback from load detection (weight, volume, or fabric type) and automatically adjusts the water fill amount to match the actual load characteristics, preventing user overestimation while maintaining user control for the selected fill level
Solution Approach 2:
The washing machine performs self-adjustment of water fill amount based on automatic load detection, eliminating the need for user expertise in estimating appropriate water levels while preserving user ability to select from predefined fill options
2Loss of energy
If the washing machine provides fixed water fill amounts, then energy efficiency is improved by preventing overwatering, but adaptability deteriorates as users cannot customize water levels for different load types
Solution Approach 1:
The system dynamically adjusts the water fill amount based on detected load characteristics, transitioning from static fixed fill levels to adaptive variable fill levels that respond to actual washing needs while allowing user selection from multiple predefined options
Solution Approach 2:
The controller changes the water fill parameter based on detected load weight, volume, or fabric type, automatically selecting appropriate water levels from available options to balance energy efficiency with adaptability to different washing scenarios
3Measurement precision
If the washing machine automatically detects load characteristics, then water fill accuracy is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical load detection systems with simpler electronic sensors (weight sensors, volume sensors, or fabric type detectors) that provide accurate load characterization with fewer moving parts and lower maintenance requirements
Solution Approach 2:
The load detection system is designed to serve multiple functions: detecting load weight, volume, and/or fabric type, and using this information for both water fill adjustment and wash cycle parameter optimization, reducing overall system complexity through multi-functionality
Data Source
AI summary
A method for washing articles in a wash chamber of the washing machine appliance is provided. The method includes receiving user input of a user-selected water fill amount for a wash cycle, the user-selected water fill amount being the largest water fill amount available for selection by a user. The method also includes determining a characteristic of a load of the washing machine appliance and determining that an amount of water associated with the user-selected water fill amount is inadequate for the load. In response, the method includes providing the wash chamber of the washing machine appliance with an amount of water greater than an amount associated with the user-selected water fill amount.