Laundry Appliance Humidity Reduction Using Door-Sensor Feedback
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Solution Overview
Problem
Laundry treating appliances often experience moisture retention after cycles, leading to mold, mildew, and unpleasant odors due to high humidity within the treating chamber and other areas, which existing technologies fail to adequately address.
Innovation Solution
The method involves using a humidity reduction device, such as a fan or heat source, in conjunction with door sensors to determine when the laundry has been removed or the door has been reclosed, initiating a dehumidification process to reduce humidity levels within the treating chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the laundry is left in the treating chamber after the cycle completes, then the user has convenience of not immediately removing laundry, but moisture accumulates leading to mold, mildew, and unpleasant odors
Solution Approach 1:
The system performs preliminary dehumidification action by detecting door opening/closing patterns and automatically initiating humidity reduction processes before moisture levels become problematic, preventing mold and mildew growth in advance
Solution Approach 2:
The controller monitors door sensor signals to detect when the door has been opened and reclosed, using this feedback information to determine when to activate the humidity reduction device, creating a closed-loop control system that responds to actual usage conditions
2Object-generated harmful factors
If a humidity reduction device is continuously operated to prevent moisture accumulation, then mold and mildew are inhibited, but energy consumption increases
Solution Approach 1:
Instead of continuous operation, the humidity reduction device operates periodically based on detected door opening/closing events, activating only when the controller determines laundry has been removed or the door reclosed, reducing unnecessary energy consumption
Solution Approach 2:
The system uses the door sensor and controller to automatically detect when dehumidification is needed and initiates the humidity reduction process without user intervention, making the moisture prevention function self-regulating based on actual conditions
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 approach effectively inhibits the growth of microorganisms that cause odors, ensuring a cleaner environment within the appliance and extending its lifespan while enhancing user satisfaction.
Implementation Method 1
The humidity reduction device may include a fan
Implementation Method 2
The humidity reduction device may include a heat source
Implementation Method 3
reducing humidity in the treating chamber
Data Source
AI summary
A method of operating a laundry treating appliance for treating laundry according to a treating cycle of operation. The laundry treating appliance comprises a treating chamber for receiving the laundry that is selectively accessible through a door movable between opened and closed positions. The method comprises determining at the end of a laundry treating cycle whether the door has been opened and subsequently reclosed and reducing humidity in the treating chamber after the determination that the door has been reclosed.