Control method for clothes drying device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clothing dryers exhibit uneven drying when dealing with mixed loads, particularly when a small load includes high-water-content items, leading to incomplete drying and poor user experience.
Innovation Solution
A method for controlling a clothing dryer that includes a load determining stage, first and second heating stages, and an extra drying stage, with adjustments based on load size and water content, such as extending the first heating stage for high-water-content loads and alternating drum rotation for large loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drying drum rotates in a single direction with a fixed drying time, then the control method is simple and low cost, but the drying is uneven when dealing with mixed loads or small loads with high-water-content items
Solution Approach 1:
The drying drum rotation direction is dynamically adjusted based on load characteristics. The control method detects whether the load is a small load with high-water-content items and automatically changes the drum rotation from single-direction to alternating forward-reverse rotation, resolving the contradiction between simple control and uniform drying results
Solution Approach 2:
The drying parameters (rotation direction, drying time) are changed based on detected load conditions. When high-water-content loads are detected, the system extends drying time and alters rotation patterns, enabling adaptive control that achieves uniform drying without complex hardware modifications
2Manufacturing precision
If the drying time is extended for high-water-content loads, then the drying uniformity is improved, but the energy consumption and drying time increase
Solution Approach 1:
The system uses humidity sensors to continuously monitor the drying process and provides feedback to the control unit. Based on this feedback, the system dynamically adjusts drying time and rotation patterns, extending time only when high-water-content loads are detected, thus achieving uniform drying without unnecessary time extension for all loads
Solution Approach 2:
The control method performs preliminary detection of load characteristics before the main drying process. By identifying high-water-content loads in advance, the system can prepare appropriate drying parameters, ensuring optimal drying time allocation from the start without excessive energy consumption
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 method ensures even drying of mixed loads by providing sufficient drying time for high-water-content items and preventing entanglement, thereby improving drying effectiveness and user satisfaction.
Implementation Method 1
A clothing dryer is a cleaning household appliance which instantly evaporates and dries moisture in the washed clothing through electric heating
Implementation Method 2
A clothing dryer is a cleaning household appliance which instantly evaporates and dries moisture in the washed clothing through electric heating
Implementation Method 3
acquiring a plurality of humidity values of the load successively
Data Source
AI summary
A control method for a clothes drying device includes: a load determination stage: determining the size of a load; and a drying stage: on the basis of the size of the load, selectively controlling a drying drum to rotate clockwise and counterclockwise alternately or controlling the drying stage to at least operate for a first preset time. In the embodiments, targeted control can be carried out on different loads: during the drying of a large load by controlling a drying drum to rotate clockwise and counterclockwise alternately, the load is effectively prevented from being knotted and twisted; and during the drying of a small load, the phenomenon of uneven drying of mixed loads is avoided by means of prolonging the drying time.