Method for controlling laundry treating apparatus
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Solution Overview
Problem
Existing laundry treating apparatuses, particularly heat pump-type dryers, struggle to efficiently divide drying operations into processes based on drying efficiency and energy efficiency, lacking effective control strategies for driving apparatuses like the drum and fan.
Innovation Solution
The method involves dividing the drying operation into efficiency increasing, maintaining, and decreasing processes, using separate drivers for the drum and fan, and employing sensors to adjust their RPM and compressor frequency dynamically based on humidity and temperature changes to optimize efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the drying operation is divided into multiple processes based on temperature change of air in exhaust-type dryers, then the drying process can be distinguished, but this approach is difficult to apply to heat pump-type dryers with different drying mechanism characteristics
Solution Approach 1:
The patent changes the parameter used for process division from temperature change (exhaust-type) to humidity change rate (heat pump-type). This parameter adaptation allows the same process division strategy to be effectively applied to different dryer types with different operating mechanisms, resolving the contradiction between adaptability and reliability.
2Stability of the object's composition
If the stabilization section is identified by measuring temperature of fluid in heat pump system, then each driving apparatus can be stabilized, but this has little direct relation to changes in drying efficiency and energy efficiency
Solution Approach 1:
The patent introduces feedback control based on humidity change rate to dynamically adjust the drying process. By continuously monitoring the humidity change rate and comparing it with reference values, the system can identify different drying stages (first drying section, second drying section, etc.) and adjust operating parameters accordingly, thereby improving drying efficiency while maintaining system stability.
3Productivity
If the drying operation is limited to small load and divided based on fluid temperature in heat pump, then some processes can be distinguished, but the drum and fan cannot have different RPM changes, making it difficult to establish advantageous control strategy
Solution Approach 1:
The patent implements dynamic control of drum and fan RPM based on the identified drying section. In the first drying section, both drum and fan operate at high speed to rapidly remove moisture. In the second drying section, the drum speed is reduced while fan speed is maintained or adjusted, optimizing energy consumption. This dynamic adjustment strategy provides flexible control for different loading conditions and improves overall drying efficiency.
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 enhances drying efficiency and energy efficiency by dynamically adjusting the operation of driving apparatuses, reducing energy consumption while ensuring thorough drying.
Implementation Method 1
a fluid circulator (100) including a condenser (110), a compressor (120), and an evaporator (130) for circulating fluid therethrough
Implementation Method 2
a fluid circulator (100) including a condenser (110), a compressor (120), and an evaporator (130) for circulating fluid therethrough
Implementation Method 3
a fluid circulator (100) including a condenser (110), a compressor (120), and an evaporator (130) for circulating fluid therethrough
Implementation Method 4
a fluid circulator (100) including a condenser (110), a compressor (120), and an evaporator (130) for circulating fluid therethrough
Data Source
AI summary
Disclosed is a method for controlling a laundry treating apparatus including an efficiency increasing operation and an efficiency maintaining operation, wherein the efficiency increasing operation includes a first efficiency increasing operation, wherein the controller controls the first driver such that an RPM of the drum corresponds to a first drum RPM and controls the second driver such that an RPM of the fan corresponds to a first fan RPM to perform a first efficiency increasing process, and a second efficiency increasing operation, wherein, after the first efficiency increasing operation, the controller controls the first driver such that the RPM of the drum corresponds to the first drum RPM and controls the second driver such that the RPM of the fan corresponds to a second fan RPM higher than the first fan RPM to perform a second efficiency increasing process.