Drying apparatus and method for controlling same
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Solution Overview
Problem
Conventional dryers using vapor compression type heat pump systems have a fixed compressor operating frequency, which leads to decreased performance and inefficiency as it cannot adapt to the drying state of the object being dried, resulting in suboptimal energy usage and drying efficiency.
Innovation Solution
A drying apparatus that adjusts the compressor's operating frequency based on the drying state by using temperature sensors to calculate and adjust the frequency according to predetermined threshold temperatures and target temperatures, allowing for optimal operation during different stages of the drying process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the compressor operating frequency is fixed, then the system structure is simple, but the drying efficiency and energy efficiency decrease
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed compressor operating frequency to a variable frequency system that adapts to different drying states. The processor dynamically adjusts the compressor frequency based on temperature sensor feedback, allowing the system to optimize drying efficiency at each stage while maintaining manageable complexity through automated control logic.
Solution Approach 2:
The patent implements feedback control by using temperature sensors to monitor the drying state and feeding this information back to the processor. The processor then adjusts the compressor operating frequency based on this feedback, creating a closed-loop control system that improves drying efficiency without requiring complex manual intervention.
2Loss of energy
If the compressor operating frequency is adjusted according to drying state, then the energy efficiency improves, but the control complexity increases
Solution Approach 1:
The patent uses feedback control to monitor drying state through temperature sensors and automatically adjusts compressor frequency in response. This automated feedback mechanism reduces energy consumption by matching compressor output to actual drying needs while keeping control complexity manageable through systematic processing of sensor data.
Solution Approach 2:
The patent changes the operating parameter (compressor frequency) based on the drying state to optimize energy efficiency. By varying the frequency according to temperature readings and drying progress, the system reduces energy waste without requiring overly complex control mechanisms, as the adjustments follow predetermined logic based on sensor input.
3Productivity
If the compressor operating frequency is adjusted based on temperature sensors, then the drying performance enhances, but the device complexity increases
Solution Approach 1:
The patent employs temperature sensors to provide feedback on the drying state, which the processor uses to adjust compressor frequency. This feedback loop enhances drying performance by ensuring optimal compression at each drying stage while maintaining reasonable system complexity through automated control algorithms that process sensor data systematically.
Solution Approach 2:
The patent replaces manual or mechanical frequency adjustment mechanisms with an electronic control system that uses temperature sensor feedback. This substitution enhances drying performance through precise, automated frequency modulation while actually reducing operational complexity by eliminating manual intervention and using electronic sensors and processors instead of mechanical adjustment devices.
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 adjustment improves both drying efficiency and energy efficiency by optimizing the compressor's operation according to the object's moisture content, reducing energy consumption and enhancing drying performance.
Implementation Method 1
a compressor configured to compress a refrigerant
Implementation Method 2
A dryer using a vapor compression type heat pump system requires a compressor, a condenser, and expansion apparatus, and an evaporator to produce necessary high-temperature air
Data Source
AI summary
A drying apparatus is disclosed. The drying apparatus comprises: a drum; a compressor for compressing a refrigerant; a first temperature sensor provided at an air discharge port of the drum; a second temperature sensor provided at a refrigerant discharge port of the compressor; and a processor which, when a drying cycle for an object to be dried begins, compares a first temperature sensed by the first temperature sensor with a predetermined threshold temperature so as to obtain an operation frequency of the compressor, and when a second temperature sensed by the second temperature sensor reaches a predetermined first target temperature, adjusts the operation frequency of the compressor on the basis of a third temperature calculated on the basis of the first temperature and the second temperature.