Refrigeration cycle device
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Solution Overview
Problem
Existing refrigerating cycle devices face challenges in minimizing power consumption while maintaining cooling or heating capacity, as they rely heavily on accurate sensor data and can be inefficient due to large deviations in indoor temperature and sensor errors, leading to unstable operation states and prolonged convergence times.
Innovation Solution
The device controls the operation capacity of the compressor, air amounts of the blowers, and throttle opening degree to minimize power consumption by iteratively adjusting these parameters to maintain target temperature deviations, reducing dependency on sensor accuracy and stabilizing operation states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the predetermined range for deviation is expanded to minimize power consumption, then power consumption is reduced, but the deviation between indoor temperature and set temperature becomes large, resulting in loss of comfort
Solution Approach 1:
The patent applies dynamics by making the control range adaptive rather than fixed. The predetermined range is dynamically adjusted based on the current operating conditions and temperature deviations, allowing the system to optimize power consumption while maintaining comfort. The control range expands or contracts according to real-time system state, resolving the contradiction between energy efficiency and comfort.
Solution Approach 2:
The patent changes the parameter of control range from a static value to a dynamic value that varies with operating conditions. By adjusting the predetermined range based on current temperature deviations and system state, the system achieves both low power consumption and maintained comfort, as the control parameters adapt to balance energy efficiency with temperature stability.
2Stability of the object's composition
If the change amount of manipulation amount is small to avoid hunting, then stability is improved, but convergence time increases and it takes longer to reach minimum power consumption state
Solution Approach 1:
The patent applies dynamics by making the manipulation amount change adaptively. The change amount is not fixed but varies based on the current deviation from the optimal state. When far from optimal, larger changes are permitted to accelerate convergence; when接近 optimal, smaller changes maintain stability. This dynamic adjustment resolves the contradiction between stability and convergence speed.
Solution Approach 2:
The patent implements periodic evaluation and adjustment of operation manipulation amounts. The system periodically searches for optimal manipulation amounts and adjusts the search intensity based on progress toward convergence. This periodic action with varying intensity allows rapid initial convergence followed by fine-tuned stabilization, resolving the time-stability contradiction.
3Measurement precision
If the control relies on sensor data for calculating superheat degree, then control precision is improved, but dependency on sensor accuracy increases, making the system vulnerable to sensor errors and aging
Solution Approach 1:
The patent applies feedback by continuously monitoring actual temperature deviations and using this information to adjust control parameters. The feedback mechanism allows the system to compensate for sensor errors by adapting to actual performance rather than relying solely on calculated values from potentially degraded sensors. This reduces dependency on sensor accuracy while maintaining control precision.
Solution Approach 2:
The patent implements self-service by enabling the system to automatically adjust and optimize its own operation based on observed performance. The system performs self-diagnosis and self-correction by monitoring actual outcomes and adapting manipulation amounts accordingly, reducing reliance on external sensor accuracy and maintaining reliable operation even with degraded sensors.
Data Source
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AI summary
A refrigerating cycle device that can reduce power consumption while cooling capacity or heating capacity is maintained is obtained. Operation control means 100 that controls at least one of an operation capacity of a compressor 1, an air amount of an outdoor blower 4, an air amount of an indoor blower 8, and a throttle opening degree of throttle means 5 so that a deviation between a target value and a sucked air temperature or blowoff air temperature becomes small and power detecting means that detects power consumption of the refrigerating cycle device are provided, and the operation control means 100 acquires an operation manipulation amount with which the power consumption of the refrigerating cycle device becomes the minimum for at least one operation manipulation amount of the operation capacity of the compressor 1, the air amount of the outdoor blower 4, the air amount of the indoor blower 8, and the throttle opening degree of the throttle means 5 and controls at least one of operation capacity of a compressor 1, the air amount of the outdoor blower 4, the air amount of the indoor blower 8, and the throttle opening degree of the throttle means 5 in accordance with the operation manipulation amount.