Control method, control device for starting air conditioner, storage medium and air conditioner
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Solution Overview
Problem
The reliability of air conditioner compressor startup is compromised when starting in a flooded condition, especially under varying temperature and load conditions, leading to potential compressor damage and poor cooling/heating performance.
Innovation Solution
A control method and device that acquires current temperature and startup parameters, adjusts operation parameters in real-time using big data simulation to ensure safe and reliable compressor startup, by controlling frequency rising rate, electronic expansion valve speed, and fan speed based on temperature trends and startup conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the compressor starts with a high frequency rising rate to achieve fast cooling/heating effect, then the cooling/heating efficiency is improved, but the compressor may be damaged due to liquid compression in flooded conditions
Solution Approach 1:
The patent applies dynamics by making the frequency rising rate adjustable and adaptive rather than fixed. The control device dynamically adjusts the frequency rising rate based on real-time detection of startup conditions (flooded or non-flooded), allowing the system to transition from a static control mode to a dynamic one that responds to changing operational states, thereby resolving the contradiction between fast startup and compressor safety.
Solution Approach 2:
The patent changes the parameter of frequency rising rate based on detected startup conditions. When flooding is detected, the frequency rising rate is set to a first (lower) value to prevent liquid compression damage. When no flooding is detected, the frequency rising rate is set to a second (higher) value to achieve fast cooling/heating effect. This parameter adaptation resolves the technical contradiction by selecting appropriate operating parameters based on system state.
2Reliability
If the compressor starts with a low frequency rising rate to protect against liquid compression damage, then the compressor reliability is improved, but the cooling/heating effect becomes poor
Solution Approach 1:
The system transitions from a static, conservative frequency rising rate to a dynamic control strategy that adjusts the frequency rising rate based on detected startup conditions. This allows the system to achieve high productivity when safe to do so, while maintaining reliability when flooding is present, thereby resolving the contradiction between protection and performance.
Solution Approach 2:
The patent implements parameter changes by setting different frequency rising rate values based on startup condition detection. The control device adjusts the frequency rising rate parameter from a first value (for flooded conditions) to a second value (for non-flooded conditions), enabling the system to optimize both reliability and productivity based on actual operating conditions.
3Ease of operation
If fixed stop point control is used for compressor startup, then the control simplicity is maintained, but the adaptability to different temperature and load conditions is reduced
Solution Approach 1:
The patent applies feedback by detecting the startup condition (flooded or non-flooded) and using this information to adjust the frequency rising rate. The control device continuously monitors system state and adjusts control parameters accordingly, transforming a simple open-loop control into a closed-loop feedback system that adapts to different operating conditions while maintaining reasonable control complexity.
Solution Approach 2:
The patent performs preliminary detection of startup conditions before initiating compressor startup. By detecting whether flooding exists before the compressor starts, the system can pre-determine the appropriate frequency rising rate, allowing the control device to prepare the optimal control parameters in advance based on the detected condition, thereby improving adaptability without significantly increasing operational complexity.
Data Source
AI summary
A control method, a control device for starting an air conditioner, a storage medium, and an air conditioner are disclosed. The method includes the step of acquiring current temperature variation information of a weather in an environment of the air conditioner and current startup parameters of the air conditioner. The method further includes the step of controlling operation parameters of the air conditioner according to the current temperature variation information and the current startup parameters of the air conditioner.