Air conditioner start control method, device, storage medium and air conditioner
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Solution Overview
Problem
Air conditioners face reliability issues during cold starting when the compressor is flooded, especially under varying temperature conditions or loads, leading to compressor damage or poor cooling/heating performance.
Innovation Solution
A control method and device that acquires current temperature and startup parameters, uses big data simulation to adjust operation parameters such as frequency rising rate, electronic expansion valve speed, and fan speed in real-time, ensuring safe and reliable compressor startup by maintaining optimal oil temperature and superheat degree.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the compressor starts at a high frequency rising rate, then the air conditioning effect is improved, but the compressor will 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 compressor startup conditions (flooded or non-flooded state), allowing the system to optimize between cooling efficiency and compressor safety depending on the actual operating conditions.
Solution Approach 2:
The patent changes the parameter of frequency rising rate based on detected startup conditions. When the compressor is detected to be in a flooded state, the frequency rising rate is reduced to prevent liquid compression damage. When not flooded, a higher frequency rising rate can be used for better air conditioning effect, thus adapting parameters to conditions.
2Reliability
If the compressor starts at a low frequency rising rate, then the compressor safety is improved, but the air conditioning effect becomes poor
Solution Approach 1:
The system dynamically adjusts the frequency rising rate based on real-time detection of compressor startup conditions. Rather than using a consistently low frequency rising rate, the system adapts the rate to the actual conditions, achieving both safety and efficiency when appropriate.
Solution Approach 2:
The patent changes the frequency rising rate parameter based on detected startup conditions. When the compressor is not in a flooded state, the system allows for a higher frequency rising rate to improve air conditioning effect while maintaining safety, thus adapting parameters to conditions rather than using a fixed conservative value.
3Ease of operation
If fixed stop point control is used, then the control simplicity is improved, but the startup reliability becomes poor under varying temperature and load conditions
Solution Approach 1:
The control device performs automatic detection of the compressor startup state (flooded or non-flooded) and autonomously adjusts the frequency rising rate accordingly. This self-service capability eliminates the need for complex manual intervention or predetermined fixed control strategies, achieving both simplicity and reliability.
Solution Approach 2:
The system incorporates feedback by detecting the actual startup conditions of the compressor and using this information to adjust the frequency rising rate. The control device continuously monitors parameters such as suction pressure and discharge pressure to determine the startup state, then feeds this information back to optimize the starting process, ensuring reliability under varying conditions.
Data Source
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AI summary
A control method, a control device for starting an air conditioner, a storage medium, and an air conditioner, the method includes: acquiring current temperature variation information of a weather in an environment of the air conditioner and current startup parameters of the air conditioner; and controlling operation parameters of the air conditioner according to the current temperature variation information and the current startup parameters of the air conditioner. The present invention can overcome a problem of low startup reliability in prior art for a reason that a compressor is damaged or effect of air conditioning is affected by starting a flooded compressor under conditions of different temperature rising or dropping rates or under conditions of different loads.