Air Conditioner Compressor Load Control for Multi-Unit Reliability
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Solution Overview
Problem
Air conditioners with multiple indoor units connected to a single outdoor unit face challenges in managing compressor load changes, particularly in high temperature regions, where existing systems struggle to maintain optimal performance and reliability.
Innovation Solution
The air conditioner system includes sensors to measure compressor state information such as pressure and saturation temperature, and a controller that adjusts indoor unit air flow based on thresholds to manage subcooling control modes, ensuring the compressor operates within protective ranges, thereby maintaining performance and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the air conditioner operates with multiple indoor units connected to a single outdoor unit, then the system can efficiently use indoor and outdoor space and fit various building types, but the system struggles to maintain optimal compressor performance and reliability in high temperature regions due to load management challenges
Solution Approach 1:
The system dynamically adjusts the air flow of individual indoor units based on real-time compressor state monitoring. When the compressor operates in high temperature regions or approaches protective control ranges, the system automatically reduces the air flow of connected indoor units to manage load changes and maintain compressor reliability, thereby resolving the contradiction between system versatility and compressor reliability.
2Productivity
If the compressor capacity is increased to meet high cooling demands, then rapid cooling and heating can be achieved, but the compressor may operate in high temperature regions leading to reduced reliability
Solution Approach 1:
The system implements feedback control by continuously monitoring compressor state parameters (such as discharge temperature and pressure) and adjusting the air flow of indoor units accordingly. When the compressor operates in high temperature regions or approaches protective control ranges, the system automatically reduces the air flow to manage load changes, thereby maintaining compressor reliability while preserving high cooling capacity when conditions permit.
3Reliability
If the air flow of indoor units is reduced to protect the compressor in high temperature regions, then compressor reliability is improved, but the cooling performance and user comfort may be compromised
Solution Approach 1:
The system dynamically adjusts air flow based on real-time compressor state monitoring rather than maintaining a fixed reduced air flow. When the compressor operates within safe parameters, the system allows full air flow for optimal cooling performance. When the compressor approaches protective control ranges or operates in high temperature regions, the system automatically reduces air flow to protect the compressor, thereby resolving the contradiction between reliability and cooling performance through adaptive control.
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 solution enhances compressor reliability and extends the operating range of the air conditioner, improving user satisfaction by actively managing air flow to maintain optimal performance even under high temperature conditions.
Implementation Method 1
a sensor for measuring the compressor's state configured to detect compressor state information that includes at least one of a pressure value and a saturation temperature of the compressor
Implementation Method 2
the controller may control air flow on the side of an indoor unit by comparing the pressure value of the compressor measured from the sensor with a pressure threshold
Implementation Method 3
If the sensor measures a saturation temperature, the controller may control air flow on the side of an indoor unit by comparing the saturation temperature measured from the sensor with a temperature threshold
Implementation Method 4
Refrigerant fluid absorbs surrounding heat during evaporation, and this property is used for cooling
Implementation Method 5
the property that refrigerant gas discharges heat during liquefaction is used for heating
Data Source
AI summary
The present disclosure provides an air conditioner. The air conditioner includes a compressor; a sensor for measuring the compressors state configured to detect compressor state information that includes at least one of a pressure value and a saturation temperature of the compressor; and a controller configured to control air flow on the side of an indoor unit by comparing the compressor state information measured from the sensor and a threshold.