System and method for controlling an air conditioning system and an outdoor apparatus of the system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional variable-frequency air conditioning systems require complex and costly communication between indoor and outdoor apparatuses to control the compressor, leading to structural complexity and reliability issues.
Innovation Solution
A method and system for controlling a variable-frequency compressor in the outdoor apparatus independently, adjusting the target refrigerant saturation temperature based on working time and stop-start cycles, eliminating the need for specific communication with the indoor apparatus, thereby simplifying the system and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the indoor apparatus sends control signals to the outdoor apparatus via specific communication mode, then the compressor can be controlled to operate at certain frequency, but the system structure becomes complex and cost increases
Solution Approach 1:
The outdoor apparatus autonomously determines its operating frequency by detecting refrigerant parameters (temperature, pressure) and calculating saturation temperature, eliminating the need for continuous control signals from the indoor apparatus. The compressor performs self-regulation based on real-time refrigerant conditions, making the system independent of complex communication infrastructure.
Solution Approach 2:
The patent extracts the frequency determination function from the indoor apparatus and communication system, relocating it to the outdoor apparatus. The outdoor unit now independently calculates target refrigerant saturation temperature and derives operating frequency from this parameter, removing the dependency on indoor apparatus control signals and simplifying the overall system architecture.
2Ease of operation
If the indoor apparatus sends control signals to the outdoor apparatus, then the compressor frequency can be adjusted according to indoor temperature, but the reliability of the system decreases
Solution Approach 1:
The outdoor apparatus autonomously determines its operating frequency by detecting refrigerant parameters (temperature, pressure) and calculating saturation temperature, eliminating the need for continuous control signals from the indoor apparatus. The compressor performs self-regulation based on real-time refrigerant conditions, making the system independent of complex communication infrastructure.
Solution Approach 2:
The system implements local feedback control where the outdoor apparatus continuously monitors refrigerant temperature and pressure, calculates the saturation temperature, and adjusts compressor frequency in real-time based on this feedback. This closed-loop control ensures reliable operation by directly responding to actual refrigerant conditions rather than relying on indirect temperature signals from the indoor unit.
3Ease of operation
If complex communication mode is used between indoor and outdoor apparatus, then precise compressor control is achieved, but the cost of the system increases
Solution Approach 1:
The outdoor apparatus autonomously determines its operating frequency by detecting refrigerant parameters (temperature, pressure) and calculating saturation temperature, eliminating the need for continuous control signals from the indoor apparatus. The compressor performs self-regulation based on real-time refrigerant conditions, making the system independent of complex communication infrastructure.
Solution Approach 2:
The patent extracts the frequency determination function from the indoor apparatus and communication system, relocating it to the outdoor apparatus. The outdoor unit now independently calculates target refrigerant saturation temperature and derives operating frequency from this parameter, removing the dependency on indoor apparatus control signals and simplifying the overall system architecture.
Data Source
AI summary
A method for controlling an air conditioning system, an outdoor apparatus of an air conditioning system and an air conditioning system are provided. The method includes: obtaining a working mode of the air conditioning system and starting a variable-frequency compressor in an outdoor apparatus of the air conditioning system according to the working mode; obtaining a target refrigerant saturation temperature; performing a variable-frequency control on the variable-frequency compressor according to the target refrigerant saturation temperature; during the variable-frequency control, obtaining a working time of the variable-frequency compressor and a stop-start number of time of the variable-frequency compressor in a first predetermined period; and adjusting the target refrigerant saturation temperature according to the working time of the variable-frequency compressor and the stop-start number of time of the variable-frequency compressor in the first predetermined time.