Multi-split air conditioner and control method therefor
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Solution Overview
Problem
Multi-split air conditioners experience increased load and performance degradation due to extreme outdoor environment temperatures, as they cannot effectively adjust to changes in temperature.
Innovation Solution
Incorporating a heat storage module and control valves in the outdoor unit's pipeline system, allowing the working medium to circulate through a heat storage module when outdoor temperatures are high or low, thereby reducing the load on the air conditioner and maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the multi-split air conditioner operates without a heat storage module, then the structure is simple, but the load increases obviously when outdoor temperature is high or low
Solution Approach 1:
The heat storage module stores thermal energy in advance during moderate temperature conditions, so that when extreme temperatures occur, the stored heat can be released to reduce the load on the air conditioner, preventing performance degradation before it happens
Solution Approach 2:
The system changes the thermal parameters of the working medium by passing it through the heat storage module, which adjusts the temperature and heat content of the refrigerant to maintain stable operation under varying outdoor temperature conditions
2Reliability
If the heat storage module is added to the pipeline, then the load stability is improved, but the device complexity increases
Solution Approach 1:
The heat storage module serves multiple functions: it stores thermal energy during moderate conditions, releases heat during extreme temperatures, and can integrate with hot water systems to provide domestic hot water, making the added complexity justify itself through multiple benefits
Solution Approach 2:
The heat storage module acts as an intermediary between the outdoor environment and the air conditioner system, buffering temperature variations and protecting the main system from extreme conditions through the parallel pipeline configuration
3Loss of energy
If the working medium circulates through the heat storage module, then the heat dissipation is reduced, but the energy consumption increases
Solution Approach 1:
The system converts the harmful effect of high outdoor temperatures into a beneficial resource by storing thermal energy when temperatures are moderate and using it during extreme heat, turning environmental challenges into energy assets that reduce overall heat dissipation losses
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
The heat storage module absorbs or releases heat to stabilize the load on the air conditioner, reducing heat dissipation and maintaining performance across varying temperatures, thus extending the service life and improving efficiency.
Implementation Method 1
The heat storage module absorbs or releases heat to stabilize the load on the air conditioner, reducing heat dissipation and maintaining performance across varying temperatures
Data Source
AI summary
A multi-split air conditioner and control method are provided. The multi-split air conditioner includes an outdoor unit including an oil separator and a four-way valve. The outdoor unit includes a pipeline connecting the oil separator and the four-way valve, and the pipeline includes a first pipeline and a second pipeline arranged in parallel, wherein the first pipeline is provided with a heat storage module and a heat storage module control valve, and the second pipeline is provided with a first control valve. When the outdoor environment temperature satisfies a certain condition, the first pipeline and the second pipeline are controlled, so that at least part of working medium circulates in the first pipeline between the oil separator and the four-way valve through the heat storage module.