High-temperature air conditioning device
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Solution Overview
Problem
High-temperature air conditioning devices face insufficient cooling of components like motors and lubricating oil due to excessively high evaporation pressures, which prevents stable and reliable operation.
Innovation Solution
The device incorporates a throttling and cooling pipeline assembly with parallel medium-pressure and low-pressure pipelines, featuring throttle valves and a booster pipeline to regulate refrigerant pressure, ensuring low-pressure refrigerant for cooling components, and includes a boosting device to maintain cycle efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the evaporation temperature in the evaporator is excessively high, then the cooling capacity is improved, but the pressure of the high-temperature and high-pressure liquid refrigerant becomes excessively high, causing insufficient cooling of components
Solution Approach 1:
The refrigeration system is divided into two independent circuits: a high-temperature circuit for evaporator cooling and a low-temperature circuit for component cooling. The high-temperature circuit maintains high evaporation temperature for adequate cooling capacity, while the low-temperature circuit uses a throttling device to create low-pressure conditions suitable for cooling motors, frequency converters, and lubricating oil, thus resolving the pressure conflict
Solution Approach 2:
A throttling device acts as an intermediary between the high-temperature refrigeration circuit and the low-temperature component cooling circuit. It reduces the pressure of refrigerant from the high-temperature circuit to create low-pressure refrigerant suitable for component cooling, enabling the system to simultaneously achieve high evaporation temperature and low cooling pressure
2Stress or pressure
If the pressure of refrigerant is reduced for component cooling, then the cooling effect on components is improved, but the evaporation pressure becomes too low, reducing cooling capacity
Solution Approach 1:
The system segments the refrigeration function into two independent circuits with different pressure levels. The low-pressure circuit is dedicated to component cooling where low pressure is required, while the high-temperature circuit maintains high evaporation temperature and pressure for adequate cooling capacity. This segmentation allows both contradictory requirements to be satisfied simultaneously in their respective circuits
Solution Approach 2:
The refrigeration system achieves multi-functionality by serving dual purposes: the high-temperature circuit provides main refrigeration with high evaporation temperature, while the low-temperature circuit provides component cooling with low pressure. The throttling device enables this universal system to adapt to different pressure requirements for different functions
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 configuration effectively lowers the pressure of refrigerant in the low-pressure pipeline, ensuring adequate cooling of components and maintaining a stable operation in high-temperature refrigerating or heating pump devices, addressing the issue of insufficient cooling caused by high evaporation pressures.
Implementation Method 1
a throttling device, configured to reduce a pressure of high-temperature and high-pressure liquid refrigerant
Implementation Method 2
an evaporator, configured to cool the high-temperature and high-pressure gaseous refrigerant
Implementation Method 3
a compressor, configured to compress the low-temperature and low-pressure gaseous refrigerant to be high-temperature and high-pressure gaseous refrigerant
Implementation Method 4
the high-temperature and high-pressure gaseous refrigerant flows into the condensation 02
Data Source
AI summary
Disclosed is a high-temperature air conditioning device. By changing an arrangement mode of throttle valves, a pressure of refrigerant inside a low-pressure pipeline is made to be lower than a pressure of refrigerant inside a medium-pressure pipeline, thus ensuring that the refrigerant, used for cooling components, inside the low-pressure pipeline has a low pressure, thereby solving a problem in the prior art that a frequency converter, a motor and lubricating oil are not cooled sufficiently or cannot be cooled due to excessively high evaporation pressure.