Air Conditioning Pressure Equilibrium Pipe for Stable Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Air conditioning apparatuses face challenges in smoothly switching the operating mode of heat exchangers due to significant pressure differences in refrigerant, leading to noise, component damage, reduced heat exchange performance, and reliability issues, which affect cooling and heating efficiency and occupant comfort.
Innovation Solution
The air conditioning apparatus incorporates a switch device with high and low pressure guide pipes, a pressure equilibrium pipe, and valves to control refrigerant flow and pressure, allowing for stable mode switching without significant pressure differences, thereby maintaining performance and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the operating mode of the heat exchanger is switched, then the air conditioning apparatus can provide both cooling and heating functions, but the pressure difference of the refrigerant causes noise and component damage
Solution Approach 1:
The pressure equilibrium pipe is activated before the mode switching occurs to equalize the pressure between the high-pressure and low-pressure sides of the refrigerant system. This preliminary pressure equalization prevents the harmful pressure difference from causing noise and component damage during the subsequent mode transition.
Solution Approach 2:
The pressure equilibrium pipe acts as an intermediary pathway that connects the high-pressure and low-pressure refrigerant lines, allowing pressure to be balanced between the two sides during mode transition, thereby eliminating the direct harmful effect of pressure difference on system components.
2Adaptability or versatility
If the operating mode of the heat exchanger is switched, then the air conditioning apparatus can adapt to different environmental conditions, but the pressure difference reduces heat exchange performance
Solution Approach 1:
The pressure equilibrium pipe equalizes the pressure between high-pressure and low-pressure refrigerant lines before the mode switching is completed, ensuring that the heat exchanger operates under optimal pressure conditions from the start of the new mode, thereby maintaining high heat exchange performance.
3Ease of operation
If the compressor operation is interrupted to minimize pressure difference, then the pressure difference is reduced for smooth switching, but the cooling or heating performance is weakened
Solution Approach 1:
The pressure equilibrium pipe serves as an intermediary mechanism that enables pressure equalization during mode transition without requiring compressor interruption. This allows the compressor to continue operating and maintaining cooling or heating performance while the pressure equilibrium pipe handles the pressure balancing function.
Solution Approach 2:
The pressure equilibrium pipe is activated in advance during the mode transition process to equalize pressures before the switching is complete, allowing smooth operation without interrupting the compressor and thereby maintaining continuous cooling or heating performance.
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 enables stable switching of heat exchanger modes without compromising cooling or heating performance, reducing noise and component damage, and improving the reliability and comfort of the air conditioning system by minimizing pressure differences and maintaining compressor operation.
Implementation Method 1
a heat exchanger configured to exchange heat between the refrigerant and the water
Implementation Method 2
a pressure equilibrium pipe that is branched from the refrigerant pipe and that is connected to the low pressure guide pipe
Data Source
AI summary
An air conditioning apparatus includes an outdoor device that is configured to circulate refrigerant and that includes a compressor and an outdoor heat exchanger, a plurality of indoor devices configured to circulate water, and a heat exchange device connecting the outdoor device with the indoor device. The heat exchange device includes a heat exchanger configured to exchange heat between the refrigerant and the water, and a switch device configured to control flow of refrigerant between the indoor devices and the heat exchanger.