Air conditioning system
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Solution Overview
Problem
Existing air conditioning systems use two-stage compressors or air-supplementing enthalpy-increasing compressors, which are costly and have complex structures, making them difficult to repair and maintain, while also requiring improvements in energy efficiency for heating modes.
Innovation Solution
An air conditioning system with an indoor heat exchanger, outdoor heat exchanger, compressor, throttling device, four-way valve, and an ejection device that includes an ejector and solenoid valves, allowing for a closed-loop refrigerant circulation and enabling the ejection device to connect to the compressor's discharge side during heating mode to enhance heating efficiency through turbulent diffusion, thus improving energy efficiency without the need for complex and costly components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If two-stage compressors or air-supplementing enthalpy-increasing compressors are used, then the energy efficiency ratio of the air conditioning system is improved, but the cost and device complexity increase significantly
Solution Approach 1:
The patent introduces an ejector as an intermediary device that utilizes the high-pressure refrigerant discharge from the compressor to create a vacuum effect, drawing in additional refrigerant and enhancing the heating capacity without requiring a complex two-stage compressor. The ejector acts as a mediator that amplifies the compressor's output effect through fluid dynamic principles.
Solution Approach 2:
The invention employs pneumatic principles through the ejector device, which uses the kinetic energy of high-pressure refrigerant gas to create a suction effect and mix with low-pressure refrigerant. This hydraulic/pneumatic approach achieves enthalpy increase without mechanical compression stages, simplifying the overall compressor structure while maintaining energy efficiency improvements.
2Power
If two-stage compressors or air-supplementing enthalpy-increasing compressors are used, then the heating capacity of the air conditioning system is improved, but the ease of repair deteriorates
Solution Approach 1:
The ejector serves as a removable intermediary component that can be independently serviced or replaced without affecting the main compressor unit. This modular approach allows maintenance personnel to repair or replace the ejector separately, significantly improving ease of repair compared to integrated two-stage compressors where the entire compression system must be serviced as one unit.
Solution Approach 2:
The system is segmented into distinct functional components: the standard compressor unit and the separate ejector device. This segmentation allows the complex heating enhancement function to be isolated in the ejector, which can be maintained independently, while the compressor itself remains a standard, easily serviceable component.
3Use of energy by moving object
If two-stage compressors or air-supplementing enthalpy-increasing compressors are used, then the energy efficiency ratio is improved, but the cost increases
Solution Approach 1:
The ejector device is a relatively simple, inexpensive component compared to a two-stage compressor. By using this simpler, lower-cost device to achieve the energy efficiency improvement, the overall system cost is reduced while still attaining the desired performance enhancement. The ejector can be manufactured more economically than complex multi-stage compression systems.
Solution Approach 2:
The invention replaces expensive mechanical two-stage compression with a pneumatic/hydraulic ejector system that utilizes fluid dynamics principles. This approach leverages the existing compressor discharge to create the enhancement effect, eliminating the need for additional compression motors, control systems, and associated high-cost components, thereby significantly reducing manufacturing costs.
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 system achieves improved heating effects and energy efficiency ratios, reducing costs and simplifying maintenance by utilizing a lower-cost, simpler structure that maintains compressor stability and oil properties, with energy efficiency improvements up to 18% compared to prior art systems.
Implementation Method 1
a turbulent diffusion effect of the jet flow can be utilized to increase the pressure of output fluid
Implementation Method 2
a turbulent diffusion effect of the jet flow can be utilized to increase the pressure of output fluid
Implementation Method 3
the four-way valve is configured to switch the air conditioning system between a cooling mode and a heating mode
Implementation Method 4
the indoor heat exchanger, the outdoor heat exchanger, the compressor and the throttling device constitute a closed-loop refrigerant circulation circuit
Data Source
AI summary
An air conditioning system, which includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, a throttling device, a four-way valve and an ejection device; the indoor heat exchanger, the outdoor heat exchanger, the compressor and the throttling device form a closed-loop refrigerant circulation circuit, the four-way valve is configured to switch the air conditioning system between a cooling mode and a heating mode, and the ejection device is configured to be capable of being connected to a discharge side of the compressor when the air conditioning system executes the heating mode, so as to improve a heating effect of the air conditioning system. This system has a lower cost and a simple structure for easier maintenance, and the energy efficiency ratio is improved, so that the heating effect of the air conditioning system can be improved when the air conditioning system executes the heating mode.