Air Conditioning Ejection Device for Two-Stage Heating Pressurization
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Solution Overview
Problem
Existing air conditioning systems with two-stage compressors or air-supplementing enthalpy-increasing compressors have high costs and complicated structures, making them difficult to repair and maintain, while also requiring improvement in energy efficiency ratio.
Innovation Solution
An air conditioning system with an ejection device connected to the discharge side of the compressor during heating mode, utilizing a turbulent diffusion effect to mix low-pressure and high-pressure fluids, achieving two-stage pressurization and improving energy efficiency without affecting compressor stability or oil properties.
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:
An ejection device is introduced as an intermediary component between the compressor and the four-way valve. This ejection device includes an ejector that utilizes fluid dynamics (specifically the ejector effect) to mix high-pressure refrigerant from the compressor with low-pressure refrigerant, achieving enthalpy increase without requiring a complex two-stage compressor. The ejection device acts as a mediator that simplifies the overall system 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 system is segmented into distinct functional modules: a standard compressor, a separate ejection device, a four-way valve, and heat exchangers. By separating the enthalpy-increasing function into a dedicated ejection device rather than integrating it into the compressor, the system becomes modular. This segmentation allows maintenance personnel to easily replace or repair the ejection device independently without affecting the compressor, significantly improving ease of repair while maintaining enhanced heating capacity.
3Device complexity
If an ejection device is connected to the discharge side of the compressor, then the cost and structure are simplified, but the stability of compressor operation may be affected
Solution Approach 1:
The ejection device is designed with inherent feedback mechanisms where the high-pressure refrigerant from the compressor directly drives the ejector operation. The ejector automatically adjusts its operation based on the pressure and flow conditions from the compressor, creating a self-regulating system. This feedback mechanism ensures that the ejection process does not disrupt compressor stability while achieving the desired enthalpy increase, maintaining reliable operation throughout the system.
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 a lower cost, simpler structure, easier maintenance, and enhances heating effect with an improved energy efficiency ratio of up to 18% compared to prior 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
the ejection device comprises an ejector
Data Source
Figure 1~2
Figure 3~6
AI summary
The present disclosure belongs to the technical field of air conditioning, and aims to solve the problem that the two-stage compressors or air-supplementing enthalpy-increasing compressors used in existing air conditioning systems have high costs and complicated structures and are not easy to repair. To this end, the present disclosure provides 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 constitute 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. The air conditioning system of the present disclosure has a lower cost and a simple structure, and is convenient for the maintenance personnel to inspect, repair and replace; moreover, the energy efficiency ratio of the air conditioning system is improved, so that the heating effect of the air conditioning system can be improved when the air conditioning system executes the heating mode.