Two-Stage Compressor Passageway Layout for Stable Medium-Pressure Flow
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Solution Overview
Problem
In air conditioner and heat pump systems, the pressure and flow velocity fluctuations in the medium-pressure gas passageway of two-staged enthalpy-increasing compressors lead to reduced working efficiency and energy efficiency ratios, resulting in increased energy consumption due to unequal cross-sectional areas in different sections of the passageway.
Innovation Solution
A compressor design with a medium-pressure gas passageway featuring specific ratios of cross-sectional areas between sections, including a passageway section towards the low-pressure chamber gas discharge and high-pressure chamber gas suction, along with an intermediate section, optimizes the flow velocity and pressure fluctuations, improving the first-stage gas discharge and second-stage gas suction plumpness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cross sectional areas of different sections of the medium-pressure gas passageway are made equal, then the structure is simple, but the flow velocity fluctuation between gas discharge and gas suction increases, reducing compressor efficiency
Solution Approach 1:
The patent applies local quality by making different sections of the medium-pressure gas passageway have different cross-sectional areas. Specifically, the passageway section near the low-pressure chamber discharge has a smaller cross-sectional area than the section near the high-pressure chamber suction, creating localized flow control that reduces velocity fluctuation and improves compression efficiency.
2Stability of the object's composition
If the cross sectional area of the passageway section toward the low-pressure chamber discharge is increased, then the gas discharge plumpness improves, but the flow velocity fluctuation increases, reducing energy efficiency
Solution Approach 1:
The patent applies parameter changes by optimizing the cross-sectional area ratio between different passageway sections to a specific range (1.05-1.3). This parameter optimization simultaneously improves gas discharge plumpness and reduces flow velocity fluctuation, achieving both better compression stability and lower energy consumption.
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 design enhances the energy efficiency ratio and reduces energy consumption by minimizing pressure and flow velocity fluctuations, thereby improving the overall efficiency of the compressor.
Implementation Method 1
the pressure and the flow velocity of the refrigerant in different sections of the medium-pressure gas passageway are different... the flow velocity fluctuation between the gas discharge of the low-pressure compression component and the gas suction of the high-pressure compression component is greater
Data Source
AI summary
Provided is a compressor, an air conditioner system comprising the compressor and a heat pump water heater system. The compressor comprises: a low-pressure compression component, a medium-pressure chamber, a low-pressure chamber gas discharge passageway, an enthalpy-increasing component, a high-pressure compression component, a medium-pressure gas passageway and a high-pressure chamber gas discharge passageway. The medium-pressure gas passageway comprises a passageway section at the side toward the low-pressure chamber gas discharge passageway and a passageway section at the side toward the high-pressure chamber gas suction passageway, wherein a ratio between a minimum cross sectional area of the passageway section at the side toward the low-pressure chamber gas discharge passageway and a minimum cross sectional area of the passageway section at the side toward the high-pressure chamber gas suction passageway is ranged from 1.4 to 4. In the compressor, the pressure fluctuation and the flow velocity fluctuation of the refrigerant are relatively smaller, which can improve the first-stage gas discharge plumpness and the second-stage gas suction plumpness, and increase the gas replenishment volume, thereby improving the working efficiency and the energy efficiency ratio of the compressor, and reducing the energy consumption.