Compressor Driving Shaft Internal Refrigerant Flow Channel
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Solution Overview
Problem
Existing swash plate type compressors face reduced suction volumetric efficiency due to flow channel resistance and elastic resistance losses, with uneven refrigerant distribution to cylinder bores, limiting compression performance.
Innovation Solution
A compressor design that inhales refrigerant from the swash plate chamber directly into cylinder bores through a main refrigerant suction flow channel within the driving shaft, simplifying the flow channel structure and omitting the suction reed valve to reduce resistance, while using an auxiliary suction flow channel for uniform refrigerant distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If refrigerant is supplied to cylinder bores through the inside of the driving shaft, then suction volumetric efficiency is enhanced by reducing flow channel resistance loss, but the structure becomes more complex requiring internal flow channel formation in the driving shaft
Solution Approach 1:
The main refrigerant suction flow channel is formed inside the driving shaft, nesting the flow channel within the existing structural component. This eliminates the need for separate external flow channels and suction reed valves, reducing overall device complexity while improving suction volumetric efficiency by minimizing flow path length and resistance
2Productivity
If a suction reed valve is omitted to reduce elastic resistance loss, then suction volumetric efficiency improves, but refrigerant distribution uniformity to cylinder bores deteriorates
Solution Approach 1:
Multiple refrigerant suction outlets are positioned at different locations around the driving shaft circumference, with each outlet serving specific cylinder bores. This localized distribution approach ensures uniform refrigerant supply to all cylinder bores while maintaining the simplified structure without suction reed valve
3Loss of energy
If flow channel structure is simplified by forming channels inside the driving shaft, then loss due to flow channel resistance is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The driving shaft serves dual functions as both a rotational component and a refrigerant distribution manifold. By merging these functions, the patent reduces the number of separate components and assembly steps, thereby reducing overall manufacturing complexity despite the increased precision required for internal flow channel formation
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
Enhances suction volumetric efficiency and compression efficiency by minimizing flow channel and elastic resistance losses, ensuring uniform refrigerant distribution to both sides of the swash plate chamber, and improving lubrication and performance during high-speed rotation.
Implementation Method 1
a main refrigerant suction flow channel formed inside the driving shaft for fluidically communicating the swash plate chamber and the cylinder bores with each other
Implementation Method 2
a compressor for an automobile inhales refrigerant discharged after the refrigerant evaporated in an evaporator, converts it into liquescent refrigerant gas of high-temperature and high-pressure
Data Source
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AI summary
The present invention relates to a compressor, which can inhale refrigerant supplied to a swash plate chamber to cylinder bores through the inside of a driving shaft so that a flow channel structure is simplified, thereby enhancing a suction volumetric efficiency by reducing a loss due to flow channel resistance and elastic resistance, and enhancing a compression efficiency by uniformly distributing refrigerant to the cylinder bores located at both sides of the swash plate chamber.