Revolving Outer Body Rotary Vane Compressor Eccentric Rotor Design
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Solution Overview
Problem
Conventional rotary vane compressors and expanders face issues such as friction, wear, premature vane slot deterioration, low mass flow rate requirements, and inefficiencies in gas turbine engines and internal combustion engines, leading to reduced performance and reliability.
Innovation Solution
A rotatable vane mechanism hinged to both a rotatable cylindrical housing and a rotor, with an eccentrically placed rotor and a single rocking arm vane, forming working chambers that minimize friction and wear, allowing for high torque and efficient operation with low mass flow rates, and capable of handling high temperature and pressure fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sliding vane mechanism is used in rotary compressors and expanders, then the device can achieve basic compression and expansion functions, but friction and wear are generated causing premature vane slot deterioration and reduced reliability
Solution Approach 1:
The patent replaces the conventional sliding vane mechanism with a pivoting vane mechanism that rocks between two pivots. This substitution eliminates the sliding friction between the vane and vane slots, thereby preventing wear and deterioration of the vane slots while maintaining the compression and expansion functions.
Solution Approach 2:
The vane is designed to rock dynamically between two pivots during rotation, rather than sliding statically in a fixed slot. This dynamic rocking motion allows the vane to maintain contact with the rotor surface without generating frictional wear, thereby improving reliability and extending component life.
2Quantity of substance
If a partial admission turbine is used to reduce mass flow rate requirements, then the device becomes suitable for conjunction with power systems, but friction and wear still occur in conventional vane mechanisms
Solution Approach 1:
The patent applies the pivoting vane mechanism with rocking motion to partial admission turbines, replacing the conventional sliding vane mechanism. This substitution eliminates friction and wear while maintaining the low mass flow rate capability that makes partial admission turbines suitable for conjunction with power systems like gas turbines and internal combustion engines.
3Productivity
If vanes slide back and forth in slots during operation, then compression and expansion functions are achieved, but considerable friction heat and wear are generated reducing performance
Solution Approach 1:
The patent replaces the sliding motion with a pivoting rocking motion. The vane rocks between two pivots as the rotor rotates, eliminating the sliding friction that generates heat. This substitution maintains the compression and expansion efficiency while significantly reducing energy loss to friction heat.
Solution Approach 2:
The patent converts the potential harmful sliding friction into a beneficial pivoting rocking motion. The rocking motion allows the vane to follow the rotor surface contours without sliding, transforming what would be a harmful frictional interaction into a low-friction pivoting action that actually improves efficiency.
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 solution provides a friction-free and wear-free vane mechanism that achieves high compression ratios, efficient power generation, and reliable operation with reduced pressure and mass flow leakage, enhancing the performance and longevity of rotary vane components in engines.
Implementation Method 1
a rotatable housing receives an eccentrically placed rotor equipped by a single rocking arm vane, all arranged around a fixed keyed eccentric shaft main axis
Implementation Method 2
Between some implementations the housing and the rotor, depending on the rotational position of rotatable vane, forms a single or a plurality of working chambers each of the chambers, delimited by inner cylindrical peripheral surface of housing, the outer peripheral surface of the rotor and side surfaces of vane
Implementation Method 3
Some friction-free and wear-free vane mechanism resemble the reliable rolling piston type rotary vane compressors and expanders widely used in the refrigeration industry for decades
Data Source
AI summary
Some implementations of this invention relate to energy systems and more particularly to rotating componentry enabling shaft work, propulsion drive, electric power generation, jet propulsion and/or thermodynamic systems related to aerothermodynamic thrust and shaft power, waste heat recovered shaft power, ventilation, cooling, heat, pressure and/or vacuum generating devices. Some implementations pertain to the art of vane assemblies for eccentrically placed rotating partial admission compressors and expanders that may either be used together or in conjunction with other mechanical, electrical, hydraulic and/or pneumatic machineries. Some implementations further relate to fluid energy recovery mechanical devices, targeting the field of gas turbine engines, internal combustion engines, furnaces, rotary kilns, coolers and refrigeration rotary components and/or expansion nodes. Other implementations are described.