Variable Volume Chamber Using Oscillating Rotors
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Solution Overview
Problem
Variable volume chamber devices, such as piston-type pumps and compressors, are inefficient due to the constant acceleration, deceleration, and reversal of piston motion, which eliminates momentum conservation, and existing superchargers for internal combustion engines are costly, heavy, and require maintenance.
Innovation Solution
The use of oscillating relative motion rotors to define variable volume chambers, allowing momentum preservation through independent or coordinated rotation of rotors with variable-speed drivers, creating a system that enhances fluid pumping or compression efficiency and reduces complexity, weight, and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If piston-type variable volume chamber devices are used, then fluid pumping function is achieved, but efficiency is reduced due to constant acceleration, deceleration, and reversal of piston motion
Solution Approach 1:
The patent applies dynamics by transitioning from reciprocating piston motion to rotating rotor motion. The rotors rotate continuously without reversal, maintaining momentum while dynamically creating variable volume chambers through the relative rotational movement between two rotors. This continuous rotation eliminates the acceleration-deceleration-reversal cycle inherent in piston systems.
Solution Approach 2:
The patent substitutes the traditional piston-cylinder mechanical system with a rotor-based mechanical system. Instead of using pistons that reciprocate within cylinders, the invention uses two rotors that rotate relative to each other, with fluid ports and passages replacing the traditional valve and cylinder mechanisms for controlling fluid flow.
2Power
If traditional superchargers are used to boost air pressure in internal combustion engines, then performance is improved, but cost, weight, and maintenance requirements increase
Solution Approach 1:
The patent extracts the essential function of supercharging (pressure boosting) from the traditional heavy mechanical supercharger design. By using lightweight rotors instead of traditional piston-based or turbine-based supercharger mechanisms, the invention achieves the same power-boosting function with significantly reduced weight and complexity.
Solution Approach 2:
The patent changes the operational parameters from reciprocating motion to continuous rotation, and from single-stage compression to multi-stage compression through multiple variable volume chambers. This parameter change enables effective supercharging with a lighter, more compact rotor-based design.
3Productivity
If piston motion is used to create variable volume chambers, then fluid compression is achieved, but device complexity increases due to constant motion reversal mechanisms
Solution Approach 1:
The patent merges the functions of multiple pistons and cylinders into a single integrated rotor assembly. The two rotors working together create multiple variable volume chambers simultaneously, combining what would traditionally require multiple separate piston-cylinder assemblies into one compact unit with reduced mechanical complexity.
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 approach improves the efficiency of fluid handling by conserving momentum and reducing the need for constant piston motion, resulting in a more efficient and cost-effective supercharger design for internal combustion engines and other fluid applications.
Implementation Method 1
preserve at least some of the momentum built up through repeated compressive and expansive events
Data Source
AI summary
Variable volume chamber devices are disclosed. The chambers may be defined by the space between two complementary rotors. The volume of the chambers may vary as a function of the variation of relative rotational speeds of the two rotors.