Rotary Variable Volume Machine Torque and Vibration Control
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Solution Overview
Problem
Rotary and reciprocating machine systems have limitations in torque and efficiency at varying speeds, with rotary systems lacking torque at low rpm and generating vibrations at higher speeds, while reciprocating systems suffer from batch displacement phenomena and reduced efficiency.
Innovation Solution
A rotary machine design that employs a positive displacement mechanism, allowing continuous variation of volume in all three dimensions using two discs with complementary contours, enabling simultaneous suction and compression operations, and potentially used as a pump, compressor, turbine, or rotary internal combustion engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If rotary centrifugal systems are used, then continuous operation is achieved, but torque at low rpm is insufficient
Solution Approach 1:
The rotor is segmented into multiple chambers that perform different functions (suction, compression, expansion, exhaust) at different angular positions. This segmentation allows the system to maintain continuous rotation while each chamber undergoes discrete volume changes to generate torque, resolving the contradiction between continuous operation and low-speed torque.
Solution Approach 2:
The invention employs dynamic volume change within rotating chambers through the interaction of the rotor with stator elements. The chamber volume varies continuously during rotation, enabling positive displacement action that generates high torque at low rpm while maintaining continuous rotational motion, thus resolving the contradiction between continuous operation and torque production.
2Object-affected harmful factors
If rotary centrifugal systems are used, then low vibrations and noise are achieved, but efficiency falls at lower or higher than optimum rpm
Solution Approach 1:
Multiple chambers operate simultaneously at different stages of the compression cycle, ensuring that useful action continues without interruption throughout the rotation. This continuous positive displacement action maintains high efficiency across a wide rpm range while preserving the low vibration and noise characteristics of rotary motion.
Solution Approach 2:
The invention changes the operational parameters by using variable chamber volume achieved through rotor-stator interaction. This allows the system to adapt to different operating conditions and maintain high efficiency across varying rpm ranges, while the rotary mechanism itself continues to provide low vibrations and noise.
3Force
If reciprocating piston systems are used, then good torque at small speeds is achieved, but batch displacement phenomenon reduces efficiency
Solution Approach 1:
The reciprocating piston is replaced by a segmented rotor with multiple chambers operating in sequence. Each chamber performs a complete compression cycle, but multiple chambers work simultaneously to provide continuous rather than batch displacement, maintaining high torque at small speeds while improving productivity through continuous operation.
Solution Approach 2:
The invention transforms the batch displacement of reciprocating systems into continuous displacement by using multiple chambers that operate at different phases of the compression cycle. As one chamber completes its cycle, another is already in progress, ensuring continuous useful action and eliminating the idle periods characteristic of batch operations.
4Force
If reciprocating piston systems are used, then positive displacement mechanism is achieved, but vibrations at higher speeds hinder functioning
Solution Approach 1:
Instead of moving the piston back and forth to change volume, the invention inverts the approach by keeping the chamber boundaries stationary relative to the rotor and using the rotor's rotation itself to create volume changes through interaction with stator elements. This eliminates the reciprocating motion that causes vibrations at high speeds while maintaining positive displacement.
Solution Approach 2:
The invention uses dynamic volume change achieved through the rotational motion of the rotor and its interaction with stator elements, rather than static reciprocating motion. This dynamic approach maintains positive displacement capability while enabling smooth operation at higher speeds without the vibrations characteristic of reciprocating systems.
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 machine achieves high torque at both low and high rpm with reduced vibrations and noise, efficient energy conservation, and eliminates the need for a clutch system, offering improved thermal efficiency and versatility in applications.
Implementation Method 1
by using positive displacement mechanism, increases and decreases the volume of the enclosed space in all the three dimensions, continuously and simultaneously
Implementation Method 2
The rotary ones generally use continuous centrifugal force to do the work (displacement or compression of fluids etc.)
Data Source
AI summary
An embodiment may have two rotary discs including a second disc (a cap) and a first disc; and a rotary ‘cam’ (having ports) placed in the central hole of the first disc. A cap is half the diameter of the first disc. Both face each other and maintain contour complementarity during both of two modes of operation The cap seals the cavity underneath, and without jeopardizing the sealing, permits entry and exit of the radial ridges and furrows of the first disc into it. The ridges sweep the floor (under surface) of the cap and divide the cavity into variable volume compartments that suck and expel fluid simultaneously through the ‘cam’. The machine is designed to work as rotary pump, compressor, turbine or internal combustion engine.