Multiple Vane Roto-Dynamic Kinetic System for Torque Balance
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Solution Overview
Problem
Existing rotary kinematic mechanisms in fluid handling machines face limitations such as unbalanced forces, high torque variations, inefficiencies in energy transfer, and difficulties in compact design, which hinder effective motoring and compactness, leading to suboptimal performance and increased material costs.
Innovation Solution
A multiple vane roto-dynamic variable displacement kinetic system with an intermittent rotor element and stator, featuring a bi-purpose coupling and timing devices that allow for alternating angular positions of vanes to control volume changes, enabling efficient energy transfer and sealing to minimize leakage and friction, while allowing for variable speed ratios and thermodynamic processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single vane per sleeve is used, then the structure is simpler, but out of balance forces occur requiring balancing at a different plane and torque variations are high
Solution Approach 1:
The invention divides the single vane into multiple vanes (at least two) distributed around the rotor per sleeve. This segmentation balances the radial forces acting on the rotor, eliminating the need for additional balancing planes and reducing torque variations during operation.
Solution Approach 2:
The multiple vanes are positioned symmetrically around the rotor to act as counterweights to each other, balancing the out of balance forces that would otherwise require separate balancing mechanisms at different planes.
2Device complexity
If centrally placed shafts are used in torus design, then the structure is simpler, but the surface area to volume ratio cannot be reduced limiting compactness
Solution Approach 1:
The invention moves from a centralized shaft arrangement to a distributed multi-rotor configuration where multiple rotors operate around the torus chamber. This dimensional reorganization allows for more efficient space utilization and reduced surface area to volume ratio, achieving greater compactness.
3Adaptability or versatility
If fluid bleeding arrangements are used for venting, then expansion ratios can be varied, but work loss and efficiency decrease
Solution Approach 1:
The invention employs dynamic control of vane positions and rotor speeds to vary expansion ratios without fluid bleeding. The variable displacement mechanism adjusts the volume changes dynamically during operation, maintaining efficiency while achieving adaptability in expansion control.
4Volume of moving object
If higher degree of compactness is achieved, then total machine volume reduces, but frictional losses increase
Solution Approach 1:
The invention optimizes the geometric parameters of the torus chamber and rotor configuration to achieve compactness while maintaining favorable surface area to volume ratios. By carefully selecting the number of rotors, vanes per rotor, and their dimensional proportions, the system achieves high compactness without excessive frictional losses.
Data Source
AI summary
A multiple vane kinetic system produces variation in an enclosed volume between pairs of radial vane sets independent of each other and coaxial with a central axis within a annular casing that encapsulates the vane sets. The system operates in a sequence where the vane sets function as rotating links of the mechanism for a particular period, which is preceded and succeeded by another period where either vane sets successively alternate between being a fixed link and a rotating link of the mechanism and during the former period the volumes between vanes remain constant as long as the vane sets have equal angular velocities, otherwise varies at rates proportional to differing angular velocities. The two time periods are controlled by timing devices actuating vane sets to be coupled and decoupled with a power shaft and the variation in length of two time periods makes roto-dynamic variable displacement machine.