Rotary Fluid-Displacement Assembly Gate Eccentric Motion
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Solution Overview
Problem
Conventional vane-type fluid displacement apparatuses face issues such as high friction, inability to withstand bending forces, reliance on discrete check valves, and inability to accommodate simultaneous reciprocating flow, limiting their efficiency and operational costs.
Innovation Solution
A rotary fluid-displacement assembly with a gate that moves in relation to an eccentric cam, minimizing friction and allowing for efficient compression of fluids without the need for eccentric shafts or separate valve systems, using a purely rotational design with sealing elements to manage fluid flow and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vane-type apparatuses use a large fixed-surface to moving-surface contact area, then sealing is improved, but friction increases
Solution Approach 1:
The patent applies the dynamics principle by making the contact surface between the vane and housing movable rather than fixed. The vane is configured to move radially within the housing, allowing the contact area to dynamically adjust during rotation. This dynamic contact reduces friction while maintaining sealing effectiveness, as the vane can adapt its position to minimize resistance while preserving the necessary seal against the housing surface.
2Ease of operation
If conventional vane-type apparatuses use discrete check valves, then flow control is achieved, but device complexity increases
Solution Approach 1:
The patent merges the flow control function into the rotor-vane assembly itself, eliminating the need for separate discrete check valves. The vanes are configured to automatically control fluid flow directions through their geometric arrangement and interaction with the housing, combining multiple functions (sealing, flow control, and compression) into a single integrated component system. This reduces overall device complexity while maintaining effective flow management.
3Loss of energy
If conventional vane-type apparatuses are designed for moderate power levels, then friction losses are acceptable, but power transmission capability is limited
Solution Approach 1:
The patent changes key geometric parameters of the vane and housing contact interface to optimize for higher power transmission. By adjusting the vane angle, contact surface area, and radial clearance parameters, the design achieves reduced friction losses while maintaining the capability for high power transmission. The parameter optimization allows the system to operate efficiently at higher power levels without excessive frictional energy loss.
4Power
If conventional vane-type apparatuses use eccentric shafts, then compression is achieved, but bending forces on crankshaft increase
Solution Approach 1:
The patent extracts and eliminates the eccentric shaft mechanism from the design. Instead of using a traditional eccentric crankshaft configuration that generates bending forces, the invention employs a rotor with vanes that rotate within a housing, achieving compression through the radial movement of the vanes themselves. This extraction of the eccentric shaft component removes the source of bending forces while maintaining effective compression capability through the alternative rotor-vane mechanism.
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 rotary fluid-displacement assembly achieves reduced friction, improved efficiency, and lower operational costs, enabling efficient compression and flow management with a lighter construction and reduced noise and vibration.
Implementation Method 1
a gate having a distal end, the gate being slidably mounted within the rotor and translates radially relative to the rotor about and between a first position, in which the distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor
Implementation Method 2
a rotor having a peripheral surface and being positioned within the internal cavity of the housing, the rotor configured to rotate about a rotor axis of rotation eccentric to the housing longitudinal axis
Implementation Method 3
The rotary fluid-displacement assembly achieves reduced friction, improved efficiency, and lower operational costs, enabling efficient compression and flow management
Data Source
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AI summary
A rotary fluid-displacement assembly having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation.