Rotating Piston Compressor Radial Load Compensation
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Solution Overview
Problem
Conventional rotary piston compressors and pumps face issues with one-sided radial loads on shafts and bearings, leading to operational challenges and reduced lifespan due to mechanical surface contact and friction between intermeshing disks, which increases wear and affects tightness.
Innovation Solution
The design features mirror-symmetric piston sections that protrude beyond the disc's outer edge, allowing for non-contact meshing and reducing friction losses, with a modular structure that compensates radial loads through opposing forces, enabling the use of less expensive bearings and allowing for operation without lubrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If two intermeshing rotary pistons or dividing disks are used for compression, then the compression function is achieved, but strong one-sided radial loads act on the shafts and bearings
Solution Approach 1:
The patent employs two rotary pistons with asymmetric radial load characteristics that rotate in opposite directions. By designing the pistons with different radial load distributions (one piston creating outward radial force, the other creating inward radial force), the asymmetric forces counterbalance each other during operation, significantly reducing the net radial load on shafts and bearings while maintaining effective compression function
Solution Approach 2:
The patent implements a counterbalancing mechanism where the second rotary piston acts as a counterweight to the first rotary piston. The opposing rotation and strategically positioned pistons generate counteracting radial forces that neutralize each other, effectively canceling out the harmful one-sided radial loads that would otherwise act on the shafts and bearings
2Power
If mechanical surface contact between intermeshing dividing disks is used, then the compression function is achieved, but friction causes high wear and loss of tightness
Solution Approach 1:
The patent replaces the traditional mechanical surface contact between intermeshing dividing disks with a non-contact magnetic coupling system. Magnets embedded in the rotary pistons create magnetic fields that transmit torque and enable compression without physical contact, eliminating friction and wear while maintaining the compression function
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the two rotary pistons. This magnetic field acts as a mediator that transfers energy and enables the compression function without requiring direct mechanical contact between the pistons, thereby eliminating friction and associated wear
3Power
If conventional rotary piston design with intermeshing disks is used, then compression is achieved, but the structure requires expensive bearings to handle radial loads
Solution Approach 1:
The patent converts the harmful radial loads into a beneficial counterbalancing mechanism. By deliberately designing the system to generate equal and opposite radial forces through the two rotary pistons, the previously harmful loads become a feature that reduces overall stress on bearing components, allowing for simpler and less expensive bearing selections
Data Source
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AI summary
The rotation piston pump or rotation piston compressor has two rotor units that are arranged in a housing with suction- and discharge opening in centrally mounted axially parallel manner, where a rotatable shaft is provided with a rotatably arranged disk (10,14). The disk is circularly formed and has a piston. A cylinder chamber is subdivided by an intermediate ring (3) that is arranged between two adjacent housing components (1,2). The intermediate ring protrudes in an intermediate space between two mirror-symmetrically arranged piston sections (10b,14b).