Lobed Piston Compressor Circular Translation
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Solution Overview
Problem
Existing reciprocating compressors face inefficiencies in fluid compression and mechanical power generation due to limitations in fluid flow resistance and seal integrity, particularly in the interaction between the piston and chamber walls with arcuate surfaces.
Innovation Solution
A device featuring a lobed chamber with arcuate segments and a corresponding lobed piston, where the piston translates along a circular path forming fluid-tight seals, and a transportation plate controls fluid release through strategically positioned holes to manage pressure and compression ratios, reducing fluid flow resistance and enhancing mechanical power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a reciprocating piston is used in a conventional compressor, then fluid compression is achieved, but fluid flow resistance increases and compression efficiency decreases
Solution Approach 1:
The piston is designed with a circular cross-section and translates along a circular path rather than reciprocating linearly. The arcuate segments on the piston surface and chamber wall create smooth curved flow paths for the fluid, eliminating sharp corners and abrupt direction changes that cause turbulence and flow resistance. This curved geometry maintains continuous fluid flow while achieving compression.
Solution Approach 2:
The piston motion is changed from traditional reciprocating linear motion to circular translational motion. The piston continuously moves along a circular trajectory within the lobed chamber, maintaining dynamic contact with the chamber wall through arcuate surface engagement. This dynamic circular motion creates continuously varying enclosed volumes for compression while reducing flow resistance compared to abrupt linear reciprocation.
2Reliability
If arcuate surfaces are used between piston and chamber wall, then fluid-tight seal is formed, but manufacturing complexity increases
Solution Approach 1:
Both the piston and chamber wall are divided into multiple arcuate segments that collectively form the complete circular cross-section. Each segment is a discrete manufacturing component that can be produced separately using standard machining processes, then assembled to form the complete lobed structure. This segmentation makes the complex curved surfaces manufacturable while maintaining seal integrity through the continuous arcuate contact between segments.
Solution Approach 2:
The arcuate segments serve multiple functions simultaneously: they form the geometric shape of the lobed chamber and piston, create the fluid-tight sealing surfaces through continuous tangential contact, and define the compression chambers. This multi-functionality reduces the need for additional sealing components while maintaining reliability.
3Object-generated harmful factors
If the piston translates along a circular path, then fluid flow resistance is reduced, but device complexity increases
Solution Approach 1:
The lobed chamber and lobed piston are designed as complementary structures where the lobes of one fit within the lobes of the other. The arcuate segments of the piston are merged with the arcuate segments of the chamber wall to form continuous sealing surfaces. This merging creates the circular translation path and reduced flow resistance while using the same structural elements for multiple purposes, rather than adding separate complexity-reducing components.
Data Source
AI summary
Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation and forming a fluid-tight seal between some portions of the outer surface of the piston and the inner surface of the chamber wall such that enclosed spaces are formed between the piston and the chamber wall.