Modular Regenerative Compressor Architecture for Multi-Stage Compression
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Solution Overview
Problem
Existing heat-actuated regenerative compressors are limited by their single-stage design, leading to low compression rates and increased complexity and cost when multiple stages are required, with mechanical synchronization issues and maintenance challenges.
Innovation Solution
A modular compressor architecture with multiple stages, utilizing a piston assembly and regenerative heat exchanger to optimize heat transfer and synchronization, allowing for configurations of one, two, or four stages with common components, and a self-sustaining drive system to reduce mechanical losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple single-stage compressors are placed in series to achieve significant compression rate, then the compression rate is improved, but the device complexity and cost increase due to mechanical synchronization mechanisms
Solution Approach 1:
The compressor is divided into multiple independent stages (first stage with first and second chambers, second stage with third and fourth chambers) that share a common piston assembly. Each stage has its own communication lines and regenerative heat exchangers, allowing independent operation without mechanical synchronization between stages.
Solution Approach 2:
A single piston assembly serves multiple functions by simultaneously separating chambers in both the first and second stages. The common piston assembly displaces fluid in all chambers alternately towards heating or cooling means, eliminating the need for separate pistons and synchronization mechanisms for each stage.
2Productivity
If multiple single-stage compressors are placed in series to achieve significant compression rate, then the compression rate is improved, but the manufacturing cost increases
Solution Approach 1:
Multiple compression stages are merged into a single integrated device sharing common components including the piston assembly, main enclosure, and regenerative heat exchanger. This consolidation reduces the total number of parts, simplifies manufacturing, and lowers cost compared to assembling multiple separate single-stage compressors.
Solution Approach 2:
The common piston assembly and regenerative heat exchanger serve multiple stages simultaneously, reducing the total component count and manufacturing cost while achieving multi-stage compression functionality.
3Productivity
If mechanical synchronization mechanisms are added to coordinate multiple compressors, then the compression rate is improved, but the reliability decreases due to fluidtight seal failure risks
Solution Approach 1:
The mechanical synchronization mechanism is completely extracted from the system. Instead of using mechanical linkages between separate compressors, the invention uses a single piston assembly that naturally coordinates fluid displacement in all chambers through its alternating motion, eliminating synchronization mechanisms and their associated seal failure risks.
Solution Approach 2:
The common piston assembly self-coordinates the compression cycles of all stages through its inherent alternating displacement motion. The system uses the thermal energy from the regenerative heat exchanger to drive the compression process without external mechanical synchronization, making the system self-regulating and more reliable.
4Productivity
If the number of mechanical elements is increased to achieve multi-stage compression, then the compression rate is improved, but the mechanical losses increase
Solution Approach 1:
Multiple compression stages are achieved by merging functions into a single piston assembly rather than using separate mechanical systems. This reduces the number of moving parts, connections, and mechanical interfaces, thereby minimizing mechanical energy losses while maintaining multi-stage compression capability.
Solution Approach 2:
The invention replaces traditional mechanical compression systems with a heat-actuated regenerative system. The regenerative heat exchanger captures and reuse thermal energy from the compression process, reducing the mechanical work required and minimizing mechanical energy losses while achieving significant compression rates.
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 modular design enhances compression efficiency, reduces maintenance needs, and simplifies implementation by allowing flexible stage configurations while maintaining high heat yield and minimizing mechanical failures.
Implementation Method 1
at least one regenerative heat exchanger arranged circumferentially around the sleeve and establishing a fluid communication between the first and second chambers
Implementation Method 2
at least one first chamber, thermally coupled to a heat source adapted for adding heat energy to the gaseous fluid
Implementation Method 3
at least one second chamber, thermally coupled to a cold source in order to transfer heat energy from the gaseous fluid to the cold source
Implementation Method 4
at least one piston assembly mounted in a cylindrical sleeve so as to move in an axial direction and separating the first chamber and second chamber
Data Source
Figure 1~2
Figure 3a~4
Figure 5~6
AI summary
Modular device for compressing gaseous fluid, comprising a first stage (E1) with a first hot chamber (E11), a second cold chamber (E12), a piston assembly (7) separating the first and second chambers inside a main enclosure, a regenerative heat exchanger (9) establishing a fluid communication between the first and second chambers by means of at least a first communication line (F1), and optionally third and fourth chambers (E21, E22) separated by a fixed divider (61) separating the third and fourth chambers placed in communication by a second communication line (F2). It thus proposes a compressor with one, two, or four stages based on a modular architecture with common components.