Screw Compressor Volume Ratio Control for Real-Time Efficiency

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Solution Overview

Problem

Existing screw compressors face inefficiencies due to fixed volume ratios that do not match optimal values under real-time operating conditions, leading to excessive energy consumption and suboptimal performance.

Innovation Solution

A compressor system with a control module that adjusts the volume ratio by comparing evaluation indicators of preceding and following time sequences, allowing the volume ratio to conform to optimal values under real-time conditions, using a control module to drive the volume adjusting group and simplify control logic.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the volume ratio is fixed to satisfy discharge volume demand, then the discharge volume requirement is met, but the compressor performance is suboptimal due to mismatch with real-time operating conditions

Engineering Contradiction:

Improvedischarge volumeVSAvoidenergy consumption

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent implements dynamic volume ratio adjustment by continuously comparing evaluation indicators from preceding and following time sequences, allowing the volume ratio to adapt in real-time to changing operating conditions rather than remaining fixed, thereby optimizing energy efficiency while maintaining productivity

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The control module uses feedback from comparing evaluation indicators of preceding and following time sequences to determine adjustment direction, creating a closed-loop control system that automatically optimizes volume ratio based on real-time performance data, reducing energy loss while maintaining required discharge volume

Inventive Principle:

Principle #23Feedback

2Loss of energy

If the volume ratio is adjusted frequently to match optimal values, then the compressor performance is improved, but the control complexity increases

Engineering Contradiction:

Improveenergy consumptionVSAvoidcontrol logic

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent employs feedback control by comparing evaluation indicators from preceding and following time sequences, where the comparison result directly determines the adjustment direction, creating an intuitive and relatively simple control logic that avoids excessive complexity while achieving continuous optimization

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The control module automatically determines adjustment direction through self-comparison of evaluation indicators without requiring external intervention or complex control algorithms, enabling the system to self-optimize with minimal control complexity

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP4632229A1Compressor and controlling method of volume ratio thereof

Publication Date: 2025.10.15 FUSHENG IND CO LTD

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AI summary

A compressor (100, 100a) and a controlling method of a volume ratio thereof. The compressor includes a body (110), a screw compression group (120), a volume adjusting group (130, 130a), a driving group (140), and a control module (200). The body has an intake end (111) and a discharge end (112) relative to each other. The screw compression group and the volume adjusting group are disposed in the body, corresponding to each other. The driving group is coupled to the volume adjusting group, driving the volume adjusting group to adjust the volume ratio. The control module is electrically connected to the driving group, detecting operation statuses of preceding and following time sequences and recording the same as corresponding evaluation indicators. Based on a comparison result of the evaluation indicators, the control module controls the driving group to drive the volume adjusting group to adjust the volume ratio.