Screw Compressor Volume Ratio Adjustment via Nested Cylinder Elements
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Solution Overview
Problem
Screw compressors require a large installation space due to the configuration of their components, which limits their space efficiency.
Innovation Solution
The slider is connected to a first cylinder element that cooperates with a second cylinder element, allowing for a compact arrangement within the screw compressor housing, with the insertion space designed to receive both elements and positioned to minimize overlap with screw rotor bores, and the slider is guided by slider guide surfaces to ensure secure movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the slider is connected to cylinder elements arranged in the insertion space, then the installation space is reduced, but the device complexity increases
Solution Approach 1:
The first and second cylinder elements are nested within the insertion space, with the piston rod connecting the slider to the first cylinder element, and the second cylinder element arranged to cooperate with the first. This nesting arrangement allows the actuation mechanism to be contained within the existing insertion space, reducing the overall installation space while managing the complexity through structured integration.
Solution Approach 2:
The insertion space serves multiple functions: it accommodates the slider during operation and also houses the first and second cylinder elements when the slider is in its retracted position. This multi-functionality allows the same spatial region to serve both operational and actuation purposes, thereby reducing the total installation space required.
2Volume of stationary object
If the insertion space is configured to receive both cylinder elements, then the space efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The actuation system is segmented into a first cylinder element and a second cylinder element, each with specific functions. The first cylinder element contains a piston and piston rod, while the second cylinder element cooperates with it. This segmentation allows for modular manufacturing and assembly, where each component can be manufactured to standard tolerances and then assembled together, managing the overall precision requirements while achieving compact integration.
3Reliability
If the slider is guided by slider guide surfaces, then the reliability of slider movement is improved, but the device complexity increases
Solution Approach 1:
The slider is equipped with slider guide surfaces that automatically guide its movement during operation. These guide surfaces work in conjunction with the cylinder elements to ensure proper alignment and movement without requiring additional external guiding mechanisms. The system uses its own structural features to self-guide the slider, improving reliability while avoiding the need for separate complex guiding devices.
Data Source
AI summary
A screw compressor housing having screw rotor bores, screw rotors, a drive for the screw rotors, and a slider in a slider receptacle for adjusting a volume ratio of the screw compressor and which extends in a direction towards the high-pressure outlet in a guide trough of the slider receptacle that is open towards the screw rotor bores and which is capable of being positioned in a first position and a second position, wherein the volume ratio of the screw compressor is greater in one of the positions than in the other of the positions, the slider connected to a first cylinder element and cooperates with a second cylinder element, the cylinder elements being at least partially arranged in the insertion space and arranged following the slider in the displacement direction thereof on a side of the slider that is opposite the high-pressure outlet.