Slide Valve Assembly for Screw Compressor Output Control
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Solution Overview
Problem
Helical screw compressors face challenges in efficiently managing the output volume of compressible fluids to match varying system demands, leading to potential overpressurization and inefficiencies in power consumption.
Innovation Solution
A helical screw compressor with a slide valve assembly that allows for variable control of the output volume by positioning a valve plate to fully open, fully closed, or intermediate positions, enabling precise regulation of fluid flow through vent channels, thereby adjusting the volume of pressurized fluid output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed output volume is used in helical screw compressors, then the compressor operates continuously at full capacity, but this leads to overpressurization and inefficiency when system demand is reduced
Solution Approach 1:
The patent applies a slide valve assembly that can dynamically adjust the output volume of the compressor by moving between different positions (fully open, fully closed, intermediate). This dynamic adjustment allows the compressor to match its output to varying system demands, preventing overpressurization and reducing energy waste during low-demand periods while maintaining full capacity when needed.
2Adaptability or versatility
If a slide valve assembly with multiple positions is implemented, then variable output control is achieved, but the device complexity increases
Solution Approach 1:
The slide valve assembly is segmented into distinct functional zones with different opening areas, allowing independent control of fluid flow paths. The valve plate is divided into multiple regions that can be selectively opened or closed, enabling discrete output levels (fully open, fully closed, intermediate positions) without requiring a completely complex control mechanism.
3Productivity
If the valve plate is positioned to control fluid flow through vent channels, then output volume is regulated, but the sealing requirements increase
Solution Approach 1:
The valve plate incorporates localized sealing features at critical interfaces where it contacts the housing and where it seals against the vent channels. Different regions of the valve plate have specialized sealing surfaces tailored to their specific functions, ensuring reliable sealing at each location without requiring uniform sealing across the entire valve assembly, thus maintaining productivity while addressing reliability concerns.
Data Source
AI summary
An assembly of a compressor for pressurizing a fluid includes a main housing having a portion being substantially planar. The housing defines at least two parallel intersecting bores. At least two rotors are journaled for rotation within the bores. A plurality of vent channels in the main housing extend outwardly from at least one bore through the portion being substantially planar. The vent channels are configured for the fluid to flow through the vent channels. A slide valve assembly is operably connected to the housing proximate the plurality of vent channels. The slide valve assembly has a valve plate wherein the valve plate has a substantially planar side that is sealingly engaged with the planar portion of the main housing. The valve plate is positioned into one of a plurality positions relative to the vent channels.