Volumetric Screw Compressor Integrated Body Design
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Solution Overview
Problem
Volumetric screw compressors face challenges due to construction complexity, leading to high production and maintenance costs, limited reliability, and inefficiencies from pressure drops along fluid flow channels, resulting in large dimensions and reduced efficiency.
Innovation Solution
A gas compression device with integrated gas and liquid conveying elements in a single main body, featuring a compact design with channels for fluid flow within the main body, reducing the need for external ducts and minimizing pressure drops, and incorporating a thermostatic valve and filter system for efficient oil recirculation and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate external ducts and components are used for conveying gas and liquid flows, then the compressor can handle complex fluid flow paths, but the device complexity increases and pressure drops occur
Solution Approach 1:
The patent integrates the compression chamber, separation tank, and recirculation circuit into a single main body structure. The compression chamber is defined within the main body, the separation tank is formed as an integral part of the main body, and recirculation channels are built into the main body. This merging of previously separate components eliminates the need for external ducts and reduces the number of parts, directly resolving the contradiction between handling complex fluid flows and maintaining simple construction.
2Reliability
If multiple separate components and ducts are used for oil recirculation and separation, then the compressor can effectively separate and recirculate oil, but the production cost and assembly time increase
Solution Approach 1:
The separation tank and recirculation circuit are integrated into the main body as integral structures. The recirculation channels are built directly into the main body, eliminating the need for separate external ducts and connections. This integration reduces the number of parts that need to be manufactured and assembled, directly lowering production costs and assembly time while maintaining effective oil separation and recirculation functionality.
3Reliability
If a large separation tank is used to effectively separate oil from compressed air, then the separation efficiency improves, but the overall dimensions and weight of the compressor increase
Solution Approach 1:
The separation tank is nested within the main body structure, utilizing the internal volume of the integrated housing. The recirculation circuit is also integrated within the main body, with channels built into the structure. This nesting approach allows the separation tank to be sufficiently large for effective oil-gas separation while containing the overall dimensions and weight of the compressor, as the tank is part of the compact integrated structure rather than an external addition.
4Productivity
If external ducts and channels are used for fluid conveyance, then the compressor can transport gases and liquids, but pressure drops occur along the channels reducing efficiency
Solution Approach 1:
The recirculation channels are built directly into the main body, creating integrated flow paths that eliminate external ducts and connections. The compression chamber, separation tank, and recirculation circuit form a unified structure with continuous internal channels. This integration minimizes the length and number of bends in the fluid pathways, reducing friction losses and pressure drops while maintaining effective fluid conveyance capability.
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 solution enhances compressor efficiency, reduces size and weight, improves reliability, and simplifies maintenance and production processes, while allowing for easier adaptation to different power ranges and dimensions.
Implementation Method 1
a thermostatic valve (10) carried out in a single piece with said main body (30)
Implementation Method 2
a filter (12) accommodated in a supporting seat (55) carried out in a single piece with said main body (30)
Implementation Method 3
The compression of the air-oil mixture takes place in the volume included between the toothing of the two rotors and the casing
Implementation Method 4
Inside the tank the separated oil particles are deposited on the bottom of the tank, while the compressed air remains in the upper portion of the same
Data Source
Figure 1
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AI summary
The present invention concerns a compression device (1) suited to compress a gas, of the type comprising: a main body (30; 130, 230; 330) suited to define a compression chamber (2) provided with an inlet (32) for the gas; a liquid for compressing the gas, suited to be injected in the compression chamber (2) to create a mixture comprising the liquid and the gas; compression means (21, 22) arranged in the compression chamber (2) and suited to compress the mixture towards an outlet (50) of the compression chamber (2); separation means (7), arranged downstream of the outlet (50), suited to receive the mixture and to separate the liquid and the gas that are included in the mixture; connection means (51) suited to connect the outlet (50) to the separation means (7). Said connection means (51) comprise at least one connection channel made at least partially in said main body (30; 130, 230; 330).