Liquid-Cooled Screw Compressor Cartridge for Multi-Path Cooling
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Solution Overview
Problem
Existing liquid-cooled screw compressors require complex and time-consuming processing to form multiple oil feed paths, leading to increased processing costs and maintenance challenges while offering limited cooling performance.
Innovation Solution
A liquid-cooled screw compressor design featuring a separate cartridge with liquid feed paths formed by the casing and outer surface, allowing for efficient liquid distribution and collision to enhance cooling performance, with symmetrical jetting flow paths that promote liquid turning into minute particles for improved heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple oil feed paths are formed inside the oil feed nozzle to supply a larger amount of liquid, then the cooling efficiency is improved, but the processing time and cost increase significantly
Solution Approach 1:
The oil feed nozzle is divided into a body portion and a separate insert portion. The insert portion contains the multiple oil feed paths (main oil feed path and sub-oil feed paths) as a separate component that can be manufactured independently and then inserted into the nozzle body, avoiding the need to process complex internal channels within a single monolithic piece.
Solution Approach 2:
The insert portion acts as an intermediary component that bridges the simplified nozzle body and the complex multi-path oil feed system. This intermediary allows the oil feed paths to be formed in a separate manufacturing process and then integrated, reducing the processing complexity of the main nozzle structure.
2Productivity
If multiple oil feed paths are formed inside the oil feed nozzle to supply a larger amount of liquid, then the cooling efficiency is improved, but the manufacturing cost increases
Solution Approach 1:
The oil feed nozzle is segmented into a body portion and a separate insert portion. The insert portion with multiple oil feed paths can be manufactured using standard molding or machining processes independently, and then assembled into the nozzle body, reducing the overall manufacturing complexity and cost compared to forming all paths within a single complex structure.
Solution Approach 2:
The insert portion serves as an intermediary that simplifies the manufacturing process by allowing the complex oil feed path geometry to be created in a separate, more straightforward manufacturing step rather than requiring complex machining or molding of the entire nozzle assembly.
3Device complexity
If the oil feed path for colliding jet flow is directly processed in the casing, then the structure is simpler, but the maintenance performance deteriorates
Solution Approach 1:
The oil feed nozzle is segmented into a removable insert portion and a body portion. The insert portion containing the oil feed paths can be easily removed from the casing for maintenance, cleaning, or replacement, while the casing itself remains a simple, straightforward structure. This segmentation provides both structural simplicity and ease of maintenance.
Solution Approach 2:
The oil feed nozzle transitions from a static, fixed structure to a dynamic, removable assembly. The insert portion can be inserted and removed from the casing, allowing the system to adapt between operational simplicity and maintenance accessibility as needed.
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 design enhances processability and maintenance performance, ensuring effective cooling of compressed gas by promoting liquid film collision and diffusion, thereby improving cooling efficiency and reducing manufacturing costs.
Implementation Method 1
turning liquids to minute particles by causing collision of the liquids supplied to a working space with each other
Implementation Method 2
cooling of a gas in the working spaces by supplying a liquid into the working spaces
Implementation Method 3
promoting liquid film collision and diffusion
Data Source
AI summary
A liquid-cooled screw compressor (100) that takes in a gas and generates a compressed gas includes a screw rotor (2, 3), a casing (1) that stores the screw rotor (2, 3) and forms a working space (C) together with the screw rotor (2,3), and a cartridge (6) that is a separate member from the casing (1). A liquid feed path (7) that supplies a liquid to the working space (C) is formed by the casing (1) and the outer surface of the cartridge (6).