Screw Compressor Casing Cooling Paths With Horizontal Ribs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing screw compressors face inefficiencies in cooling efficiency due to the flow rate and flow velocity of cooling liquid in the delivery-side cooling flow path, which is not optimally managed.
Innovation Solution
The introduction of horizontal ribs in the male- and female-rotor-side cooling flow paths to control the inflow of cooling liquid, combined with a specific inlet and outlet configuration to enhance cooling efficiency by adjusting flow rates and reducing thermal expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the flow rate and flow velocity of cooling liquid in the delivery-side cooling flow path are increased to increase cooling efficiency, then cooling efficiency is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The cooling flow path is segmented into multiple parallel paths (delivery-side cooling flow path, male-rotor-side cooling flow path, female-rotor-side cooling flow path, and intake-side cooling flow path), allowing independent flow control and optimization of cooling distribution without increasing overall system complexity
Solution Approach 2:
Horizontal ribs are selectively provided in specific locations (male-rotor-side cooling flow path and female-rotor-side cooling flow path) to create localized flow resistance and control cooling liquid distribution, rather than uniformly modifying the entire system
2Temperature
If horizontal ribs are provided in the cooling flow paths to control cooling liquid inflow, then cooling efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
The horizontal ribs are integrated directly into the casing structure as part of the cooling flow path formation, combining multiple functions (structural support, flow control, and cooling channel definition) into a single manufacturing process, thereby avoiding additional manufacturing steps
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
This configuration increases cooling efficiency by optimizing the flow rate of cooling liquid, thereby enhancing the cooling capability around the delivery flow path and reducing thermal expansion.
Implementation Method 1
a casing cooling flow path that is formed in the casing and through which cooling liquid flows
Implementation Method 2
the delivery flow path can efficiently be cooled
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a screw compressor capable of increasing cooling efficiency. A casing cooling flow path 12 of the screw compressor includes a delivery-side cooling flow path 13 formed on an upper side of a casing 4 and over an entire outer circumference of a delivery flow path 11, a male-rotor-side cooling flow path 14 that is formed on one side in a horizontal direction of the casing 4 and into which a cooling liquid flows from the delivery-side cooling flow path 13, a female-rotor-side cooling flow path 15 that is formed on an opposite side in the horizontal direction of the casing 4 and into which the cooling liquid flows from the delivery-side cooling flow path 13, a horizontal rib 22 that is provided to the male-rotor-side cooling flow path 14 so as to extend in a rotor shaft direction and suppresses the inflow of the cooling liquid from the delivery-side cooling flow path 13 to the male-rotor-side cooling flow path 14, and a horizontal rib 23 that is provided to the female-rotor-side cooling flow path 15 so as to extend in the rotor shaft direction and suppresses the inflow of the cooling liquid from the delivery-side cooling flow path 13 to the female-rotor-side cooling flow path 15.