Suction Casing Radial Width Variation for Fluid Uniformity
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Solution Overview
Problem
Existing fluid machines face challenges in uniformly supplying fluid in the circumferential direction, leading to increased axial dimensions and vibration issues due to non-uniform fluid distribution.
Innovation Solution
A suction casing design with a narrower radial width in the circumferential direction and strategically placed partitioning blades guides the fluid closer to the inlet opening, preventing direct flow into the inlet and ensuring uniform distribution, allowing for a smaller axial dimension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the chamber is made larger in the axial direction to ensure uniform fluid distribution, then the fluid uniformity in the circumferential direction is improved, but the axial dimension of the fluid machine increases
Solution Approach 1:
The invention changes the design approach from axial dimension adjustment to radial width adjustment. By making the radial width of the chamber narrower in the circumferential direction from the joint portion, the patent achieves uniform fluid distribution without increasing the axial dimension, thus resolving the contradiction through dimensional substitution.
Solution Approach 2:
The patent applies local quality by varying the radial width of the chamber at different circumferential positions. The radial width is made narrower from the joint portion toward the opposite side, creating localized geometric variations that guide fluid flow and ensure uniform distribution without requiring overall chamber enlargement.
2Length of moving object
If the radial width of the chamber is made narrower in the circumferential direction to reduce axial dimension, then the axial size is reduced, but it becomes difficult to ensure uniform fluid distribution
Solution Approach 1:
The patent substitutes axial dimension adjustment with radial width adjustment. By controlling the radial width variation in the circumferential direction, the invention achieves compact axial dimensions while maintaining uniform fluid distribution through carefully designed radial geometry.
Solution Approach 2:
The patent incorporates partitioning blades in advance within the chamber to pre-guide the fluid flow before it reaches the inlet opening. These blades are positioned to divide and redirect fluid, ensuring uniform distribution is achieved proactively through the narrowed radial width configuration.
3Stability of the object's composition
If partitioning blades are added to guide fluid flow uniformly, then fluid distribution uniformity is improved, but the device complexity increases
Solution Approach 1:
The patent divides the chamber into multiple sections using partitioning blades arranged in the circumferential direction. These blades segment the fluid flow path, guiding fluid from the joint portion uniformly toward the inlet opening, thereby achieving uniform distribution through systematic division of the flow domain.
Solution Approach 2:
The partitioning blades are designed with curved surfaces that follow the circumferential flow pattern. The curved geometry of the blades and chamber walls guides fluid smoothly around the circumferential direction, reducing flow separation and enhancing uniformity without requiring complex angular or irregular shapes.
Data Source
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AI summary
A suction casing of the present invention includes: a suction nozzle that introduces a fluid from an outer circumferential side to an inner circumferential side in a radial direction; and a chamber that includes a substantially doughnut-shaped space in communication with an inside of the suction nozzle on the outer circumferential side and that guides the fluid, introduced from the suction nozzle, to an inlet opening portion opening in an axial direction and disposed in a substantially annular shape, in which the chamber is formed so that a radial width is narrower in a circumferential direction from a joint portion in communication with the suction nozzle to an opposite side across a central axis.