Compressor Cooling Guide Member Noise Reduction
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Solution Overview
Problem
The existing cooling devices for centrifugal compressors generate noise due to fluid collisions with internal members, leading to resonance and noise issues.
Innovation Solution
A cooling device with a hollow shell, an inlet nozzle, an outlet nozzle, and a guide member with an inclined collision surface and uneven peripheral edge portions to alter the fluid flow direction and reduce swirl generation, thereby minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the fluid flows directly into the shell from the inlet nozzle, then the cooling function is achieved, but the fluid collides with the cooler inside the shell causing noise and resonance
Solution Approach 1:
The guide member acts as an intermediary component between the inlet nozzle and the cooler. It redirects the fluid flow so that the fluid does not directly collide with the cooler, thereby reducing noise and resonance while still achieving the cooling function through the cooler
Solution Approach 2:
The guide member changes the flow direction from a direct linear path to an inclined path by utilizing the inclined collision surface. This dimensional change in flow direction prevents direct collision with the cooler while maintaining cooling effectiveness
2Object-affected harmful factors
If the fluid collides with the cooler inside the shell, then cooling is achieved, but swirl is generated causing resonance and noise
Solution Approach 1:
The guide member serves as a mediator that redirects fluid flow before it reaches the cooler. By changing the flow direction through the inclined collision surface, it prevents the generation of harmful swirl while maintaining effective cooling through the cooler
Solution Approach 2:
The guide member is positioned specifically at the inlet area where fluid flow needs redirection. The inclined collision surface is locally designed to change flow direction without interfering with the overall cooling process, addressing the swirl issue locally while preserving cooling efficiency
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 effectively suppresses noise generation by changing the fluid flow direction and reducing swirl strength, enhancing the operational silence of the cooling device and compressor system.
Implementation Method 1
The guide member has a collision surface which spreads in an inclined direction inclined with respect to the flowing direction of the fluid fed into the shell from the inlet nozzle, and which collides with the fluid
Implementation Method 2
The fluid flowing into the shell is cooled by heat exchange with a refrigerant in the cooling unit
Data Source
AI summary
A cooling device includes a cooler disposed inside a shell, an inlet nozzle that is configured to feed a fluid into the shell, an outlet nozzle that is configured to feed the fluid passing through the cooler so as to flow outward, and a guide member that is configured to change a flowing direction of the fluid. The guide member has a collision surface which spreads in an inclined direction inclined with respect to the flowing direction of the fluid fed into the shell from the inlet nozzle, and which collides with the fluid, and an uneven portion formed in at least a portion of a peripheral edge portion of the collision surface.