Turbine Housing Cleaning via Segmented Outer Pipe
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Solution Overview
Problem
The challenge in turbine housing design is the difficulty in removing extraneous matter from the closed space between the inner and outer pipes, as it is hard to access and clean this space effectively.
Innovation Solution
A turbine housing with a double-shell structure that includes an inner pipe forming a spiral exhaust gas flow path and an outer pipe with a designated opening for washing fluid to pass through, allowing for the removal of extraneous matter by supplying and draining washing fluid from a specific port, facilitating the cleaning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a double-shell structure is used to suppress extraneous matter trapping, then structural integrity is improved, but cleaning accessibility deteriorates
Solution Approach 1:
The outer pipe is divided into multiple sections along the exhaust gas flow direction, with each section having independently openable closing members. This segmentation allows selective access to different regions of the closed space for cleaning operations while maintaining the overall double-shell structure's structural integrity.
Solution Approach 2:
A closing member is introduced as an intermediary component that can be opened to provide access to the closed space between inner and outer pipes. This closing member acts as a gateway that maintains structural integrity when closed but enables cleaning access when opened, resolving the contradiction between structural strength and cleaning accessibility.
2Productivity
If a closed space is formed between inner and outer pipes, then exhaust gas flow is improved, but extraneous matter removal becomes difficult
Solution Approach 1:
The closing members are designed to be dynamically openable and closable, transforming the closed space from a static sealed structure into a dynamically accessible one. This allows the space to maintain its closed configuration for optimal exhaust gas flow while enabling access for extraneous matter removal when needed.
Solution Approach 2:
The closing members are positioned and designed to enable preliminary cleaning actions before the turbine housing is fully assembled or before operation begins. This allows extraneous matter to be removed in advance while maintaining the closed space structure for normal operation.
Data Source
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AI summary
A turbine housing (10) is provided with an inner pipe (20) forming a spiral-shaped exhaust gas flow path (K), an exhaust-air-inlet-side flange (12) serving as an exhaust gas inlet to the inner pipe (20), and an outer pipe (40) that, together with the exhaust-air-inlet-side flange (12), covers and seals the inner pipe (20). The outer pipe (40) has an opening (51a) through which the washing fluid can pass through and a closing member (52) that closes the opening (51a), and a space (25) through which the washing fluid can pass through is formed between the inner pipe (20) and the exhaust-air-inlet-side flange (12).