Turbocharger Sealing Structure Segmentation Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing sealing structure for turbochargers requires complex assembly steps due to the need for elastic deformation of the sealing ring to fit into a receiving groove, which complicates the workability and may lead to deterioration of the sealing ring under increased pressure ratios.
Innovation Solution
A sealing structure featuring a sealing plate with an insertion hole, a sealing ring, a first rotating body positioned inside the hole, and a second rotating body with a larger outer diameter forming an annular receiving groove for the sealing ring, allowing for improved assembly workability and reduced deformation requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealing ring is fitted into the receiving groove by elastic deformation, then the sealing ring can be installed, but the assembly work becomes complicated and the sealing ring deteriorates under increased pressure ratios
Solution Approach 1:
The oil thrower member is divided into two separate members (first oil thrower member and second oil thrower member) along the axial direction. The sealing ring is installed on the shaft first, then the first oil thrower member is fitted, followed by the second oil thrower member. This segmentation eliminates the need for elastic deformation of the sealing ring, simplifying the assembly process while maintaining sealing reliability.
Solution Approach 2:
The sealing ring is preliminarily installed on the shaft before the oil thrower members are fitted. This preliminary action allows the sealing ring to be in place and properly positioned before the oil thrower members are assembled, eliminating the need for complex elastic deformation fitting and reducing assembly complexity.
2Ease of manufacture
If the oil thrower member is divided into two members, then the sealing ring can be inserted without interference, but the device structure becomes more complex
Solution Approach 1:
The oil thrower member is segmented into two parts (first and second oil thrower members) that can be assembled sequentially. This segmentation enables the sealing ring to be installed first without interference, improving workability. The two members are simple in individual structure, so the overall structural complexity increase is minimal compared to the gain in ease of manufacture.
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 enhances the workability of assembling the sealing ring while suppressing its deterioration and improving the sealing property by restricting axial movement and reducing abrasion.
Implementation Method 1
an abutment joint for facilitating elastic deformation of the sealing ring in a radial direction
Data Source
AI summary
A sealing structure includes: an insertion hole formed in a sealing plate; a sealing ring provided in the insertion hole; a first rotating body provided to the shaft, at least a part of the first rotating body positioned inside the insertion hole; a second rotating body disposed at a position apart from the compressor impeller than the first rotating body and having a maximum outer diameter larger than a minimum inner diameter of the insertion hole; and an annular receiving groove formed by the first rotating body and the second rotating body and receiving an inner circumferential surface side of the sealing ring.