Radial Compressor Diffuser With Bent Channels
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Solution Overview
Problem
Radial compressors in turbomachines face inefficiencies due to the need for extensive installation space and the inefficiencies associated with immediate axial deflection of gas flow, which leads to losses in efficiency and increased radial installation space.
Innovation Solution
A diffuser design with bent diffuser channels that transition from a radial to an axial area, utilizing v-shaped blades and intermediate blades to guide gas flow in a radially oblique and then axial direction, allowing for a longer gas flow path without increasing radial installation space, with adjustable angles and cross-sectional areas to optimize efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the diffuser channels are bent in the circumferential direction to guide gas through radial and axial areas, then the radial installation space is reduced, but the manufacturing complexity increases
Solution Approach 1:
The diffuser channels are bent in the circumferential direction to form curved paths that transition from radial to axial flow directions. This curvature allows the gas to follow a longer flow path within a smaller radial space, effectively reducing the installation footprint while maintaining efficient diffusion performance
Solution Approach 2:
The diffuser design transitions the flow path from a primarily radial configuration to a three-dimensional path that combines radial, circumferential, and axial components. By utilizing the circumferential dimension through bent channels, the design achieves more efficient space utilization without compromising the diffusion function
2Productivity
If the diffuser channels are made longer to improve efficiency, then the gas flow efficiency increases, but the radial installation space increases
Solution Approach 1:
By bending the diffuser channels in the circumferential direction, the design creates a longer effective flow path within a compact radial footprint. The curved geometry allows the gas to traverse a longer distance for efficient diffusion without requiring proportionally more radial space
Solution Approach 2:
The design extends the flow path into the circumferential and axial dimensions rather than solely increasing radial length. This multi-dimensional approach allows for longer diffusion paths that improve efficiency while maintaining compact radial installation dimensions
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 design enhances efficiency by maintaining a constant diffuser channel length while reducing radial installation space, allowing for targeted gas guidance and pressure increase, thereby improving the overall performance of radial compressors and turbomachines.
Implementation Method 1
a diffuser (1) having a plurality of diffuser channels (10) which guide the outflowing gas further in the radially outward direction and decelerate it
Implementation Method 2
the outflowing gas has a high absolute velocity, which is transformed inside the diffuser into static pressure by a deceleration of the flowing gas
Implementation Method 3
the diffuser channels extend across a radial area of the diffuser across a bent area into an axial area of the diffuser, wherein, in the radial area of the diffuser, the diffuser channels have diffuser walls
Data Source
AI summary
A diffuser for a radial compressor of a turbomachine is provided. The diffuser has a plurality of diffuser channels, wherein the diffuser channels extend across a radial area of the diffuser across a bent area into an axial area of the diffuser, wherein, in the radial area of the diffuser, the diffuser channels have diffuser walls in particular at v-shaped blades that are bent in the movement direction of the radial compressor or are straight.