Compressor Bypass Valve with Dynamic Air Guide Surfaces
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Solution Overview
Problem
Existing bypass valve systems in engines cannot make defined adjustments to air flow through bypass channels, leading to inefficiencies and increased noise due to turbulence when openings are partially opened.
Innovation Solution
A closure element that can be successively moved into the bypass channel, coupled with an air guiding device featuring adjustable air guiding surfaces that align based on the position of the closure element, allowing for continuous adjustment of air flow and maximizing laminarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If valve rings or flaps are used to control bypass channel openings, then the bypass channel can be opened or closed, but the airflow becomes too turbulent in intermediate positions leading to loss of efficiency and increased noise
Solution Approach 1:
The patent applies the dynamics principle by making the air guide surfaces movable rather than fixed. The air guide surfaces are coupled to the closing element such that their spatial orientation automatically adjusts depending on the position of the closing element. This dynamic adaptation ensures that at every position of the closing element, the airflow is guided smoothly, preventing turbulence and maintaining efficiency throughout the entire range of motion, not just at fully open or fully closed positions.
2Ease of operation
If valve rings or flaps are used to control bypass channel openings, then the bypass channel can be opened or closed, but noise increases due to turbulence in intermediate positions
Solution Approach 1:
The patent applies the dynamics principle by making the air guide surfaces movable rather than fixed. The air guide surfaces are coupled to the closing element such that their spatial orientation automatically adjusts depending on the position of the closing element. This dynamic adaptation ensures that at every position of the closing element, the airflow is guided smoothly, preventing turbulence and maintaining efficiency throughout the entire range of motion, not just at fully open or fully closed positions.
3Device complexity
If fixed air guide surfaces are used in the bypass channel, then the structure is simple, but turbulence occurs behind the closing element reducing flow laminarity
Solution Approach 1:
The patent applies the dynamics principle by making the air guide surfaces movable rather than fixed. The air guide surfaces are coupled to the closing element such that their spatial orientation automatically adjusts depending on the position of the closing element. This dynamic adaptation ensures that at every position of the closing element, the airflow is guided smoothly, preventing turbulence and maintaining efficiency throughout the entire range of motion, not just at fully open or fully closed positions.
Solution Approach 2:
The patent applies the intermediary principle by introducing air guide surfaces as a mediating element between the closing element and the downstream airflow. These air guide surfaces act as an intermediary that shapes and directs the airflow, preventing direct turbulent interaction between the closing element and the downstream flow. By positioning and orienting these intermediate surfaces appropriately, the patent maintains flow laminarity while still achieving effective bypass channel control.
4Productivity
If the closing element is moved into intermediate positions in the bypass channel, then airflow can be adjusted, but turbulence increases significantly
Solution Approach 1:
The patent applies the dynamics principle by making the air guide surfaces movable rather than fixed. The air guide surfaces are coupled to the closing element such that their spatial orientation automatically adjusts depending on the position of the closing element. This dynamic adaptation ensures that at every position of the closing element, the airflow is guided smoothly, preventing turbulence and maintaining efficiency throughout the entire range of motion, not just at fully open or fully closed positions.
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
Enables precise control of air flow through the bypass channel, reducing turbulence and enhancing compressor efficiency by maintaining high laminarity across all positions of the closure element, thereby optimizing mass flow and reducing noise.
Implementation Method 1
the flow continues with high laminarity even behind the closing element in the bypass channel
Implementation Method 2
turbulence of the gas flow behind the closing element is prevented or reduced
Data Source
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AI summary
The invention relates to a device and a method for venting compressor air in an engine. The device comprises at least one actuator (11) and at least one closing element (12) coupled to the actuator (11) for closing or partially closing a bypass channel (7) through which compressor air can be vented. The closing element (12) is designed to be successively moved into the bypass channel (7), and the airflow through the bypass channel (7) is adjustable by the position of the closing element. Furthermore, an air guide device (13, 16) coupled to the closing element (12) is provided, which has air guide surfaces (131) that connect downstream to the closing element (12), the spatial orientation of the air guide surfaces (131) depending on the position of the closing element (12).