Curved Sound Reducer Layout for Tight Corner Installation
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Solution Overview
Problem
Existing sound reducers require large axial installation space and are technically complex to install in corner areas of fluid line systems, particularly in motor vehicles, due to their straight tube design and additional connection requirements.
Innovation Solution
A curved main tube design with a resonator chamber that allows for efficient sound reduction while minimizing installation space, featuring a housing that encloses the corner area and windows positioned to prevent liquid accumulation, with connecting tubes integrated in a space-efficient manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a straight main tube design is used, then the sound reducer can be manufactured with simple structure, but it requires large axial installation space and is complex to install in corner areas
Solution Approach 1:
The main tube is designed with a curved configuration instead of a straight design, allowing the sound reducer to fit into corner areas of fluid line systems. The curvature enables the device to utilize available space more efficiently while maintaining the same sound reduction functionality, thereby reducing the axial installation space requirement.
Solution Approach 2:
The invention transitions from a one-dimensional straight tube arrangement to a two-dimensional curved layout within the housing. This dimensional change allows the main tube to navigate corner areas effectively, reducing the axial footprint while maintaining fluid flow path integrity.
2Ease of manufacture
If a straight main tube design is used, then manufacturing is simple, but installation in corner areas becomes technically complex
Solution Approach 1:
The curved main tube design is specifically optimized to fit standard corner configurations in fluid line systems. This curvature eliminates the need for additional sharply bent tube returns, simplifying the installation process while maintaining manufacturing feasibility through standard forming techniques.
3Reliability
If windows are positioned to enable liquid removal, then liquid accumulation is prevented, but sound reduction effectiveness must be maintained
Solution Approach 1:
The windows are positioned at specific locations on the curved main tube where liquid accumulation would naturally occur due to gravity and flow patterns. This localized placement ensures effective liquid removal from the resonator chamber while maintaining the overall sound reduction functionality of the Helmholtz resonator design.
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 curved design enables efficient sound reduction with minimal pressure loss and simplified installation, suitable for various fluid line system orientations without requiring additional space for a sharply bent tube return, maintaining effective sound attenuation regardless of mounting position.
Implementation Method 1
This results in a pressure gradient across the suction window, so that fluid accumulated at the narrow point between the main tube and the inner surface of the mantle is sucked into the main tube and out of the resonator chamber by the so-called Bernoulli effect.
Implementation Method 2
The sound reducer described in the above-mentioned application, like the sound reducer of the invention, essentially operates on the principle of a Helmholtz resonator.
Data Source
AI summary
A sound reducer (10) has a housing (14) with a housing wall bounding an interior space (141). The housing wall has a mantle (142) extending longitudinally along a housing axis. Two end walls (143) are transverse to the housing axis. A main tube (12) extends through the interior space (141) and has a first and second ends (121). Windows (22) are formed as tube wall openings within the interior space (141). The first end (121) of the main tube (12) is fixed at a first passage (18a) through the housing wall, and the second end (122) of the main tube (12) is fixed at a second passage (18b) through the housing wall. At least the second passage (18b) passes eccentrically through one of the end walls (143). The main tube (12) is curved in a main plane and the first passage (18a) passes through the mantle (142).