Mixer assembly with surrounding filter element, stowage space with mixer assembly, vehicle with a stowage space and method for installing a mixer assembly
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Solution Overview
Problem
Conventional aircraft mixing systems require separate intake lines and additional insulating and soundproofing elements, making them bulky and complex, and the installation of mixer assemblies is time-consuming due to the need for space within the aircraft.
Innovation Solution
A compact mixer assembly design featuring a mixing chamber surrounded by a shroud with an intermediate space fluidically connected to the mixing chamber via a filter element, which also serves as thermal insulation and soundproofing, eliminating the need for separate intake lines and additional insulation, and allowing for quick installation by prefabricating the assembly outside the aircraft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate intake lines and additional insulating elements are used in conventional mixing chambers, then thermal insulation is achieved, but the device complexity and size increase
Solution Approach 1:
The patent combines the shroud structure with thermal insulation function by positioning the shroud to surround the mixing chamber, creating an intermediate space that provides both structural support and thermal insulation. This merging of structural and insulating functions eliminates the need for separate insulating elements, reducing device complexity while maintaining thermal insulation performance.
2Reliability
If separate intake lines with filter elements are arranged at the mixing chamber, then recirculation air is extracted uniformly from both sides, but the device complexity and space requirements increase
Solution Approach 1:
The shroud serves multiple functions: it provides structural support, enables uniform air extraction from both sides of the mixing chamber through its geometry, and works with the filter element to clean recirculation air. This multi-functionality consolidates what would otherwise require separate components, reducing device complexity while maintaining reliable uniform air extraction.
Solution Approach 2:
The filter element is positioned within or on the shroud structure, with the shroud surrounding the mixing chamber. This nested arrangement integrates the filtration function into the existing structural framework, eliminating the need for separate intake lines and reducing overall device complexity while ensuring uniform air extraction.
3Volume of moving object
If a compact mixer assembly design is used, then the size is reduced, but the installation process becomes more complex
Solution Approach 1:
The shroud and filter element are pre-assembled in a nested configuration around the mixing chamber before installation in the aircraft. This preliminary assembly creates a compact integrated unit that simplifies the installation process, as the entire assembly can be installed as one unit rather than requiring complex on-site assembly of multiple separate components.
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 compact design reduces the size and complexity of the mixer assembly, provides effective thermal and sound insulation, and simplifies the installation process by eliminating the need for separate intake lines and additional insulation, while allowing for easy filter element replacement and quick installation in aircraft.
Implementation Method 1
the intermediate space between the mixing chamber wall and the shroud assumes the function of a thermal insulation of the mixing chamber
Implementation Method 2
a filter element, which fluidically connects the intermediate space to a surrounding area of the mixer assembly
Data Source
AI summary
A mixer assembly for mixing two air streams in a ventilation system. The mixer assembly comprises a mixing chamber, which comprises an inlet and an outlet and a mixing chamber wall delimiting the mixing chamber, and also a shroud, which surrounds the mixing chamber wall, at least in certain portions. The shroud forms and delimits an intermediate space between the mixing chamber wall and the shroud. The mixer assembly also comprises a filter element, which fluidically connects the intermediate space to a surrounding area of the mixer assembly, the intermediate space being fluidically connected to the mixing chamber. Fluid can thus flow through the filter element into the intermediate space and further into the mixing chamber. A stowage space with a mixer assembly, an aircraft with such a stowage space and a method for producing a mixer assembly in an aircraft are also described.