Magnetic Exhaust Nozzle Venting for Connector Cooling
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Solution Overview
Problem
Magnetic connectors in exhaust extraction systems for emergency vehicles are prone to damage due to high exhaust gas temperatures, which also affects the flexible hose arrangement, necessitating improved cooling solutions to prolong their lifespan.
Innovation Solution
A nozzle design with magnets positioned at the inlet end and air vents at the outlet end, where ambient air is drawn in by the exhaust extraction system's suction, passes through the magnets before mixing with exhaust gases, effectively cooling them and extending the lifespan of both the magnets and the hose.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnets are used for magnetic coupling in exhaust extraction systems, then quick release and ease of operation are improved, but the magnets are damaged over time due to high exhaust gas temperatures
Solution Approach 1:
The system is divided into a hot side component (adaptor near exhaust) and a cold side component (nozzle with magnets), connected by a thermally insulating flexible hose. This segmentation isolates the magnets from thermal damage while maintaining functional connection.
Solution Approach 2:
A flexible thermally insulating hose acts as an intermediary between the hot exhaust adaptor and the cold nozzle containing magnets. This intermediary protects the magnets from thermal exposure while allowing magnetic coupling to function.
2Device complexity
If no cooling措施 is provided, then the device complexity is reduced, but the temperature of exhaust gases and magnets remains high causing damage
Solution Approach 1:
The flexible hose with thermal insulation properties serves dual functions: it connects the exhaust system to the nozzle while simultaneously providing thermal protection. The system uses its own structural components for cooling rather than adding separate active cooling devices.
Solution Approach 2:
The flexible hose is made with thermally insulating material composition that provides both mechanical flexibility and thermal protection. This composite material approach reduces temperature transmission to magnets without requiring additional cooling mechanisms.
3Adaptability or versatility
If the nozzle is designed for direct engagement with tail pipe, then adaptability is improved, but manufacturing precision and alignment requirements increase
Solution Approach 1:
The flexible hose provides dynamic adaptability in the connection between adaptor and nozzle, allowing for misalignments and position adjustments. This dynamic element compensates for manufacturing tolerances while enabling direct tail pipe engagement.
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 design prolongs the life of the magnetic coupling and flexible hose by efficiently cooling the magnets and reducing the exhaust gas temperature, ensuring a longer operational life for the connector system.
Implementation Method 1
The suction source is configured to create a suction force that draws a flow of ambient air through the one or more magnets and into the throughgoing channel
Implementation Method 2
ambient air is drawn from a cooler place than if the air vents instead where to be arranged at the inlet end adjacent the tail pipe. By the design of the housing, the air flow changes its direction more or less 180 degrees during its passage through the housing
Implementation Method 3
The adaptor and a nozzle which are configured to engage each other by a magnetic coupling
Data Source
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AI summary
A connector system (1000) for an exhaust extraction system is provided. The system comprises an adaptor (100) with a magnetic target surface (111). Further the system comprises a nozzle (200) forming part of the exhaust extraction system. The nozzle is configured to be connected to the magnetic target surface (111) of the adaptor (100) by a magnetic coupling. The nozzle (200) comprises a housing (201) having an inlet end (202) and an outlet end (203), and a throughgoing channel (204) having an axial extension therebetween. The housing comprises one or more magnets (214) that are arranged at the inlet end (202). The magnets are configured to direct or indirect engage the magnetic target surface (111) in a condition when the nozzle (200) is connected to the adaptor (100). Further, the housing comprises one or more air vents (223) that are arranged at the outlet end (203) and which have an axial extension being radially displaced in view of the axial extension of the throughgoing channel (204). Also a nozzle as such is provided.