Multilayer Vehicle Temperature Control Tube for Barrier and Insulation
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Solution Overview
Problem
Existing motor vehicle temperature control tubes lack adequate barrier properties, thermal insulation, and mechanical resistance while being costly and resource-intensive to produce.
Innovation Solution
A multilayer motor vehicle temperature control tube with a layer structure of polyethylene or thermoplastic vulcanizate (TPV) outer and inner layers, a polypropylene intermediate layer, and adhesion promoting layers, optimized for a total thickness of 0.5 to 3.0 mm, allowing for efficient fluid temperature control with improved mechanical strength and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tubes are produced with satisfactory barrier properties and adequate thermal insulation, then barrier properties and thermal insulation are improved, but manufacturing effort and material expenditures increase
Solution Approach 1:
The tube is divided into multiple layers with distinct functions: an outer layer for mechanical protection, an intermediate layer for barrier properties against temperature control media, and an inner layer for thermal insulation. This segmentation allows each layer to be optimized independently, achieving satisfactory barrier and insulation properties without requiring excessive thickness throughout, thus reducing overall material expenditure and manufacturing complexity compared to a homogeneous tube design.
Solution Approach 2:
The tube employs a composite structure combining different materials in specific layers. The intermediate layer uses materials with excellent barrier properties against temperature control media, while the inner and outer layers provide structural integrity and thermal insulation. This composite approach achieves the required barrier and insulation performance with optimized material usage, reducing both manufacturing effort and material costs compared to using a single thick-material solution.
2Reliability
If tubes are produced with satisfactory barrier properties and adequate thermal insulation, then barrier properties and thermal insulation are improved, but material expenditures and costs increase
Solution Approach 1:
The tube is divided into multiple layers with distinct functions: an outer layer for mechanical protection, an intermediate layer for barrier properties against temperature control media, and an inner layer for thermal insulation. This segmentation allows each layer to be optimized independently, achieving satisfactory barrier and insulation properties without requiring excessive thickness throughout, thus reducing overall material expenditure and manufacturing complexity compared to a homogeneous tube design.
Solution Approach 2:
The tube employs a composite structure combining different materials in specific layers. The intermediate layer uses materials with excellent barrier properties against temperature control media, while the inner and outer layers provide structural integrity and thermal insulation. This composite approach achieves the required barrier and insulation performance with optimized material usage, reducing both manufacturing effort and material costs compared to using a single thick-material solution.
3Reliability
If multi-layer tubes are used to improve barrier properties and thermal insulation, then barrier properties and thermal insulation are improved, but mechanical resistance decreases
Solution Approach 1:
The tube is divided into multiple layers with distinct functions: an outer layer for mechanical protection, an intermediate layer for barrier properties against temperature control media, and an inner layer for thermal insulation. This segmentation allows each layer to be optimized independently, achieving satisfactory barrier and insulation properties without requiring excessive thickness throughout, thus reducing overall material expenditure and manufacturing complexity compared to a homogeneous tube design.
Solution Approach 2:
Each layer of the tube is designed with specific local properties tailored to its function: the outer layer uses materials and thickness optimized for mechanical strength and protection, the intermediate layer uses materials with excellent barrier properties against temperature control media, and the inner layer provides thermal insulation. This local optimization ensures that mechanical resistance is maintained in the outer layer while achieving the required barrier and insulation performance through the combined multi-layer structure, avoiding the strength loss that would occur if the entire tube wall were thickened uniformly.
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 multilayer tube achieves excellent barrier and thermal insulation properties, optimal mechanical strength, and cost-effective production, enabling efficient temperature control with reduced material usage and lower production costs compared to traditional tubes.
Implementation Method 1
the previously known tubes often leave something to be desired regarding their barrier properties with respect to the temperature control medium and/or regarding their thermal insulation
Implementation Method 2
An adhesion promoting layer is interposed between the outer layer and the intermediate layer as well as between the intermediate layer and the inner layer respectively
Data Source
AI summary
Multilayer motor vehicle temperature control tube for fluid temperature control media, with the tube having at least three layers. Going from the outside to the inside, the layer structure comprises an outer layer of polyethylene or of a thermoplastic vulcanizate (TPV), an intermediate layer of polypropylene (PP) and an inner layer of polyethylene or of a thermoplastic vulcanizate (TPV). The total layer thickness of the tube is 0.7 to 2.5 mm.