Modular Rail Vehicle Floor Heating for Fast Replacement
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Solution Overview
Problem
Existing heating devices in rail vehicles face challenges such as difficult replacement of damaged heating elements, moisture ingress, and inefficient heat transfer due to poor conductivity of adjacent materials, leading to temperature peaks and high energy consumption.
Innovation Solution
A modular heating device design featuring a sandwich structure with light metal edge profiles and a layered heating unit, allowing for easy replacement and improved thermal conductivity, along with a core layer of poorly conducting material to prevent thermal bridges, and an electrically operated heating foil with integrated electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If heating elements are glued to conventional floor panels, then the heating device can be integrated into the floor structure, but individual heating elements cannot be easily replaced and require extensive dismantling time
Solution Approach 1:
The heating device is divided into modular heating units that can be independently replaced. Each heating unit consists of a heating element mounted on a support structure with connecting elements, allowing individual units to be detached and replaced without affecting other units, thus enabling quick repair without extensive dismantling
2Ease of manufacture
If heating foils are used without tight sealing, then the heating device is simpler to manufacture, but penetrating moisture can damage the heating foils
Solution Approach 1:
A waterproof membrane is introduced as a thin film layer that seals the heating elements and electrical connections. This membrane provides effective moisture protection while maintaining a simple construction and not significantly increasing manufacturing complexity
3Use of energy by moving object
If materials adjoining the heating elements (wood, rubber, plastic) are used, then the floor structure provides good insulation and comfort, but these poor conductors of heat cause temperature peaks and unnecessarily high energy consumption
Solution Approach 1:
The support structure uses materials with different thermal conductivity properties in different locations. Areas directly beneath heating elements use materials with higher thermal conductivity to dissipate heat and prevent temperature peaks, while other areas maintain insulating properties for energy efficiency and comfort
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 efficient, cost-effective, and easy maintenance of heating units, reducing energy consumption and preventing moisture damage while maintaining a stable and compact design.
Implementation Method 1
the heating element is designed as an electrically operated heating foil (28)
Implementation Method 2
materials adjoining the heating elements, normally wood, rubber or plastic coverings, are poor conductors of heat. This results in temperature peaks in the area of the heating elements
Data Source
Figure 1~6
AI summary
The invention relates to a heating appliance (10) for railway vehicles, comprising at least one heating unit (25), forming a load-bearing sandwich structure (12) together with edge profiles (13 to 16) and a core layer (36). According to the invention, a plurality of heating units (25) and sandwich structures (12) each form modular construction components (11) and the construction components (11) can be positioned and fixed relative to each other in the railway vehicle by means of fastener elements (40).