Tyre Vulcanisation Chamber for Homogeneous Heating Around Wire Elements
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Solution Overview
Problem
Existing tire vulcanization chambers are inefficient in vulcanizing tires with wire-type load-bearing elements due to poor heat transfer and potential damage to the membrane and wire elements, leading to incomplete vulcanization.
Innovation Solution
A tire vulcanization chamber with a central circulation fan and specialized heat transfer fluid orientation means that divides the flow into two equal paths, using nitrogen, to ensure homogeneous heat distribution and avoid damage to wire elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a vulcanizing membrane is used to transfer heat to the tire, then heat transfer efficiency is improved, but the membrane and wire elements are damaged
Solution Approach 1:
The invention removes the vulcanizing membrane from the system entirely. Instead of using a membrane to transfer heat, the patent uses a circulation fan to directly circulate heated nitrogen gas through the tire cavity, allowing heat transfer without physical contact that could damage wire elements.
Solution Approach 2:
The invention uses nitrogen gas as a heat transfer fluid circulated by a fan. The pneumatic circulation of heated gas replaces the mechanical membrane contact method, enabling heat transfer while avoiding damage to delicate wire elements inside the tire.
2Productivity
If heat transfer fluid flows directly through the tire cavity, then vulcanization speed is improved, but heat distribution homogeneity deteriorates
Solution Approach 1:
The invention divides the single heat transfer fluid flow into multiple streams using deflectors. The flow is segmented into several directions that collectively cover the entire tire cavity, ensuring both rapid heat transfer and homogeneous distribution to all areas including those obscured by wire elements.
Solution Approach 2:
The deflectors redirect the heat transfer fluid flow from a single linear path into multiple spatial dimensions. By deflecting flow at specific angles and creating multi-directional circulation patterns, the system achieves comprehensive coverage of the tire cavity while maintaining high flow velocity for rapid vulcanization.
3Strength
If wire support elements are added to the tire cavity, then tire structural strength is improved, but heat transfer efficiency deteriorates
Solution Approach 1:
The invention uses circulating nitrogen gas to penetrate through and around the wire support elements. The gaseous heat transfer fluid can flow through the complex three-dimensional structure of wire elements more effectively than solid contact methods, maintaining heat transfer efficiency while preserving the structural strength provided by the wires.
Solution Approach 2:
The invention changes the physical state and flow parameters of the heat transfer medium by using circulated nitrogen gas at controlled velocities. This allows the heat transfer fluid to navigate around wire elements efficiently, penetrating into obscured areas and maintaining effective heat transfer despite the presence of structural wire support elements.
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
Achieves rapid and homogeneous vulcanization of tires with wire elements without increased energy consumption, maintaining quality and avoiding damage to the wire structure.
Implementation Method 1
a fan for circulating a heat transfer fluid
Implementation Method 2
the heat from the heat transfer fluid into contact with the entire internal surface of the tire
Implementation Method 3
a fan for circulating a heat transfer fluid
Implementation Method 4
at least one heating means
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a vulcanisation chamber for a tyre comprising wire-based supporting elements arranged in the inner cavity, which chamber is delimited by an upper manoeuvring plate and a lower plate, the two beads of which tyre are attached to the circumference of said plates, the interior of the chamber having a vertical axis XX' and horizontal axis YY' passing through the centre, and comprising at least one heating means, a fan for circulating a heat-transfer fluid, and a means for orienting the flow of the heat-transfer fluid.